Companies starting with Q

53,593 records.

• Quantum Blue Waves LtdActive, Dormant Company, London, United Kingdom
• Quantum BMG LtdActive, Management consultancy activities other than financial management, Birmingham, United Kingdom
• Quantum Books LimitedActive, Dormant Company, London, United Kingdom
• Quantum Boomerang SLActive, Valencia, Spain
• Quantum Boost LtdActive, Business and domestic software development, London, United Kingdom
• Quantum BPO Private LimitedStruck off, Tamil Nadu, since 2007
• Quantum Brain Art LimitedActive, Other professional, scientific and technical activities n.e.c., Oxford, United Kingdom
• Quantum Brain Tutoring LtdActive, Educational support services, Camberley, United Kingdom
• Quantum Branch Studio LtdActive, Dormant Company, London, United Kingdom
• Quantum Brands LimitedActive, Retail sale via mail order houses or via Internet, Porth, United Kingdom
• Quantum Break LLCActive, Sheridan, United States
• Quantum Breakthrough StrategiesActive, Non-trading company, Alderley Edge, United Kingdom
• Quantum Breakthroughs LimitedActive, Other education n.e.c., Kent, United Kingdom
• Quantum Breweries Private LimitedActive, Uttar Pradesh, since 2025
• Quantum Brews LimitedActive, Unlicensed restaurants and cafes, Bristol, United Kingdom
• Quantum Brick LtdActive, Buying and selling of own real estate, London, United Kingdom
• Quantum Brickwork Services LimitedActive, Other construction installation, Whitley Bay, United Kingdom
• Quantum Bridge Capital LtdActive, Financial intermediation not elsewhere classified, Bromley, United Kingdom
• Quantum Bridge Digital LimitedActive (proposal to strike off), Other business support service activities n.e.c., London, United Kingdom
• Quantum Bridge LimitedActive (proposal to strike off), Management consultancy activities other than financial management, Warrington, United K
• Quantum Bridge LLPActive, since 2026
• Quantum Bridge OÜActive, Rae Vald, Estonia
• Quantum Bridge Pty LtdActive, Melbourne, Australia
• Quantum Bridge, Corp.Active, Panama City, Panama
• Quantum Bridles LtdActive, Retail sale via stalls and markets of other goods, London, United Kingdom
• Quantum Brit LtdActive, Other software publishing, London, United Kingdom
• Quantum Broadband Private LimitedActive, Bihar, since 2020
• Quantum Brokers LimitedActive, Non-life insurance, London, United Kingdom
• Quantum BSOBangalore
• Quantum Bso and Tech Private LimitedActive, Bangalore, since 2003
• Quantum Build Dynamics LLPActive, since 2024
• Quantum Build LimitedActive, Other building completion and finishing, East Grinstead, United Kingdom
• Quantum Build Services LtdActive, Development of building projects, Sutton, United Kingdom
• Quantum Build Solutions LtdActive, Development of building projects, London, United Kingdom
• Quantum Build-Tech LimitedActive, Telangana, since 1998
• Quantum Buildcon Private LimitedActive, Bihar, since 2011
• Quantum Builders 1 LtdActive, Other specialised construction activities n.e.c., Paisley, United Kingdom
• Quantum Builders Glasgow LtdActive (proposal to strike off), Construction of commercial buildings, Glasgow, United Kingdom
• Quantum Builders LimitedActive, Other building completion and finishing, East Grinstead, United Kingdom
• Quantum Builders LLPActive, since 2025
• Quantum Building LtdActive, Construction of commercial buildings, Rayleigh, United Kingdom
• Quantum Building Services (UK) LimitedActive, Other building completion and finishing, Swanley Village, United Kingdom
• Quantum Building Works LimitedActive, Development of building projects, Preston, United Kingdom
• Quantum Buildup LtdActive, Development of building projects, Atherstone, United Kingdom
• Quantum Buildwell Private LimitedActive, Delhi, since 2007
• Quantum Business Advisory (UK) LimitedActive, Information technology consultancy activities, Chertsey, United Kingdom
• Quantum Business Advisory Private LimitedActive, West Bengal, since 2009
• Quantum Business Advisory Services LtdActive, Other professional, scientific and technical activities n.e.c., London, United Kingdom
• Quantum Business Analysts LtdActive, Other professional, scientific and technical activities n.e.c., Stoke-On-Trent, United Kingdom
• Quantum Business Consultancy LimitedActive, Management consultancy activities other than financial management, Newport, United Kingdom
• Quantum Business Consulting Private LimitedActive, West Bengal, since 1998
• Quantum Business Dynamics LimitedActive, Management consultancy activities other than financial management, Hove, United Kingdom
• Quantum Business Finance LimitedActive, Financial intermediation not elsewhere classified, Manchester, United Kingdom
• Quantum Business Generation LimitedActive, Other professional, scientific and technical activities n.e.c., London, United Kingdom
• Quantum Business GlobalActive, Web portals, Cardiff, United Kingdom
• Quantum Business LimitedActive, Development of building projects, Crawley, United Kingdom
• Quantum Business Management Private LimitedActive, West Bengal, since 2009
• Quantum Business Multiservices Private LimitedActive, Uttar Pradesh, since 2021
• Quantum Business Park Management Company LimitedActive, Residents property management, Hadleigh, United Kingdom
• Quantum Business Services (UK) LimitedActive, Accounting and auditing activities, Brigg, United Kingdom
• Quantum Business Solutions LimitedActive, Trade of electricity, Glasgow, United Kingdom
• Quantum Buzz LimitedActive, Information technology consultancy activities, London, United Kingdom
• Quantum Byt LtdActive, Business and domestic software development, Bury St. Edmunds, United Kingdom
