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Companies starting with Q
53,593 profiles.
- Quantum Earth LtdActive, Other information technology service activities, Penarth, United Kingdom
- Quantum Eco LimitedActive, Other construction installation, Kingsgate, United Kingdom
- Quantum Eco-Spaces LtdActive (proposal to strike off), Other building completion and finishing, Chester, United Kingdom
- Quantum Ecobuild LimitedActive, Construction of domestic buildings, London, United Kingdom
- Quantum Economics LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Edge Aureum LtdActive, Computer facilities management activities, London, United Kingdom
- Quantum Edge BR LtdActive, Retail sale via mail order houses or via Internet, London, United Kingdom
- Quantum Edge Computing LLPActive, since 2026
- Quantum Edge Consultancy LtdActive, Management consultancy activities other than financial management, Surbiton, United Kingdom
- Quantum Edge Distribution IT Services LtdActive, Non-trading company, London, United Kingdom
- Quantum Edge Electrical Solutions LLPActive, Gujarat, since 2025
- Quantum Edge Group LLCActive, Clearwater, United States
- Quantum Edge Holdings LimitedActive, Activities of other holding companies n.e.c., Stockton-On-Tees, United Kingdom
- Quantum Edge I.T Services LLPActive, West Bengal, since 2025
- Quantum Edge Investments LimitedActive, Dubai, United Arab Emirates
- Quantum Edge Labs Private LimitedActive, Kerala, since 2023
- Quantum Edge Properties LimitedActive, Buying and selling of own real estate, Stockton-On-Tees, United Kingdom
- Quantum Edge R&D LtdActive, Other business support service activities n.e.c., Stockton-On-Tees, United Kingdom
- Quantum Edge Solution Partners LLPActive, Karnataka, since 2024
- Quantum Edge Ventures LtdActive, Financial intermediation not elsewhere classified, London, United Kingdom
- Quantum Educare FoundationActive, Bihar, since 2026
- Quantum Education Hub Private LimitedActive, Maharashtra, since 2026
- Quantum Educational Services Private LimitedStruck off, Gujarat, since 2009
- Quantum Edutech Private LimitedActive, Uttarakhand, since 2020
- Quantum Effect Devicessemiconductor industry, United States
- Quantum Effect LimitedActive, Management consultancy activities other than financial management, Fareham, United Kingdom
- Quantum ehf.Active, Reykjavík, Iceland
- Quantum Eight Technologies International LimitedActive, Road Town, British Virgin Islands
- Quantum Electric (UK) LimitedActive, Other specialised construction activities n.e.c., Brentwood, United Kingdom
- Quantum Electric Solutions LimitedActive, Electrical installation, Wakefield, United Kingdom
- Quantum Electrical & Solar LtdActive, Electrical installation, Cuffley, United Kingdom
- Quantum Electrical and Design LimitedActive, Electrical installation, Stoke On Trent, United Kingdom
- Quantum Electrical Contractors LtdActive, Electrical installation, Doncaster, United Kingdom
- Quantum Electrical Distribution LtdActive, Non-specialised wholesale trade, Crawley, United Kingdom
- Quantum Electrical Engineering LtdActive, Electrical installation, Burnley, United Kingdom
- Quantum Electrical Fire & Security LimitedActive, Electrical installation, Ebbw Vale, United Kingdom
- Quantum Electrical Installations LtdActive, Electrical installation, St. Ives, United Kingdom
- Quantum Electrical Services (Northwest) LtdActive, Electrical installation, Clitheroe, United Kingdom
- Quantum Electrical Services (NW) LtdActive, Electrical installation, Poulton-Le-Fylde, United Kingdom
- Quantum Electrical Services (Sleaford) LimitedActive, Electrical installation, Lincoln, United Kingdom
- Quantum Electrical Services LtdActive, Electrical installation, Birmingham, United Kingdom
- Quantum Electrical Solutions LtdActive, Electrical installation, Abingdon, United Kingdom
- Quantum Electrical SW LtdActive, Electrical installation, Plymouth, United Kingdom
- Quantum Electrics LimitedActive, Electrical installation, Hartlepool, United Kingdom
- Quantum Electro Dynamics LtdActive, Other research and experimental development on natural sciences and engineering, Brighton, United Kingdom
- Quantum Electronic Database LimitedLiquidation, United Kingdom
- Quantum Electronic Solutions LimitedActive, Other professional, scientific and technical activities n.e.c., Bedale, United Kingdom
- Quantum Electronics Global LtdActive, Engineering related scientific and technical consulting activities, Wolverhampton, United Kingdom
- Quantum Electronics LimitedActive, Other telecommunications activities, Glasgow, United Kingdom
- Quantum Electronics Private LimitedActive, Maharashtra, since 1988
- Quantum Electrosoft Private LimitedStruck off, Uttar Pradesh, since 2008
- QUANTUM ELEMENTS PrivateATE LIMITEDActive, Haryana, since 2016
- Quantum Elevate LtdActive, Dormant Company, Haverfordwest, United Kingdom
- Quantum Elevators Private LimitedActive, Karnataka, since 2023
- Quantum Elite Services LtdActive, Specialised cleaning services, St. Neots, United Kingdom
- Quantum Elss Tax Saver FundActive, Mumbai, India
- Quantum Embed LtdActive (proposal to strike off), Computer facilities management activities, Birmingham, United Kingdom
- Quantum Embedded Systems LimitedStruck off, Haryana, since 2007
- Quantum Emerging Growth Partners LPActive, George Town, Grand Cayman, Cayman Islands
- Quantum eMotion CorpListed, United States
- QUANTUM eMOTION CORP.Active, Montréal, Canada
