Companies starting with Q
53,593 records.
- Quantum Nexus Innovations LtdActive, Other information technology service activities, London, United Kingdom
- Quantum Nexus LtdActive, Other software publishing, Kington, United Kingdom
- Quantum Nexus Private LimitedActive, Delhi, since 2024
- Quantum Nexus Technologies LtdActive (proposal to strike off), Publishing of computer games, London, United Kingdom
- Quantum Nifty 50 EtfActive, Mumbai, India
- Quantum Nifty 50 Etf Fund of FundActive, Mumbai, India
- Quantum Nirman Private LimitedActive, West Bengal, since 2006
- Quantum Node LimitedActive, Information technology consultancy activities, London, United Kingdom
- Quantum Noise UK LimitedActive, Motion picture, video and television programme post-production activities, Saffron Walden, United Kingdom
- Quantum North LimitedActive, Information technology consultancy activities, London, United Kingdom
- Quantum Notes LtdActive, Development of building projects, Belfast, United Kingdom
- Quantum Nova Consulting LimitedActive, Motion picture production activities, Romford, United Kingdom
- Quantum Nova Corporation Ltd.Active, Activities of other holding companies n.e.c., Uckfield, United Kingdom
- Quantum Nova IT Solutions Private LimitedActive, Telangana, since 2026
- Quantum Nova LimitedActive, Buying and selling of own real estate, Kington, United Kingdom
- Quantum Nova Private LimitedActive, Maharashtra, since 2025
- Quantum NRG (Supply) LtdActive, Distribution of electricity, Birmingham, United Kingdom
- Quantum NRG Ltd.Active, Combined facilities support activities, Birmingham, United Kingdom
- Quantum Nuclear Services LimitedActive, Other service activities n.e.c., Lowestoft, United Kingdom
- Quantum Nucleus Private LimitedActive, Haryana, since 2017
- Quantum Nutrition Private LimitedActive, Uttar Pradesh, since 2026
- Quantum O2 LtdActive, Management consultancy activities other than financial management, Hounslow/Greater London, United Kingdom
- Quantum O2 LtdActive, London, United Kingdom
- Quantum Obd2 LimitedActive, Retail trade of motor vehicle parts and accessories, Crewe, United Kingdom
- Quantum Odds Private LimitedActive, Maharashtra, since 2025
- Quantum Odyssey Consulting LtdActive, Management consultancy activities other than financial management, Clacton-On-Sea, United Kingdom
- Quantum of 112 Buckland Street, LLCActive, Farmington, United States
- Quantum of 2920 Berlin Turnpike, LLCActive, Farmington, United States
- Quantum of Berlin Ii, LLCActive, Farmington, United States
- Quantum of Solace LtdActive (proposal to strike off), Retail sale of clothing in specialised stores, London, United Kingdom
- Quantum of Storage LtdActive, Information technology consultancy activities, Watford, United Kingdom
- Quantum of Time LtdActive, Wholesale of watches and jewellery, London, United Kingdom
- Quantum of Value LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Office Assist LtdActive, Combined office administrative service activities, Doncaster, United Kingdom
- Quantum Office of Cromwell, LLCActive, Farmington, United States
- Quantum Offices LtdActive, Other business support service activities n.e.c., Ilford, United Kingdom
- Quantum Offshore LimitedLiquidation, Manufacture of other special-purpose machinery n.e.c., Kingston Upon Thames, United Kingdom
- Quantum Omega India Private LimitedActive, Uttar Pradesh, since 2026
- Quantum Onco Solutions LLPActive, since 2026
- Quantum Oncology Center LLPActive, since 2025
- Quantum One Capital LimitedActive, Quantity surveying activities, Rochester, United Kingdom
- Quantum One Investments LimitedActive, Other letting and operating of own or leased real estate, Nottingham, United Kingdom
- Quantum One Spółka Z Ograniczoną Odpowiedzialnością Spółka KomandytowaActive, Jędrzejów, Poland