• Quantum Byte Consulting Private LimitedActive, Telangana, since 2025
• Quantum Byte Data Service LLPActive, since 2024
• Quantum Byte Plus LtdActive (proposal to strike off), Information technology consultancy activities, London, United Kingdom
• Quantum Byte Tech LtdActive, Non-specialised wholesale trade, Birmingham, United Kingdom
• Quantum Byte Technologies LimitedActive, Information technology consultancy activities, London, United Kingdom
• Quantum Bytez LtdActive, Wholesale of computers, computer peripheral equipment and software, West Drayton, United Kingdom
• Quantum Cabling Services LimitedActive, Other service activities n.e.c., Manchester, United Kingdom
• Quantum Cafe LtdActive, Unlicensed restaurants and cafes, Cardiff, United Kingdom
• Quantum Calibration Services LLPActive, since 2026
• Quantum Canary LimitedActive, Other research and experimental development on natural sciences and engineering, Poole, United Kingdom
• Quantum Cancer Centres LtdActive (proposal to strike off), Specialists medical practice activities, London, United Kingdom
• Quantum Canvas LtdActive, Artistic creation, London, United Kingdom
• Quantum CapitalActive, Kolhapur, India
• Quantum Capital and Ventures LLPActive, Karnataka
• Quantum Capital Associates LimitedActive, Auckland, New Zealand
• Quantum Capital Fund LtdStruck off, West Bengal, since 1994
• Quantum Capital FundsActive, Luxembourg, Luxembourg
• Quantum Capital Funds LtdActive, Activities of investment trusts, London, United Kingdom
• Quantum Capital Global IncActive, Tortola, United Kingdom
• Quantum Capital Global Investments LPActive, Lewes, United States
• Quantum Capital GmbHActive, Düsseldorf, Germany
• Quantum Capital GmbHActive, Berlin, Germany
• Quantum Capital Grouppetroleum industry, Houston, United States
• Quantum Capital Group LtdActive, Information technology consultancy activities, London, United Kingdom
• Quantum Capital Holdings LtdActive, Buying and selling of own real estate, Gravesend, United Kingdom
• Quantum Capital International Group LTD.Active, Belize City, Belize
• Quantum Capital Investments LtdActive, Buying and selling of own real estate, London, United Kingdom
• Quantum Capital Investors LimitedActive (proposal to strike off), Financial intermediation not elsewhere classified, London, United Kingdom
• Quantum Capital LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
• Quantum Capital London LtdLiquidation, Other education n.e.c., Hollinwood, United Kingdom
• Quantum Capital LtdActive, Astana, Kazakhstan
• Quantum Capital Management (Jersey) LimitedActive, St. Helier, Jersey
• Quantum Capital Management IncActive, Road Town, British Virgin Islands
• Quantum Capital Management LimitedActive, Financial intermediation not elsewhere classified, London, United Kingdom
• Quantum Capital Management SLActive, Madrid, Spain
• Quantum Capital Management, LLCActive, Northfield, United States
• Quantum Capital Markets LtdActive, Rishon Lezion, Israel
• Quantum Capital Opportunities VCCActive, Singapore, Singapore
• Quantum Capital OyActive, Espoo, Finland
• Quantum Capital Partners LimitedActive, Management consultancy activities other than financial management, Southend-On-Sea, United Kingdom
• Quantum Capital Solutions LtdActive, Wholesale of household goods (other than musical instruments) n.e.c., Ipswich, United Kingdom
• Quantum Capital SPV LtdActive, Abu Dhabi, United Arab Emirates
• Quantum Capital Ventures Group LtdActive, Fund management activities, London, United Kingdom
• Quantum Capital Ventures LtdActive, Other letting and operating of own or leased real estate, Middlesex, United Kingdom
• Quantum Capital, S.L.Active, Madrid, Spain
• Quantum Car Management LimitedActive, Sale of used cars and light motor vehicles, Knutsford, United Kingdom
• Quantum Car Sales LtdActive, Sale of used cars and light motor vehicles, Birmingham, United Kingdom
• Quantum Card Services LtdActive, Business and domestic software development, Bournemouth, United Kingdom
• Quantum Cards LtdActive, Other retail sale in non-specialised stores, Southall, United Kingdom
• Quantum Cards TCG LtdActive, Other retail sale in non-specialised stores, Battle, United Kingdom
• Quantum Care & Support LtdActive, Residential care activities for learning difficulties, mental health and substance abuse, Hyde, United Kingdom
• Quantum Care (Developments) LimitedActive, Other business support service activities n.e.c., Welwyn Garden City, United Kingdom
• Quantum Care Group LtdActive, Other business support service activities n.e.c., Dundee, United Kingdom
• Quantum Care LimitedActive, United Kingdom
• Quantum Care Properties LtdActive, Other letting and operating of own or leased real estate, Forfar, United Kingdom
• Quantum Care Pvt LtdActive (proposal to strike off), Other human health activities, Walsall, United Kingdom
• Quantum Care Quality Consultancy LtdActive (proposal to strike off), Management consultancy activities other than financial management, Maidstone, United Ki
• Quantum Care Services LimitedLiquidation, Other social work activities without accommodation n.e.c., Southend-On-Sea, United Kingdom
• Quantum Care Solutions India Private LimitedActive, Telangana, since 2026
• Quantum Careers Tech Private LimitedActive, Maharashtra, since 2017
• Quantum Cargo Dynamics LtdActive, Sale of other motor vehicles, Feltham, United Kingdom
• Quantum Cargo Logistics LtdActive, Freight transport by road, Luton, United Kingdom
• Quantum Cargo Network LtdActive, Sale of other motor vehicles, Feltham, United Kingdom
• Quantum Cargo Service UK LimitedActive, Other transportation support activities, Manchester, United Kingdom