- Quantum EMS LLCActive, Lake Success, United States
- Quantum Encoding LtdActive, Other software publishing, Coalville, United Kingdom
- Quantum Encorp Private LimitedActive, Maharashtra, since 2022
- Quantum Encrypt Private LimitedActive, Madhya Pradesh, since 2026
- Quantum Endeavor Private LimitedActive, Delhi, since 2024
- Quantum Energetics LimitedActive, Other human health activities, London, United Kingdom
- Quantum Energia Verde Comunidad Valenciana SLActive, Castellón De La Plana/Castelló De La Plana, Spain
- Quantum Energia Verde Sociedad LimitadaActive, Bollullos De La Mitación, Spain
- Quantum Energy and Processes SAActive, Chêne-Bougeries, Switzerland
- Quantum Energy Builders Private LimitedActive, Tamil Nadu, since 2020
- Quantum Energy Centre LtdActive, Physical well-being activities, Harrogate, United Kingdom
- Quantum Energy Corporation Holdings LtdActive, Nicosia, Cyprus
- Quantum Energy EstablishmentActive, Vaduz, Liechtenstein
- Quantum Energy Healing LLPActive, London, United Kingdom
- Quantum Energy Hub LimitedActive, Manufacture of soft drinks; production of mineral waters and other bottled waters, Pudsey, United Kingdom
- Quantum Energy Inc.Active, Henderson, United States
- Quantum Energy India Private LimitedStruck off, Maharashtra, since 1996
- Quantum Energy Italia S.R.L.Active, Torino, Italy
- Quantum Energy LimitedActive, Karnataka, since 2020
- Quantum Energy LimitedActive, Agents involved in the sale of a variety of goods, Warwick, United Kingdom
- Quantum Energy LimitedActive, Hyderabad, India
- Quantum Energy LimitedActive, Cork, Ireland
- Quantum Energy Partners Iv, LPActive, Dover, United States
- Quantum Energy Partners V, LPActive, Dover, United States
- Quantum Energy Partners Vi, LPActive, Dover, United States
- Quantum Energy Partners Vii, LPActive, Dover, United States
- Quantum Energy S.R.L.Active, Roma, Italy
- QUANTUM ENERGY SK s. r. o.Active, Bratislava - Mestská Časť Ružinov, Slovakia
- Quantum Energy Solutions LtdActive, Engineering related scientific and technical consulting activities, Reading, United Kingdom
- Quantum Energy Sustainable Goals LimitedActive, Business and domestic software development, London, United Kingdom
- Quantum Energy Systems LimitedActive, Other construction installation, Hinckley, United Kingdom
- Quantum Eng&pm Services LtdActive, Engineering related scientific and technical consulting activities, Pontypridd, United Kingdom
- Quantum Engineered Design LimitedActive, Electrical installation, Romford, United Kingdom
- Quantum Engineering & Consulting Group LtdActive, Engineering related scientific and technical consulting activities, Godalming, United Kingdom
- Quantum Engineering Consultancy LtdActive, Activities of venture and development capital companies, Sunderland, United Kingdom
- Quantum Engineering Developments LimitedActive, Cold forming or folding, Bromsgrove, United Kingdom
- Quantum Engineering Disciplines LtdActive, Construction of other civil engineering projects n.e.c., Bury St. Edmunds, United Kingdom
- Quantum Engineering LtdActive, Other engineering activities, London, United Kingdom
- Quantum Engineering Private LimitedActive, Uttar Pradesh, since 2001
- Quantum Engineering Solutions LtdActive, Manufacture of other fabricated metal products n.e.c., Tavistock, United Kingdom
- Quantum Engineers and Fabricators Private LimitedStruck off, Andhra Pradesh, since 2001
- Quantum Engineers and Fabricators Private Limited.Active, Delhi, since 2004
- Quantum Engineers LimitedActive, Dormant Company, Denby, United Kingdom
- Quantum Engitech Private LimitedActive, Bihar, since 2023
- Quantum Enjoy LimitedActive, Other service activities n.e.c., Highburton, United Kingdom
- Quantum Entangled Technologies LtdActive, Other information technology service activities, Cambridge, United Kingdom
- Quantum Entanglement B.V.Active, Maassluis, Kingdom of the Netherlands
- Quantum Entanglement LimitedActive, Information technology consultancy activities, Stafford, United Kingdom
- Quantum Entanglement S.R.L.Active, București, Sectorul 1, Romania
- Quantum Enterprise Developments LimitedActive, Business and domestic software development, South Croydon, United Kingdom
- Quantum EnterprisesActive, Pune, India
- Quantum EnterprisesActive, Nagpur, India
- Quantum Enterprises and Trading LtdActive, Retail sale via mail order houses or via Internet, Cheadle, United Kingdom
- Quantum Enterprises LLCActive, Hortonville, United States
- Quantum Enterprises Ltd.Active, Dormant Company, Glasgow, United Kingdom
- Quantum Enterprises Private LimitedStruck off, Maharashtra, since 1996
- Quantum Entertainment Private LimitedActive, Tamil Nadu, since 2024
- Quantum Entertainment U.K LtdActive, Motion picture distribution activities, London, United Kingdom
- Quantum Entropy Dynamics GBRActive, Hamburg, Germany
- Quantum Envelope LimitedActive, Business and domestic software development, Hornchurch, United Kingdom
- Quantum Environmental LtdActive, Engineering related scientific and technical consulting activities, Godalming, United Kingdom
- Quantum Environmental Solutions Private LimitedActive, Telangana, since 2021
- Quantum Eot LimitedActive, Other business support service activities n.e.c., Harrogate, United Kingdom
- Quantum Epoch Private LimitedActive, Tamil Nadu, since 2026
- Quantum Equation LdaActive, Carnaxide E Queijas, Portugal
- Quantum Equipment Company Private LimitedActive, Maharashtra, since 1997
- Quantum Equity Advisors Private LimitedStruck off, Maharashtra, since 2008
- Quantum Equity Fund of FundsActive, Mumbai, India
- Quantum equity GmbHActive, Karlsruhe, Germany
- Quantum Equity LtdActive, Residents property management, Slough, United Kingdom
- Quantum Equity Partners, LLCActive, Inglewood, United States
- Quantum Era Holdings LimitedActive, Activities of other holding companies n.e.c., Manchester, United Kingdom
- Quantum Era India Private LimitedActive, Odisha, since 2021
- Quantum Era LtdActive, Other software publishing, Reading, United Kingdom
- Quantum Erp Labs LLPActive, Telangana, since 2026
- Quantum Erp LimitedActive, Information technology consultancy activities, Greenford, United Kingdom
- Quantum Erp Services LtdActive, Information technology consultancy activities, Spalding, United Kingdom
- Quantum Erusion LtdActive, Sound recording and music publishing activities, London, United Kingdom
- Quantum Es LimitedActive, Manufacture of engines and turbines, except aircraft, vehicle and cycle engines, Merthyr Tydfil, United Kingdom
- Quantum Eservices Private LimitedUnder liquidation, Maharashtra, since 2005
- Quantum Esg Best in Class Strategy FundActive, Mumbai, India
- Quantum Espresso FoundationActive, Other research and experimental development on natural sciences and engineering, Milton, United Kingdom
- Quantum Essence LimitedActive, Event catering activities, London, United Kingdom
- Quantum Estate Agency LimitedActive, Real estate agencies, York, United Kingdom
- Quantum Estate Group LimitedActive, Other letting and operating of own or leased real estate, London, United Kingdom
- Quantum Estate Properties, LLCActive, Houston, United States
- Quantum Estate Solutions LtdActive, Buying and selling of own real estate, Crawley, United Kingdom
- Quantum Estates & Developments LimitedActive, Buying and selling of own real estate, Leicester, United Kingdom
- Quantum Estates Investments LimitedActive, Other letting and operating of own or leased real estate, Princes Risborough, United Kingdom
- Quantum Estates LtdActive, Other letting and operating of own or leased real estate, Slough, United Kingdom
- Quantum Estates Private LimitedActive, Delhi, since 2005
- Quantum Ether Systems LtdActive, Other professional, scientific and technical activities n.e.c., London, United Kingdom
- Quantum Ethos Management Services LtdActive, Management consultancy activities other than financial management, Halstead, United Kingdom
- Quantum European LtdActive (proposal to strike off), Service activities incidental to air transportation, Hexham, United Kingdom
- Quantum Europoint LimitedActive, Wholesale of other intermediate products, Chertsey, United Kingdom
- Quantum EV Motors LLPActive, Tamil Nadu, since 2026
- Quantum Event Management Private LimitedStruck off, Maharashtra, since 2007
- Quantum Event Marketing Services LimitedActive, Advertising agencies, Derby, United Kingdom
- Quantum Event Production LtdActive, Other service activities n.e.c., Stoke-On-Trent, United Kingdom
- Quantum Events LimitedActive, Other sports activities, Stanmore, United Kingdom
- Quantum Evolution LimitedActive, Other professional, scientific and technical activities n.e.c., Teddington, United Kingdom
- Quantum Evolve LimitedActive, Information technology consultancy activities, Chorley, United Kingdom
- Quantum Ex LimitedActive, Information technology consultancy activities, Bradford, United Kingdom
- Quantum Ex LtdInactive, London, United Kingdom
- Quantum Exchange LtdActive, Financial intermediation not elsewhere classified, Bolton, United Kingdom
- Quantum Executive Consulting LimitedActive, Information technology consultancy activities, Horley, United Kingdom
- Quantum Executive Services LimitedActive, Combined office administrative service activities, Maidenhead, United Kingdom
- Quantum Executive Travel LtdActive, Taxi operation, Leicester, United Kingdom
- Quantum Exhibitions LimitedActive, Activities of exhibition and fair organisers, Halifax, United Kingdom
- Quantum Exim Private LimitedStruck off, Gujarat, since 1997
- Quantum Expert Solutions LimitedActive, Quantity surveying activities, Leeds, United Kingdom
- Quantum Expertise LtdActive, Management consultancy activities other than financial management, Sunderland, United Kingdom
- Quantum Experts (London) LtdActive, Other professional, scientific and technical activities n.e.c., Herts, United Kingdom
- Quantum Experts (Partnership) LtdActive, Other professional, scientific and technical activities n.e.c., Herts, United Kingdom
- Quantum Experts LtdActive, Quantity surveying activities, Barnet, United Kingdom
- Quantum Exponential Ebt LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Exponential Group PLCActive, Information technology consultancy activities, London, United Kingdom
- Quantum Exponential LimitedActive, Information technology consultancy activities, London, United Kingdom
- Quantum Exponential Management LtdActive, Activities auxiliary to financial intermediation n.e.c., London, United Kingdom
- Quantum Export L.P.Active, Glasgow, United Kingdom
- Quantum Exports Private LimitedStruck off, West Bengal, since 1996
- Quantum Expotrade Private LimitedActive, Uttar Pradesh, since 2014
- Quantum Express Holdings LimitedActive, Tortola, British Virgin Islands
- Quantum Express London LtdActive, Unlicensed carrier, London, United Kingdom
- Quantum Express LtdActive, Other transportation support activities, Nottingham, United Kingdom