• Quantum Carpentry LtdLiquidation, Manufacture of other builders' carpentry and joinery, Swansea, United Kingdom
• Quantum Cars LimitedActive, Sale of used cars and light motor vehicles, Romford, United Kingdom
• Quantum Cart LtdActive, Retail sale via mail order houses or via Internet, London, United Kingdom
• Quantum Cat Imaging LimitedActive, Other human health activities, Woolwich, United Kingdom
• Quantum Cat LtdActive, Publishing of computer games, London, United Kingdom
• Quantum Catering Services LtdActive, Event catering activities, Southall, United Kingdom
• Quantum Catnip LtdActive, Motion picture, video and television programme post-production activities, Edinburgh, United Kingdom
• Quantum CCS LimitedActive, Other business support service activities n.e.c., Leeds, United Kingdom
• Quantum CCTV & Networks LimitedActive, Private security activities, Honiton, United Kingdom
• Quantum Celestials LimitedActive (proposal to strike off), Retail sale of mobile telephones, Cardiff, United Kingdom
• Quantum Cellar Technologies LLPActive, Andhra Pradesh
• Quantum Cellpath LimitedActive, Specialists medical practice activities, Borehamwood, United Kingdom
• Quantum Centre for Minds and MachinesActive, United Kingdom
• Quantum Centre of Health and Wellbeing CicActive, Other human health activities, Bootle, United Kingdom
• Quantum Centric Solutions LLPActive, Telangana, since 2026
• Quantum Ceramics LtdActive (proposal to strike off), Other construction installation, Warrington, United Kingdom
• Quantum Cerebra LimitedActive, Business and domestic software development, Ha2 8Px, United Kingdom
• Quantum CH LimitedInactive, Bishop Middleham, United Kingdom
• Quantum Change Consulting LtdActive, Other service activities n.e.c., Croydon, United Kingdom
• Quantum Charge Holdings LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
• Quantum Chase LtdActive (proposal to strike off), Human resources provision and management of human resources functions, London, United K
• Quantum Check Tech LtdActive, Business and domestic software development, Glasgow, United Kingdom
• Quantum ChemicalsActive, Delhi, India
• Quantum Chemicals LimitedActive, Manufacture of essential oils, Wolverhampton, United Kingdom
• Quantum Chemie LimitedActive, Manufacture of other inorganic basic chemicals, Southampton, United Kingdom
• Quantum Chemistry Program ExchangeDissolved
• Quantum Chimney Services LtdActive, Other service activities n.e.c., Swanage, United Kingdom
• Quantum Chiropractic LtdActive, Specialists medical practice activities, Poole, United Kingdom
• Quantum Cipher Private LimitedActive, Delhi, since 2020
• Quantum Circuit Technologies LtdActive, Engineering related scientific and technical consulting activities, London, United Kingdom
• Quantum City Parking Netherlands IIActive, Hamburg, Germany
• Quantum Civil Engineering LimitedActive, Construction of other civil engineering projects n.e.c., Bournemouth, United Kingdom
• Quantum Claims Compensation Specialists LimitedActive, Other service activities n.e.c., Aberdeen, United Kingdom
• Quantum Claims Group LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
• Quantum Clave LtdActive, Other information technology service activities, Liverpool, United Kingdom
• Quantum Clean Solutions (OPC) Private LimitedActive, Andhra Pradesh, since 2026
• Quantum Cleaning and Specialist Services LimitedActive, Window cleaning services, Basingstoke, United Kingdom
• Quantum Cleaning and Support Services LimitedActive, Dormant Company, Hartley Wintney, United Kingdom
• Quantum Cleaning Solutions LtdActive, General cleaning of buildings, Cookstown, United Kingdom
• Quantum Clear Global LimitedActive, Other business support service activities n.e.c., London, United Kingdom
• Quantum Clear LimitedActive, Other service activities n.e.c., Egham, United Kingdom
• Quantum Clearing and Forwarding Private LimitedStruck off, Maharashtra, since 2001
• Quantum Clinic LimitedActive, Specialists medical practice activities, Lewes, United Kingdom
• Quantum Clinical Research CicActive, Other research and experimental development on natural sciences and engineering, Lewes, United Kingdom
• Quantum Close LtdActive (proposal to strike off), Advertising agencies, Gillingham, United Kingdom
• Quantum Closing LtdActive (proposal to strike off), Management consultancy activities other than financial management, Cardiff, United King
• Quantum Clothing Group LimitedActive, Manufacture of other men's outerwear, Nottingham, United Kingdom
• Quantum Clothing India Private LimitedActive, Andhra Pradesh, since 2007
• Quantum Cloud 360 Tech Consultingsolutions (OPC) Private LimitedActive, Delhi, since 2020
• Quantum Cloud AI LtdActive, Business and domestic software development, London, United Kingdom
• Quantum Cloud LtdActive, Other software publishing, Crewe, United Kingdom
• Quantum Cloudx Technologies Private LimitedActive, Andhra Pradesh, since 2026
• Quantum Clovera InvestamaIndonesia
• Quantum Club I GmbH & Co. KGActive, Grünwald, Germany
• Quantum CMS 786 LimitedActive, Management consultancy activities other than financial management, High Wycombe, United Kingdom
• Quantum CMS FND CicActive, Information technology consultancy activities, High Wycombe, United Kingdom
• Quantum Co-Operation LtdActive, Non-specialised wholesale trade, Blackburn, United Kingdom
• Quantum Coaching and Consultancy Ltd.Active, Public relations and communications activities, Kilmarnock, United Kingdom
• Quantum Coal Energy Private LimitedUnder liquidation, Tamil Nadu, since 2010
• Quantum Coating Private LimitedStruck off, Maharashtra, since 2005
• Quantum Coatings LtdActive, Painting, Hornchurch, United Kingdom