- Quantum Fabrix LimitedActive, Manufacture of computers and peripheral equipment, Kidlington, United Kingdom
- Quantum Facades LtdActive, Floor and wall covering, Wrexham, United Kingdom
- Quantum Facilitators (India) Private LimitedActive, Karnataka, since 2026
- Quantum Facilities LimitedActive, Other specialised construction activities n.e.c., St. Helens, United Kingdom
- Quantum Facilities Management LtdActive, Other specialised construction activities n.e.c., Wrexham, United Kingdom
- Quantum Factors LimitedActive, Other business support service activities n.e.c., Liverpool, United Kingdom
- Quantum Fantay
- Quantum Fashion Private LimitedActive, Maharashtra, since 2000
- Quantum Fast Energy Ventures Private LimitedActive, Karnataka, since 2025
- Quantum Fast Services LtdActive (proposal to strike off), Buying and selling of own real estate, Cardiff, United Kingdom
- Quantum Fellows OyActive, Helsinki, Finland
- Quantum Fem LtdActive, Other human health activities, Isleworth, United Kingdom
- Quantum Fencing LtdActive, Other construction installation, Henley-On-Thames, United Kingdom
- Quantum Fertilisers LimitedInactive, Wan Chai, Hong Kong
- Quantum Fibre Services LimitedActive, Other telecommunications activities, Peterborough, United Kingdom
- Quantum Fibre Solutions LimitedActive, Wired telecommunications activities, Wallington, United Kingdom
- Quantum Fibretech Private LimitedActive, West Bengal, since 2025
- Quantum Fidelity Investments Pte LtdInactive, Singapore, Singapore
- Quantum Field Capital LimitedActive, Road Town, British Virgin Islands
- Quantum Field Dynamics LimitedActive, Road Town, British Virgin Islands
- Quantum Field Electrical LtdActive, Electrical installation, Bournemouth, United Kingdom
- Quantum Field LtdActive, Other business support service activities n.e.c., London, United Kingdom
- Quantum Field Private LimitedActive, Andhra Pradesh, since 2026
- Quantum Field Services LtdActive, Repair of fabricated metal products, Pudsey Leeds, United Kingdom
- Quantum Fields AI LimitedActive, Dormant Company, Chippenham, United Kingdom
- Quantum Fifty LtdActive, Management consultancy activities other than financial management, Swansea, United Kingdom
- Quantum Films LimitedActive, Maharashtra, since 2006
- Quantum Filtration Medium Pty LtdActive, West Leederville, Australia
- Quantum Finace LimitedActive, Financial intermediation not elsewhere classified, London, United Kingdom
- Quantum FinanceInactive, Paris 14, France
- Quantum Finance and Technology LimitedActive, Auckland, New Zealand
- Quantum Finance Finland OyActive, Espoo, Finland
- Quantum Finance LtdActive, Activities of mortgage finance companies, Newtownards, United Kingdom
- Quantum Finance Ltd.Active, The Valley, Anguilla
- Quantum Finance Pvt. Ltd.Struck off, West Bengal, since 1995
- Quantum Financial Advisers LtdActive, Activities of insurance agents and brokers, Hertfordshire, United Kingdom
- Quantum Financial Group LtdActive, Financial intermediation not elsewhere classified, London, United Kingdom
- Quantum Financial Holdings LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Financial Holdings LimitedActive, Rough Point, British Virgin Islands
- Quantum Financial LtdActive, Security dealing on own account, London, United Kingdom
- Quantum Financial Planning LimitedActive, Other business support service activities n.e.c., Ilford, United Kingdom
- Quantum Financial s.r.o.Active, Banská Bystrica, Slovakia
- Quantum Financial ServicesInactive, Ieper, Belgium
- Quantum Financial Services LtdActive, Financial intermediation not elsewhere classified, Bromley, United Kingdom
- Quantum Financial System LimitedActive, Financial intermediation not elsewhere classified, London, United Kingdom
- Quantum Fincap Private LimitedStruck off, Punjab, since 1995
- Quantum Finch LtdActive (proposal to strike off), Retail sale via mail order houses or via Internet, Cardiff, United Kingdom
- Quantum Finco Imf Private LimitedActive, Maharashtra, since 2022
- Quantum Findata Consulting LtdActive, Information technology consultancy activities, Reading, United Kingdom
- Quantum Fine Art LtdActive, Retail sale in commercial art galleries, London, United Kingdom
- Quantum Finserve LLPActive, Haryana
- Quantum Fintech Leap LimitedActive, Business and domestic software development, London, United Kingdom
- Quantum Finvest Private LimitedStruck off, Punjab, since 1995
- Quantum Fire and Security LtdActive, Security systems service activities, Saltash, United Kingdom
- Quantum Fire Consultancy LtdActive, Engineering related scientific and technical consulting activities, Godalming, United Kingdom
- Quantum Fire LimitedActive, Electrical installation, Stevenage, United Kingdom
- Quantum Fire Risk Management LtdActive, Other professional, scientific and technical activities n.e.c., Belfast, United Kingdom
- Quantum Firetec LtdActive, Wireless telecommunications activities, Bury St. Edmunds, United Kingdom
- Quantum Fireworks LtdActive, Non-specialised wholesale trade, London, United Kingdom
- Quantum First Aid Training LtdActive, Tour operator activities, Wetherby, United Kingdom
- Quantum First Automation Inc.Active, Mississauga, Canada
- Quantum First LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Fitness LimitedActive, Operation of sports facilities, Cardiff, United Kingdom
- Quantum FL S De RL De CVActive, Ciudad De México, Mexico
- Quantum Fleet and Automotive Kent LtdActive, Sale of other motor vehicles, Sittingbourne, United Kingdom
- Quantum Fleet Management LimitedActive, Other professional, scientific and technical activities n.e.c., Grantham, United Kingdom
- Quantum Fleet Solutions LimitedActive, Wholesale trade of motor vehicle parts and accessories, Liverpool, United Kingdom
- Quantum Flora LimitedActive, Retail sale via mail order houses or via Internet, Bournemouth, United Kingdom
- Quantum Flow 222 LtdActive, Video production activities, London, United Kingdom
- Quantum Flow Automation LtdActive, Engineering related scientific and technical consulting activities, Burnley, United Kingdom
- Quantum Flow LtdActive, Other business support service activities n.e.c., London, United Kingdom
- Quantum Flow Technologies Private LimitedActive, Karnataka, since 2026
- Quantum Flux Creators LtdActive (proposal to strike off), Management consultancy activities other than financial management, London, United Kingd
- Quantum FM LtdActive, Freight transport by road, Bolton, United Kingdom
- Quantum FM Solutions LtdActive, Other activities of employment placement agencies, Edenbridge, United Kingdom
- Quantum FMD PrivatstiftungActive, Wien, Austria
- Quantum FMS Private LimitedActive, Uttar Pradesh, since 2025
- Quantum Foam LtdActive, Video production activities, Belfast, United Kingdom
- Quantum Focus LtdActive, Data processing, hosting and related activities, London, United Kingdom
- Quantum Food Ingredients LimitedActive, Other food services, London, United Kingdom
- Quantum Food Private LimitedStruck off, Delhi, since 1999
- Quantum Foods LtdActive, Production of meat and poultry meat products, Wolverhampton, United Kingdom
- Quantum Football Group LtdActive, Other sports activities, Barrow-In-Furness, United Kingdom
- Quantum Football LtdActive, Sports and recreation education, Basildon, United Kingdom
- Quantum Force LtdActive, Other engineering activities, London, United Kingdom
- Quantum Force Talent LtdActive, Other activities of employment placement agencies, Sheffield, United Kingdom
- Quantum Forces Tradelink Private LimitedStruck off, Gujarat, since 2002
- Quantum Forensics LimitedActive, Engineering related scientific and technical consulting activities, Watford, United Kingdom
- Quantum Forge LimitedActive, Computer facilities management activities, Stockport, United Kingdom
- Quantum Forge Private LimitedActive, Andhra Pradesh, since 2025
- Quantum Forge Systems LtdActive, Manufacture of computers and peripheral equipment, Birmingham, United Kingdom
- Quantum Fort Private LimitedActive, Gujarat, since 2025
- Quantum Fort Solutions LLPActive, Firmley, United Kingdom
- Quantum Forth LimitedActive, Development of building projects, Loanhead, United Kingdom
- Quantum Fortune4 Technologies Private LimitedActive, Maharashtra, since 2023
- Quantum Foundation Private LimitedStruck off, Tamil Nadu, since 2010
- Quantum Foundry LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Four Analytics LLPActive, Maharashtra, since 2016
- Quantum Fourteen LtdActive (proposal to strike off), Web portals, Marlow, United Kingdom
- Quantum Fox Private LimitedActive, Bihar, since 2023
- Quantum Frameworks Private LimitedActive, Tamil Nadu, since 2024
- Quantum Freight Logistics Private Limite DStruck off, Tamil Nadu, since 2004
- Quantum Frequencies LimitedActive, Wireless telecommunications activities, Andover, United Kingdom
- Quantum Frequency Centre (Scotland) Ltd.Active, Other service activities n.e.c., Dundee, United Kingdom
- Quantum Frequency Centre Ltd.Active, Other service activities n.e.c., Dundee, United Kingdom
- Quantum Frequency Technology LtdActive, Other human health activities, West Sussex, United Kingdom
- Quantum Frog LtdActive (proposal to strike off), Dormant Company, London, United Kingdom
- Quantum Fuel Systems LLCActive, Lake Forest, United States
- Quantum Fuel Systems Technologies Worldwide, Inc.Active, Wilmington, United States
- Quantum Fueltech Private LimitedActive, Madhya Pradesh, since 2001
- Quantum FundActive, West Malling, United Kingdom
- Quantum FundActive, Birkirkara, Malta
- Quantum Fund S LPActive, Lewes, United States
- Quantum Fundacja RodzinnaActive, Sławków, Poland
- Quantum Funding LimitedActive, Financial leasing, Reading, United Kingdom
- Quantum Fury AI Solutions Private LimitedActive, Karnataka, since 2025
- Quantum Fusion Ecapital LimitedActive, Dungarvan, Ireland
- Quantum Fusion LimitedActive (proposal to strike off), Maintenance and repair of motor vehicles, Birmingham, United Kingdom
- Quantum Fusion Private LimitedActive, Telangana, since 2024
- Quantum Fusion Public Limited CompanyActive, Dungarvan, Ireland
- Quantum Fusion Strategies LtdActive, Advertising agencies, Northolt, United Kingdom
- Quantum Future Innovations Technologies Private LimitedActive, Jammu and Kashmir, since 2025
- Quantum Future LtdActive, Combined office administrative service activities, Newtownards, United Kingdom
- Quantum Future Property LtdActive, Buying and selling of own real estate, Aberdeen, United Kingdom
- Quantum Future Tech LLPActive, Maharashtra, since 2018
- Quantum Futures Global LtdActive, Other business support service activities n.e.c., Woking, United Kingdom
- Quantum Futures International LimitedActive, Other business support service activities n.e.c., Woking, United Kingdom
- Quantum FX Trading Pty LtdActive, Melbourne, Australia
- Quantum G Labs LtdActive, Book publishing, London, United Kingdom