• Quantum Code Labs Private LimitedActive, Telangana, since 2025
• Quantum Code LimitedActive (proposal to strike off), Information technology consultancy activities, Wrexham, United Kingdom
• Quantum Code Technologies LtdActive, Business and domestic software development, Bishop'S Stortford, United Kingdom
• Quantum Codecrafters LtdActive, Business and domestic software development, Dagenham, United Kingdom
• Quantum Coders LimitedActive, Delhi, since 2000
• Quantum Codex Consulting Services Private LimitedActive, Telangana, since 2025
• Quantum Codon Private LimitedActive, Andhra Pradesh, since 2026
• Quantum Coffee Roasters LtdActive, Production of coffee and coffee substitutes, Cardiff, United Kingdom
• Quantum Cognition LtdActive, Translation and interpretation activities, London, United Kingdom
• Quantum Coherence LtdActive, Retail sale of carpets, rugs, wall and floor coverings in specialised stores, London, United Kingdom
• Quantum Coherence Technologies Private LimitedActive, Karnataka, since 2023
• Quantum Colleagues Training Community Interest CompanyActive, Other education n.e.c., Northampton, United Kingdom
• Quantum Collection Holdings LimitedActive, Road Town, United Kingdom
• Quantum Collection LtdActive, Management consultancy activities other than financial management, Londres, United Kingdom
• Quantum Colonizers Private LimitedActive, Delhi, since 2007
• Quantum Commander Consulting LimitedActive, Retail sale of watches and jewellery in specialised stores, 1 Waverley Lane, United Kingdom
• Quantum Commerce Holdings LtdActive, Advertising agencies, London, United Kingdom
• Quantum Commerce Private LimitedStruck off, Delhi, since 1996
• Quantum Commercial and Contract Consultants LimitedActive, Other specialised construction activities n.e.c., Accrington, United Kingdom
• Quantum Commercial Cleaning LimitedActive, General cleaning of buildings, Stamford, United Kingdom
• Quantum Commercial LtdActive (proposal to strike off), Management consultancy activities other than financial management, Cardiff, United King
• Quantum Commercial Management (Scotland) LimitedActive, Quantity surveying activities, Bonnyrigg, United Kingdom
• Quantum Commercial Management LimitedActive (proposal to strike off), Management consultancy activities other than financial management, Shrewsbury, United K
• Quantum Commercial Management Services LtdActive, Quantity surveying activities, Jarrow, United Kingdom
• Quantum Commercial Real s.r.o.Active, Jesenice, Czech Republic
• Quantum Commercial Services LimitedActive (proposal to strike off), Quantity surveying activities, Rotherham, United Kingdom
• Quantum Commercial Solutions LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
• Quantum Commodeal Private LimitedAmalgamated, West Bengal, since 2010
• Quantum Commodities Private LimitedStruck off, Puducherry, since 1998
• Quantum Commodity Advisors - DMCCActive, Dubai, United Arab Emirates
• Quantum Commodity Intelligence LimitedActive, Other publishing activities, London, United Kingdom
• Quantum Commotrade Private LimitedActive, West Bengal, since 2010
• Quantum Comms Group Holdings LtdActive, Activities of other holding companies n.e.c., Rugeley, United Kingdom
• Quantum Comms Group LtdActive, Wired telecommunications activities, Rugeley, United Kingdom
• Quantum Comms Pty LtdActive, Bylands, Australia
• Quantum Communications (Chennai) Private LimitedStruck off, Tamil Nadu, since 2005
• Quantum Communications Group LimitedActive, Public relations and communications activities, Edinburgh, United Kingdom
• Quantum Communications LimitedActive, Wireless telecommunications activities, Market Rasen, United Kingdom
• Quantum Communications Private LimitedActive, Delhi, since 2020
• Quantum Commute Private LimitedActive, Tamil Nadu, since 2025
• Quantum Compass LtdActive (proposal to strike off), Information technology consultancy activities, Ilkley, United Kingdom
• Quantum Competency Private LimitedActive, Gujarat, since 2024
• Quantum Competitions LtdActive (proposal to strike off), Dormant Company, Liverpool, United Kingdom
• Quantum Compliance LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
• Quantum Compounds LtdActive, Other research and experimental development on natural sciences and engineering, Westbury, United Kingdom
• Quantum Compute LtdActive, Ready-made interactive leisure and entertainment software development, London, United Kingdom
• Quantum Computech Private LimitedActive, Haryana, since 2006
• Quantum Computer Aided Design LimitedActive, Other research and experimental development on natural sciences and engineering, Port Talbot, United Kingdom
• Quantum Computer LimitedActive, Wholesale of computers, computer peripheral equipment and software, Bolton, United Kingdom
• Quantum Computer Services P LtdStruck off, Tamil Nadu, since 1991
• Quantum Computer Systems LimitedLiquidation, Bucks, United Kingdom
• Quantum Computer Technology Finland OyActive, Espoo, Finland
• Quantum Computing (Pitstone) LimitedActive, United Kingdom
• Quantum Computing 2x Daily ETFActive, Dover, United States
• Quantum Computing and Machine Learning UCITS ETFNull, Dublin, Ireland
• Quantum Computing ETFActive, Dover, United States
• Quantum Computing Inc.Active, Dover, United States
• Quantum Computing Inc.Listed, United States
• Quantum Computing Labs LimitedActive (proposal to strike off), Technical testing and analysis, Birmingham, United Kingdom
• Quantum Computing Labs LLCActive, Sheridan, United States
• Quantum Computing LtdActive, Information technology consultancy activities, Chichester, United Kingdom
• Quantum Computing Machines LtdActive, Retail sale of audio and video equipment in specialised stores, Ipswich, United Kingdom