- Quantum G LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Games Private LimitedStruck off, Maharashtra, since 2022
- Quantum Games Studio LtdActive, Ready-made interactive leisure and entertainment software development, Tiverton, United Kingdom
- Quantum Gaming GmbHActive, Tübingen, Germany
- Quantum Gandiva AI Private LimitedActive, Andhra Pradesh, since 2025
- Quantum Garage LtdActive, Maintenance and repair of motor vehicles, London, United Kingdom
- Quantum Garden Applications LtdActive, Business and domestic software development, Burnham-On-Sea, United Kingdom
- Quantum Garden LtdActive, Business and domestic software development, Burnham On Sea, United Kingdom
- Quantum Garments Private LimitedStruck off, West Bengal, since 2003
- Quantum Gas Engineering LtdActive, Plumbing, heat and air-conditioning installation, London, United Kingdom
- Quantum Gas Europe A/SActive, Aalborg Øst, Denmark
- Quantum Gate LimitedActive, Information technology consultancy activities, Borehamwood, United Kingdom
- Quantum GBL, LLCActive, Wilmington, United States
- Quantum Geeks (OPC) Private LimitedActive, Maharashtra, since 2024
- Quantum Gen LimitedActive (proposal to strike off), Other specialised construction activities n.e.c., Dartford, United Kingdom
- Quantum General Industries Private LimitedActive, Maharashtra, since 2022
- Quantum Generate LtdActive, Other information technology service activities, Milton Keynes, United Kingdom
- Quantum GenerationActive, Paris, France
- Quantum Genesis AI Corp.Listed, United States
- Quantum Genesis LtdActive, Retail sale via mail order houses or via Internet, Leicester, United Kingdom
- Quantum Genius LtdActive, Book publishing, London, United Kingdom
- Quantum GenomicsInactive, Paris, France
- Quantum Genomics LtdActive, Information technology consultancy activities, Cambridge, United Kingdom
- Quantum Geotechnic LimitedActive, Test drilling and boring, Cheshire, United Kingdom
- Quantum Gesellschaft für Beteiligungen & Grundbesitz mbHActive, Staufen Im Breisgau, Germany
- Quantum Gest LdaActive, Mem Martins, Portugal
- Quantum Glasgow LimitedActive, Maintenance and repair of motor vehicles, Glasgow, United Kingdom
- Quantum Glass InternationalInactive, Paris, France
- Quantum Glide Technologies LLPActive, since 2026
- Quantum Global (Apac) Pte. Ltd.Active, Singapore, Singapore
- Quantum Global Associates LtdActive, Business and domestic software development, Birmingham, United Kingdom
- Quantum Global Business SolutionsActive, Kolkata, India
- Quantum Global Consulting LtdActive, Management consultancy activities other than financial management, Watford, United Kingdom
- Quantum Global Enterprise LtdActive, Other information service activities n.e.c., London, United Kingdom
- Quantum Global Enterprises LLPActive, since 2025
- Quantum Global Holdings LtdActive, Retail sale via mail order houses or via Internet, London, United Kingdom
- Quantum Global Infratech LimitedActive, Delhi, since 2007
- Quantum Global Investment Management AGActive, Zug, Switzerland
- Quantum Global Investments LimitedActive, Buying and selling of own real estate, London, United Kingdom
- Quantum Global IT Solutions LtdActive, Information technology consultancy activities, Hayes, United Kingdom
- Quantum Global LtdActive, Accounting and auditing activities, Cheltenham, United Kingdom
- Quantum Global Management LtdActive (proposal to strike off), Other business support service activities n.e.c., London, United Kingdom
- Quantum Global Marketing LtdActive (proposal to strike off), Market research and public opinion polling, London, United Kingdom
- Quantum Global Sciences LimitedActive, Retail sale via mail order houses or via Internet, Middlesbrough, United Kingdom
- Quantum Global Search LimitedActive, Other activities of employment placement agencies, Solihull, United Kingdom
- Quantum Global Securities LimitedActive, Delhi, since 1990
- Quantum Global Services Private LimitedActive, Maharashtra, since 2026
- Quantum Global Solutions LimitedActive, Other business support service activities n.e.c., London, United Kingdom
- Quantum Global SPC - African Opportunities Fund Segregated PortfolioInactive, George Town, Cayman Islands
- Quantum Global Technologies LLCActive, Wilmington, United Kingdom
- Quantum Global Technologies LLPActive, since 2026
- Quantum GmbHActive, Ratingen, Germany
- Quantum GN LimitedActive, Other business support service activities n.e.c., Manchester, United Kingdom
- Quantum Goats Systems LimitedActive, Manufacture of consumer electronics, Craigavon, United Kingdom
- Quantum Gold FundActive, Mumbai, India
- Quantum Gold Savings FundActive, Mumbai, India
- Quantum Golf LtdActive, Urban planning and landscape architectural activities, Aspley Guise, United Kingdom
- Quantum Governance Systems LtdActive, Management consultancy activities other than financial management, The City Of London, United Kingdom
- Quantum Graphene LimitedActive, Other information service activities n.e.c., London, United Kingdom
- Quantum Graphics, Inc.Active, Eden Prairie, United States
- Quantum Gravity Solutions Private LimitedActive, Telangana, since 2026
- Quantum Green Cement Private LimitedActive, Chhattisgarh, since 2026
- Quantum Green Earth Private LimitedStruck off, Karnataka, since 2019
- Quantum Green Energy Engineering LtdActive, Engineering related scientific and technical consulting activities, London, United Kingdom