• Quantum Comunicacion Integral SLActive, Rozas De Madrid, Las, Spain
• Quantum Concierge Services LimitedActive, Taxi operation, Bradford, United Kingdom
• Quantum Concrete LLPActive, Kolkata, since 2016
• Quantum Conductors LtdActive, Cold drawing of bars, Maidstone, United Kingdom
• Quantum Confectionary Private LimitedActive, Tamil Nadu, since 2003
• Quantum Connect LimitedActive, Other information technology service activities, Reading, United Kingdom
• Quantum Connect Marketing LtdActive (proposal to strike off), Information technology consultancy activities, London, United Kingdom
• Quantum Connect Services Private LimitedStruck off, West Bengal, since 2007
• Quantum Connected Ltd.Active, Wired telecommunications activities, Sandhurst, United Kingdom
• Quantum Connections LimitedActive, Management consultancy activities other than financial management, Warrington, United Kingdom
• Quantum Connections Private LimitedActive, West Bengal, since 2011
• Quantum Consciousness FoundationActive, Rajasthan, since 2018
• Quantum Construction & Maintenance Holdings LimitedActive, Activities of construction holding companies, Plymouth, United Kingdom
• Quantum Construction & Rail Services LtdActive, Construction of railways and underground railways, Rotherham, United Kingdom
• Quantum Construction (Southern) LtdActive, Development of building projects, Chippenham, United Kingdom
• Quantum Construction (Uk)limitedActive, Development of building projects, Doncaster, United Kingdom
• Quantum Construction Consultants LtdActive, Other specialised construction activities n.e.c., Bristol, United Kingdom
• Quantum Construction Consulting LimitedActive, Development of building projects, High Peak, United Kingdom
• Quantum Construction Group Holdings LimitedActive, Construction of commercial buildings, Wrexham, United Kingdom
• Quantum Construction Group LtdActive (proposal to strike off), Construction of domestic buildings, Hull, United Kingdom
• Quantum Construction India LLPActive, Maharashtra, since 2024
• Quantum Construction LimitedLiquidation, Other specialised construction activities n.e.c., Southampton, United Kingdom
• Quantum Construction LimitedActive, Limassol, Cyprus
• Quantum Constructions Private LimitedStruck off, Maharashtra, since 1996
• Quantum Consult GmbH & Co. KGActive, Kleve, Germany
• Quantum Consult Holdings LimitedActive, Activities of other holding companies n.e.c., Leeds, United Kingdom
• Quantum Consult LimitedActive, Management consultancy activities other than financial management, Leeds, United Kingdom
• Quantum Consultancy and Investigations LimitedActive, Management consultancy activities other than financial management, Ringwood, United Kingdom
• Quantum Consultancy Group LimitedActive, Other business support service activities n.e.c., Edinburgh, United Kingdom
• Quantum Consultancy LtdActive, Information technology consultancy activities, London, United Kingdom
• Quantum Consultancy Solutions LtdActive, Quantity surveying activities, Rayleigh, United Kingdom
• QUANTUM CONSULTANTS ApSActive, Bagsværd, Denmark
• Quantum Consultants IncActive, since 2002
• Quantum Consultants LimitedActive, Quantity surveying activities, Coalville, United Kingdom
• Quantum Consultants Private LimitedActive, Delhi, since 1993
• Quantum Consultation LtdActive, Management consultancy activities other than financial management, Chesham, United Kingdom
• Quantum Consulting Accountants LimitedActive, Financial management, Princes Risborough, United Kingdom
• Quantum Consulting Engineers LtdActive, Development of building projects, London, United Kingdom
• Quantum Consulting Europe LtdActive, Management consultancy activities other than financial management, London, United Kingdom
• Quantum Consulting Group LimitedActive, Management consultancy activities other than financial management, Little Gomersal, United Kingdom
• Quantum Consulting International LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
• Quantum Consulting LtdActive, Engineering related scientific and technical consulting activities, London, United Kingdom
• Quantum Consulting Services LtdActive, Information technology consultancy activities, London, United Kingdom
• Quantum Consultive LtdActive (proposal to strike off), Wireless telecommunications activities, London, United Kingdom
• Quantum Consumer Solutions Private LimitedActive, Maharashtra, since 1990
• Quantum Consumer Solutions Pvt. LtdActive, Management consultancy activities other than financial management, London, United Kingdom
• Quantum Contemporary Art LtdActive, Retail sale in commercial art galleries, London, United Kingdom
• Quantum Continental Global Services LimitedActive, Development of building projects, London, United Kingdom
• Quantum Contract Lighting LtdActive, Wholesale of furniture, carpets and lighting equipment, London, United Kingdom
• Quantum Contract Management LimitedActive, Management consultancy activities other than financial management, Darlington, United Kingdom
• Quantum Contract Solutions LtdActive, Construction of utility projects for electricity and telecommunications, Motherwell, United Kingdom
• Quantum Contractor & Engineers Private LimitedActive, Uttar Pradesh, since 2025
• Quantum Contractors LtdActive, Other building completion and finishing, Bexley, United Kingdom
• Quantum Contracts LimitedActive, Information technology consultancy activities, Manchester, United Kingdom
• Quantum Control Solutions LimitedActive, Development of building projects, Melton Mowbray, United Kingdom
• Quantum Controls & Automation Private LimitedStruck off, Tamil Nadu, since 2011