- Quantum Green Energy LtdActive, Other business support service activities n.e.c., Liverpool, United Kingdom
- Quantum Green Private LimitedActive, Andhra Pradesh, since 2007
- Quantum Green Steel Works Private LimitedActive, Karnataka, since 2025
- Quantum Green Ventures Private LimitedActive, Odisha, since 2026
- Quantum Grid LtdActive (proposal to strike off), Reproduction of computer media, Cardiff, United Kingdom
- Quantum Groundworks LimitedActive, Construction of domestic buildings, Burton On Trent, United Kingdom
- Quantum Group (Management) LimitedActive, Development of building projects, Bournemouth, United Kingdom
- Quantum Group (North West) LimitedActive, Construction of other civil engineering projects n.e.c., Oldham, United Kingdom
- Quantum Group (QG Corporation UK) LtdActive, Activities of head offices, Bournemouth, United Kingdom
- Quantum Group Holdings LtdActive, Activities of head offices, Bournemouth, United Kingdom
- Quantum Group LtdActive, Activities of construction holding companies, Croydon, United Kingdom
- Quantum Group Renewables LLPActive, Chichester, United Kingdom
- Quantum Group Services LimitedActive, Other business support service activities n.e.c., Sutton, United Kingdom
- Quantum Group Spółka z ograniczoną odpowiedzialnością S.K.A.Active, Sosnowiec, Poland
- Quantum Group SW LtdActive, Construction of commercial buildings, Plymouth, United Kingdom
- Quantum Group VII LPActive, Lewes, United States
- Quantum Grove Investments LtdActive, Other letting and operating of own or leased real estate, London, United Kingdom
- Quantum Growth AI Agency LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Growth International LtdActive, Wholesale of clothing and footwear, Southampton, United Kingdom
- Quantum Growth Investments corp.Active, Ottawa, Canada
- Quantum Growth LtdActive, Retail sale via mail order houses or via Internet, Rochdale, United Kingdom
- Quantum Grundstückshandels-GmbHActive, Berlin, Germany
- Quantum Guard Systems LtdActive, Security systems service activities, Bolton, United Kingdom
- Quantum Gully Private LimitedActive, Karnataka, since 2021
- Quantum Guru India Private LimitedActive, Tamil Nadu, since 2025
- Quantum Habitare IIIActive, Hamburg, Germany
- Quantum Handshake LtdActive, Business and domestic software development, London, United Kingdom
- Quantum Harmony LtdActive, Business and domestic software development, Rotherham, United Kingdom
- Quantum Harvesters Private LimitedStruck off, Telangana, since 1997
- Quantum Heal Private LimitedActive, Karnataka, since 2022
- Quantum Healer LtdActive, Other human health activities, Gunnislake, United Kingdom
- Quantum Healing Academy LtdActive, Other education n.e.c., Bridgwater, United Kingdom
- Quantum Healing Source LimitedActive (proposal to strike off), Specialists medical practice activities, Carterton, United Kingdom
- Quantum Health & Pharmaceutical Private LimitedActive, Maharashtra, since 2021
- Quantum Health & Wellbeing LtdActive, Other human health activities, Belfast, United Kingdom
- Quantum Health Analytics (UK) LtdActive, Other human health activities, Cambridge, United Kingdom
- Quantum Health and Social LtdActive (proposal to strike off), General cleaning of buildings, Southport, United Kingdom
- Quantum Health and Wellness LtdActive, Retail sale of medical and orthopaedic goods in specialised stores (not incl. hearing aids) n.e.c., Wallasey, Un
- Quantum Health Care LLPActive, since 2026
- Quantum Health Care Systems Private LimitedStruck off, Maharashtra, since 1994
- Quantum Health Consulting LimitedActive, Hospital activities, London, United Kingdom
- Quantum Health Informatics (OPC) Private LimitedActive, Delhi, since 2018
- Quantum Health LtdActive, Other human health activities, London, United Kingdom
- Quantum Health Manager Private LimitedActive, Maharashtra, since 2020
- Quantum Health Solutions LimitedActive, Hospital activities, Warrington, United Kingdom
- Quantum Health Tech LtdActive, Retail sale via mail order houses or via Internet, London, United Kingdom
- Quantum Health, Inc.Active, Wilmington, United States
- Quantum Healthcare Consultants LimitedActive, Specialists medical practice activities, Romsey, United Kingdom
- Quantum Healthcare Fund No. 2 Limited PartnershipActive, Cambridge, United Kingdom
- Quantum Healthcare LimitedActive, Other human health activities, Carlisle, United Kingdom
- Quantum Heap LtdActive, Sound recording and music publishing activities, London, United Kingdom
- Quantum Heaps India Private LimitedActive, Delhi, since 2026
- Quantum Heart Productions Ltd.Active, Other publishing activities, Whitstable, United Kingdom
- Quantum Heat C.I.C.Active (proposal to strike off), Research and experimental development on social sciences and humanities, Worthing, Unit
- Quantum Heat Treaters India Private LimitedActive, Tamil Nadu, since 2004
- Quantum Heath LimitedActive, Activities of other holding companies n.e.c., Lichfield, United Kingdom
- Quantum Heating and Energy Solution's LtdLiquidation, Plumbing, heat and air-conditioning installation, Emsworth, United Kingdom
- Quantum Heating Services LimitedActive, Plumbing, heat and air-conditioning installation, Birmingham, United Kingdom
- Quantum Heights LimitedActive, Information technology consultancy activities, London, United Kingdom
- Quantum Heights Properties LimitedActive, Residents property management, Bournemouth (Dorset), United Kingdom
- Quantum Helium LimitedActive, Sydney, Australia