• Quantum Controls B.V.Active, Nuth, Kingdom of the Netherlands
• Quantum Controls LtdActive, Manufacture of other electrical equipment, Prudhoe, United Kingdom
• Quantum Contructions Executive Pension PlanActive, Bury, United Kingdom
• Quantum Cooling Dispense and Refridgeration Services LLPActive, Chichester, United Kingdom
• Quantum Cooling LimitedActive (proposal to strike off), Steam and air conditioning supply, Waterlooville, United Kingdom
• Quantum Cooling Technology Ltd.Active, Other business support service activities n.e.c., Chichester, United Kingdom
• Quantum Core Consultancy Services Private LimitedActive, Telangana, since 2017
• Quantum Core Consulting LimitedActive (proposal to strike off), Information technology consultancy activities, Cardiff, United Kingdom
• Quantum Core LimitedActive, Other letting and operating of own or leased real estate, Purley, United Kingdom
• Quantum Core LLPActive, Maharashtra, since 2025
• Quantum Core Technologies LtdActive, Agents specialized in the sale of other particular products, Sutton Coldfield, United Kingdom
• Quantum Core, Unipessoal LdaActive, Estoril, Portugal
• Quantum Coretech Engineering Private LimitedActive, Bihar, since 2026
• Quantum Corp /De/Listed, United States
• Quantum Corphealth Private LimitedActive, Maharashtra, since 2012
• Quantum Corporate Coaching LimitedActive, Management consultancy activities other than financial management, Oxford, United Kingdom
• Quantum Corporate Services LimitedLiquidation, Other business support service activities n.e.c., Northampton, United Kingdom
• Quantum Corporate Services Pvt LtdStruck off, West Bengal, since 1993
• Quantum CorporationActive
• Quantum CorporationActive, computer storage media, data storage medium, Wilmington, United States
• Quantum Corporation LtdLiquidation, Development of building projects, Wolverhampton, United Kingdom
• Quantum Cosmopolis Living IActive, Hamburg, Germany
• Quantum Cost and Construction Management LtdActive, Quantity surveying activities, Caerphilly, United Kingdom
• Quantum Cost Consult LimitedActive, Development of building projects, Lincoln, United Kingdom
• Quantum Cost Consulting LtdActive, Quantity surveying activities, Rochester, United Kingdom
• Quantum Cost LimitedActive, Quantity surveying activities, London, United Kingdom
• Quantum Cost Planning Pty LtdInactive, Subiaco, Australia
• Quantum Cove LimitedActive, Road Town, British Virgin Islands
• Quantum CPM LimitedActive, Other specialised construction activities n.e.c., Oldham, United Kingdom
• Quantum Craft LtdActive, Ready-made interactive leisure and entertainment software development, Epsom, United Kingdom
• Quantum Creations (OPC) Private LimitedActive, Delhi, since 2023
• Quantum Creations IncActive, Mumbai, India
• Quantum Creations LtdActive, Other construction installation, Walton On Thames, United Kingdom
• Quantum Creative LimitedActive, Support activities to performing arts, South Godstone, United Kingdom
• Quantum Creative Studio LtdActive, Other publishing activities, London, United Kingdom
• Quantum Creator LtdActive, Retail sale of books in specialised stores, Stoke-On-Trent, United Kingdom
• Quantum Credit Pvt LtdDissolved, West Bengal, since 1990
• Quantum Credit UnionActive, Wichita, United States
• Quantum Creo Technology LLPActive, Maharashtra, since 2016
• Quantum Crest Capital LLCActive, North Charleston, United States
• Quantum Crest Developments Group LimitedActive, Activities of other holding companies n.e.c., Ashford, United Kingdom
• Quantum Crest Ltd.Active, Agents involved in the sale of a variety of goods, London, United Kingdom
• Quantum Crest Support Network LtdActive, Dormant Company, Manchester, United Kingdom
• Quantum Crew Crest Private LimitedActive, Karnataka, since 2024
• Quantum Crew LtdActive, Activities of exhibition and fair organisers, Hove, United Kingdom
• Quantum CRM Specialist Private LimitedActive, Gujarat, since 2024
• Quantum Cro LimitedActive, Business and domestic software development, London, United Kingdom
• Quantum Cross Management Corp.Active, Road Town, British Virgin Islands
• Quantum Cryogenics LimitedActive, Activities of other holding companies n.e.c., Okehampton, United Kingdom
• Quantum Cryotherapy LtdActive, Other business support service activities n.e.c., Okehampton, United Kingdom
• Quantum Crypto Ltd.Active (proposal to strike off), Activities of financial services holding companies, Cardiff, United Kingdom
• Quantum Cryptographics LimitedActive, Information technology consultancy activities, London, United Kingdom
• Quantum Cryptonics LtdActive, Activities of open-ended investment companies, Slough, United Kingdom
• Quantum Crystal Technology LtdActive, Other service activities n.e.c., Boston, United Kingdom
• Quantum CTRM LtdActive, Information technology consultancy activities, Warwick, United Kingdom
• Quantum Cubed Energy LtdActive, Other retail sale not in stores, stalls or markets, Milton Keynes, United Kingdom
• Quantum Cultivation Private LimitedActive, West Bengal, since 2011
• Quantum Culture LtdActive, Information technology consultancy activities, Swindon, United Kingdom
• Quantum Cure Pharma Private LimitedActive, Punjab, since 2025
• Quantum Curis Limited Liability PartnershipActive, Uttar Pradesh
• Quantum Cut LtdActive, Video production activities, London, United Kingdom
• Quantum Cyber and Information Security Solutions LtdActive (proposal to strike off), Wholesale of computers, computer peripheral equipment and software, London, United King
• Quantum Cyber Innovation LtdActive, Information technology consultancy activities, London, United Kingdom
• Quantum Cyber N.V.Listed, United States
• Quantum Cyber Netics Private LimitedStruck off, Chandigarh, since 1999
• Quantum Cyber Security International LtdActive, Information technology consultancy activities, London, United Kingdom
• Quantum Cyber Security Training LimitedActive, Information technology consultancy activities, Edinburgh, United Kingdom
• Quantum Cyber Solutions LtdActive, Information technology consultancy activities, Leicester, United Kingdom
• Quantum Cybernetics LimitedActive, Dormant Company, London, United Kingdom
• Quantum Cybersecurity LtdActive, Business and domestic software development, Huddersfield, United Kingdom
• Quantum Cybersecurity Valley Private LimitedActive, Karnataka, since 2026
• Quantum Cybertech Private LimitedActive, Delhi, since 2026
• Quantum Cybervision Technologies LLPActive, since 2026
• QUANTUM CZ s.r.o.Active, Ostrava, Czech Republic
• Quantum D CThailand
• Quantum Darsena 2016 S.L.Active, Tarragona, Spain
• Quantum Data Analytics LimitedActive, Other business support service activities n.e.c., Steyning, United Kingdom
• Quantum Data and Security LimitedActive (proposal to strike off), Other information technology service activities, Middlesbrough, United Kingdom
• Quantum Data Energy PLCActive, Production of electricity, London, United Kingdom
• Quantum Data Engines Europe LimitedActive, Business and domestic software development, Carshalton, United Kingdom
• Quantum Data Engines India Private LimitedActive, Telangana, since 2011
• Quantum Data Investment SLActive, Madrid, Spain
• Quantum Data Labs LimitedActive, Business and domestic software development, Aylesbury, United Kingdom
• Quantum Data LtdActive (proposal to strike off), Business and domestic software development, Cardiff, United Kingdom
• Quantum Data Processor LtdActive, Information technology consultancy activities, Luton, United Kingdom
• Quantum Data Processors Private LimitedStruck off, West Bengal, since 2025
• Quantum Data Quest Private LimitedActive, Gujarat, since 2023
• Quantum Data Solutions Ltd.Active, Other information technology service activities, Peterhead, United Kingdom
• Quantum Data State LtdActive, Information technology consultancy activities, Blackpool, United Kingdom
• Quantum Dataflow LimitedActive, Data processing, hosting and related activities, Bolton, United Kingdom
• Quantum Datamatrix Private LimitedActive, Delhi, since 2005
• Quantum Dealcom Private LimitedStruck off, West Bengal, since 2007
• Quantum Dealers Private LimitedActive, West Bengal, since 2009
• Quantum Dealtrade Private LimitedActive, West Bengal, since 2010
• Quantum Debtco LimitedActive, Activities of other holding companies n.e.c., Nottingham, United Kingdom
• Quantum Decisions LtdActive, Information technology consultancy activities, Southam, United Kingdom
• Quantum Deck LtdActive (proposal to strike off), Retail sale via mail order houses or via Internet, Sheffield, United Kingdom
• Quantum Decor LtdActive, Plumbing, heat and air-conditioning installation, London, United Kingdom
• Quantum Decorating Services LtdActive, Plastering, Farnborough, United Kingdom
• Quantum Decoratives Private LimitedStruck off, Karnataka, since 2010
• Quantum Deeplogica Systems Private LimitedActive, Andhra Pradesh, since 2024
• Quantum Defence LtdActive, Information technology consultancy activities, Huntingdon, United Kingdom
• Quantum Defense Innovation LimitedActive, Other information technology service activities, Fitzrovia, United Kingdom
• Quantum Deliveries LtdActive, Other transportation support activities, Sheffield, United Kingdom
• Quantum Delta Holdings LtdActive, Activities of other holding companies n.e.c., Wolverhampton, United Kingdom
• Quantum Dent LtdActive, Dental practice activities, Enniskillen, United Kingdom
• Quantum Dental Laboratories LtdActive, Dental practice activities, Liverpool, United Kingdom
• Quantum Design & Build LtdLiquidation, Development of building projects, Croydon, United Kingdom
• Quantum Design GmbHActive, Pfungstadt, Germany
• Quantum Design India Private LimitedActive, Delhi, since 2008
• Quantum Design India Private LimitedActive, Maharashtra, since 2008
• Quantum Design International, Inc.Active, Sacramento, United States
• Quantum Design LimitedActive, specialised design activities, Shefford, United Kingdom
• Quantum Design Projects LimitedActive (proposal to strike off), Construction of commercial buildings, Cardiff, United Kingdom
• Quantum Design S.R.L.Active, Roma, Italy
• Quantum Design SasActive, Les Ulis, France
• Quantum Design Services LimitedActive, Other professional, scientific and technical activities n.e.c., Blyth, United Kingdom
• Quantum Design UK and Ireland LimitedActive, Non-specialised wholesale trade, Surrey, United Kingdom
• Quantum Designing Services LimitedActive, Other business support service activities n.e.c., Barnet, United Kingdom
• Quantum Desk LtdActive, Retail sale of computers, peripheral units and software in specialised stores, Birmingham, United Kingdom
• Quantum Desk Private LimitedActive, Tamil Nadu, since 2025
• Quantum Detection LimitedActive, Other business support service activities n.e.c., Watford, United Kingdom
• Quantum DetectorsUnited Kingdom
• Quantum Detectors LimitedActive, Other research and experimental development on natural sciences and engineering, Didcot, United Kingdom
• Quantum Deutschland SelectActive, Hamburg, Germany
• Quantum Development 10 Spolka Z Ograniczona Odpowiedzialnoscia Spolka KomandytowaActive, Warsaw, Poland
• Quantum Development 20 sp. z o.o.Active, Warsaw, Poland
• Quantum Development Finance LtdActive, Financial intermediation not elsewhere classified, London, United Kingdom