- Quantum Herbals Private LimitedStruck off, West Bengal, since 2005
- Quantum Heritage International LimitedActive, Activities auxiliary to financial intermediation n.e.c., London, United Kingdom
- Quantum Heritage LimitedActive, Manufacture of motor vehicles, Kingsbridge, United Kingdom
- Quantum Hertz Research and Techno Solutions Private LimitedStruck off, Tamil Nadu, since 2010
- Quantum Highways LimitedActive, Construction of roads and motorways, Scunthorpe, United Kingdom
- Quantum Hipno Energy LtdActive, Other human health activities, Gateshead, United Kingdom
- Quantum Hire and Sales LtdActive, Wholesale of mining, construction and civil engineering machinery, Belfast, United Kingdom
- Quantum Hire LtdActive (proposal to strike off), Renting and leasing of cars and light motor vehicles, Cardiff, United Kingdom
- Quantum Hitech Imaging LLPActive, Maharashtra
- Quantum Hitech Merchandising Private LimitedActive, Delhi, since 1997
- Quantum Hive Solutions LtdActive, Other information technology service activities, Milton Keynes, United Kingdom
- Quantum Hive Ventures LtdActive (proposal to strike off), Retail sale via mail order houses or via Internet, South Ockendon, United Kingdom
- Quantum Hold Co LtdActive, Activities of other holding companies n.e.c., Bournemouth, United Kingdom
- Quantum Holdco Us Bidco Inc.Active, Wilmington, United States
- Quantum Holding Finco LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Holding Midco 1 LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Holding Midco 2 LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Holding Private LimitedActive, Telangana, since 2019
- Quantum Holding Topco LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Holding UK Bidco LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Holdings (Campsie) LimitedActive, Wholesale of hardware, plumbing and heating equipment and supplies, Londonderry, United Kingdom
- Quantum Holdings (N.i.) LtdActive, Activities of other holding companies n.e.c., Dungannon, United Kingdom
- Quantum Holdings Group LtdActive, Buying and selling of own real estate, Smethwick, United Kingdom
- Quantum Holdings LimitedActive, Douglas, Isle of Man
- Quantum Holdings London LtdActive, Buying and selling of own real estate, Loughton, United Kingdom
- Quantum Holdings LtdActive, Activities of other holding companies n.e.c., Harrogate, United Kingdom
- Quantum Holdings, LLCActive, Bozeman, United States
- Quantum Home Improvement LtdActive, Construction of domestic buildings, Swansea, United Kingdom
- Quantum Homes and Investments LtdActive, Buying and selling of own real estate, Canary Wharf London, United Kingdom
- Quantum Homes Holdings LimitedActive, Activities of other holding companies n.e.c., Bournemouth, United Kingdom
- Quantum Homes LimitedActive, Development of building projects, Bournemouth, United Kingdom
- Quantum Homes Private LimitedActive, Maharashtra, since 2007
- Quantum Hope Developments LtdActive, Development of building projects, Ipswich, United Kingdom
- Quantum Hope Holdings LtdActive, Activities of other holding companies n.e.c., Ipswich, United Kingdom
- Quantum HorizonActive, Paris, France
- Quantum Horizon Capital, LLCActive, Wilmington, United States
- Quantum Horizon Private LimitedActive, Madhya Pradesh, since 2025
- Quantum Horizons LtdActive, Business and domestic software development, London, United Kingdom
- Quantum Hosiery LimitedInactive, Belfast, United Kingdom
- Quantum Hosting Support UnlimitedActive (proposal to strike off), Information technology consultancy activities, Belfast, United Kingdom
- Quantum Hotel LtdActive, Hotels and similar accommodation, Forfar, United Kingdom
- Quantum Hotels LimitedInactive, London, United Kingdom
- Quantum Hotels Private LimitedStruck off, West Bengal, since 2008
- Quantum House LimitedActive, Management consultancy activities other than financial management, Maldon, United Kingdom
- Quantum House Management LimitedActive, Other letting and operating of own or leased real estate, Nottingham, United Kingdom
- Quantum House Properties LimitedActive, Dormant Company, Leicester, United Kingdom
- Quantum Housing Capital LtdActive, Management of real estate on a fee or contract basis, Birmingham, United Kingdom
- Quantum Housing LimitedActive, Other letting and operating of own or leased real estate, Hornchurch, United Kingdom
- Quantum HQ Associates LtdActive, Bookkeeping activities, London, United Kingdom
- Quantum HR India Private LimitedActive, Karnataka, since 2024
- Quantum HR LtdActive, Management consultancy activities other than financial management, Slough, United Kingdom
- Quantum HRM Systems Private LimitedActive, Telangana, since 2024
- Quantum Hub India Private LimitedActive, Jammu and Kashmir, since 2026
- Quantum Hub LtdActive, Other human health activities, London, United Kingdom
- Quantum Human Resources LtdActive, Information technology consultancy activities, Belfast, United Kingdom
- Quantum Hydro-Gen LimitedActive, Other research and experimental development on natural sciences and engineering, Congleton, United Kingdom
- Quantum Hydrocarbons Private LimitedStruck off, Jharkhand, since 2013
- Quantum Hydroponic Services LtdActive, Growing of vegetables and melons, roots and tubers, London, United Kingdom
- Quantum Hygiene LimitedLiquidation, Other service activities n.e.c., London, United Kingdom
- Quantum I Computing LimitedActive, Information technology consultancy activities, London, United Kingdom