• Quantum Development Properties LimitedActive, Buying and selling of own real estate, Leeds, United Kingdom
• QUANTUM Development, s.r.o.Active, Vyškov, Czech Republic
• Quantum Developments 1 LimitedActive, Buying and selling of own real estate, Morden, United Kingdom
• Quantum Developments LimitedActive, Other letting and operating of own or leased real estate, London, United Kingdom
• Quantum Devices P.LTD.Struck off, Maharashtra, since 1992
• Quantum Devices P.LTD.Struck off, Maharashtra, since 1992
• Quantum Diagnostic Laboratories Private LimitedActive, Maharashtra, since 2025
• Quantum Diagnostics Private LimitedStruck off, Karnataka, since 1997
• Quantum Dice LimitedActive, Manufacture of electronic components, Oxford, United Kingdom
• Quantum Digi Space Private LimitedActive, Telangana, since 2026
• Quantum Digital AI LimitedActive, Business and domestic software development, Ipswich, United Kingdom
• Quantum Digital Commerce LtdActive, Retail sale via mail order houses or via Internet, London, United Kingdom
• Quantum Digital Defence LtdActive, Business and domestic software development, St. Helens, United Kingdom
• Quantum Digital Group LimitedActive, Road Town, British Virgin Islands
• Quantum Digital Holdings LimitedActive, Activities of other holding companies n.e.c., Billericay, United Kingdom
• Quantum Digital LimitedActive, Video production activities, Billericay, United Kingdom
• Quantum Digital Marketing LimitedActive, Management consultancy activities other than financial management, Gerrards Cross, United Kingdom
• Quantum Digital Media LtdActive, Advertising agencies, Hurstpierpoint, United Kingdom
• Quantum Digital Solutions Hungary Korlátolt Felelősségű TársaságActive, Budapest, Hungary
• Quantum Digital Technologies LimitedActive, Retail sale via mail order houses or via Internet, Edinburgh, United Kingdom
• Quantum Digital Technology LimitedActive, Information technology consultancy activities, Milton Keynes, United Kingdom
• Quantum Digital Vision (India) LimitedActive, Maharashtra, since 1980
• Quantum Digital Vision (India) LimitedActive, Tamil Nadu, since 1980
• Quantum Digital Waters LtdActive, Information technology consultancy activities, Chatham, United Kingdom
• Quantum Direct (India) Private LimitedActive, Delhi, since 2001
• Quantum Direct LimitedActive, Management consultancy activities other than financial management, Thornbury, United Kingdom
• Quantum Discount LimitedActive, Retail sale in non-specialised stores with food, beverages or tobacco predominating, Dorset, United Kingdom
• Quantum Dispatch LtdActive, Sound recording and music publishing activities, Stafford, United Kingdom
• Quantum Distribution (India) Private LimitedStruck off, Maharashtra, since 1997
• Quantum Distribution GmbHActive, Berlin, Germany
• Quantum Distributions LtdActive, Retail sale via mail order houses or via Internet, Stockport, United Kingdom
• Quantum Diver LimitedActive, Other sports activities, Banbury, United Kingdom
• Quantum Divergence LimitedActive, Wan Chai, Hong Kong
• Quantum Domestic Services LtdActive, Other service activities n.e.c., Hebden Bridge, United Kingdom
• Quantum Domiciliary Care LimitedLiquidation, Social work activities without accommodation for the elderly and disabled, Willenhall, United Kingdom
• Quantum Doodle LLPActive, Gujarat, since 2025
• Quantum Dot Technology LLPActive, since 2026
• Quantum Dots Private LimitedActive, Odisha, since 2025
• Quantum Dots Technology Private LimitedStruck off, Tamil Nadu, since 2011
• Quantum Drift Fund Ltd.Active, Road Town, British Virgin Islands
• Quantum Drishti Consultancy LLPActive, Madhya Pradesh, since 2024
• Quantum Drive LLPActive, Maharashtra, since 2016
• Quantum Drizle Technologies Private LimitedActive, Karnataka, since 2021
• Quantum Drugs and Pharmaceuticals Privat E LimitedStruck off, Tamil Nadu, since 1999
• Quantum Drugs India LimitedStruck off, Chandigarh, since 1998
• Quantum Drylining LtdActive, Plastering, Milton Keynes, United Kingdom
• Quantum Dyes and Chemicals Private Limit EdStruck off, Gujarat, since 1999
• Quantum Dyexpo Pvt.ltd.Struck off, Maharashtra, since 1992
• Quantum Dynamic Bond FundActive, Mumbai, India
• Quantum Dynamic Marketing LtdActive, Management consultancy activities other than financial management, Egham, United Kingdom
• Quantum Dynamic Research Labs LtdActive, Business and domestic software development, Huntingdon, United Kingdom
• Quantum Dynamics Biosystems LimitedActive, Specialists medical practice activities, Eltham, United Kingdom
• Quantum Dynamics Education & Training Private LimitedActive, Delhi, since 2011
• Quantum Dynamics Group LimitedActive, Non-specialised wholesale trade, London, United Kingdom
• Quantum Dynamics LimitedActive, Manufacture of electronic measuring, testing etc. equipment, not for industrial process control, Poole, United K
• Quantum Dynamics LLPActive, since 2026
• Quantum Dynamix ABActive, Åsa, Sweden
• Quantum Dynamix LtdActive, Buying and selling of own real estate, Orpington, United Kingdom
• Quantum Dynamo LtdActive, Information technology consultancy activities, Ruislip,, United Kingdom
• Quantum E Group LtdActive, Retail sale via mail order houses or via Internet, Merthyr Tydfil, United Kingdom
• Quantum E Solutions LtdActive, Other service activities n.e.c., London, United Kingdom
• Quantum E-Health Tools Private LimitedStruck off, Andhra Pradesh, since 2012
• Quantum E-Life Private LimitedActive, Delhi, since 2025
• Quantum E-Services Private LimitedActive, Haryana, since 2019
• Quantum Eagle Partners LLPStruck off, since 2024
• Quantum Earth Exchange LtdActive, Dormant Company, Sheffield, United Kingdom