- Quantum Opes LtdActive, General secondary education, London, United Kingdom
- Quantum Opportunity Fund II GmbH & Co. KGActive, München, Germany
- Quantum Opportunity Partners LLPActive, Gujarat
- Quantum Ops LimitedActive, Information technology consultancy activities, London, United Kingdom
- Quantum Optique LtdActive (proposal to strike off), Other human health activities, Bolton, United Kingdom
- Quantum Optisphere LtdActive, Other letting and operating of own or leased real estate, Ferndown, United Kingdom
- Quantum Opto Audiovisual Private LimitedActive, Karnataka, since 2025
- Quantum Opus LtdActive, Credit granting by non-deposit taking finance houses and other specialist consumer credit grantors, London, Unit
- Quantum Orange LtdActive, Post-graduate level higher education, London, United Kingdom
- Quantum Orbis LtdActive, Other retail sale in non-specialised stores, Manchester, United Kingdom
- Quantum Orbit LtdActive, Other retail sale not in stores, stalls or markets, Dagenham, United Kingdom
- Quantum Organic Farm LLPActive, Uttar Pradesh
- Quantum Origination LimitedActive, Activities of other holding companies n.e.c., Havant, United Kingdom
- Quantum Origine Estate LtdActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Origine LtdActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Ortho LimitedActive, Dental practice activities, Bristol, United Kingdom
- Quantum Ortopédicos, ldaActive, Coimbra, Portugal
- Quantum OutdoorsActive, Haryana, India
- Quantum Outdoors India Private LimitedActive, Haryana, since 2024
- Quantum Overseas LLPActive, Gujarat
- Quantum Oxigeno Genai Private LimitedActive, Telangana, since 2025
- Quantum P2X LLPActive, Karnataka, since 2026
- Quantum Pacific (Gibraltar) LimitedActive, Gibraltar, Gibraltar
- Quantum Pacific (UK) LLPActive, London, United Kingdom
- Quantum Pacific Corporation UK LimitedActive, Activities of other holding companies n.e.c., London, United Kingdom
- Quantum Pacific Finance Holding LimitedActive, Road Town, British Virgin Islands
- Quantum Pacific International LimitedActive, Road Town, British Virgin Islands
- Quantum Pacific Management LimitedActive, Limassol, Cyprus
- Quantum Pacific Projects Private LimitedActive, Chandigarh, since 2005
- Quantum Pacific Solutions LtdActive, Other business support service activities n.e.c., Ewloe, United Kingdom
- Quantum Pacific Trading & Investment Pvt.ltd.Active, West Bengal, since 1995
- Quantum Packaging LimitedActive, Other manufacturing n.e.c., Musselburgh, United Kingdom
- Quantum Packaging Private LimitedActive, Chandigarh, since 1999
- Quantum Padel Leeds LtdActive, Operation of sports facilities, Otley, United Kingdom
- Quantum Padel LtdActive, Operation of sports facilities, Otley, United Kingdom
- Quantum Page Private LimitedActive, Uttar Pradesh, since 2011
- Quantum Palace LtdActive, Data processing, hosting and related activities, London, United Kingdom
- Quantum Panda LimitedActive, Information technology consultancy activities, Leatherhead, United Kingdom
- Quantum Paradigm Entertainment LimitedActive, Motion picture production activities, London, United Kingdom
- Quantum Paradigm Private LimitedActive, Haryana, since 2026
- Quantum Parallel Partners V-C, LPActive, Dover, United States
- Quantum Parent LimitedActive, Activities of other holding companies n.e.c., Nottingham, United Kingdom
- Quantum Parity Fund SPCActive, George Town, Cayman Islands
- Quantum Park Homes LtdLiquidation, Other service activities n.e.c., Milton Keynes, United Kingdom
- Quantum Park ŁÓDŹ Spółka Z Ograniczoną OdpowiedzialnościąActive, Warszawa, Poland
- Quantum Parktech LLPActive, Tamil Nadu
- Quantum Participations SLActive, Madrid, Spain
- Quantum Particle Trading LimitedActive, Take-away food shops and mobile food stands, Bagshot, United Kingdom
- Quantum PartnerActive, Nice, France
- Quantum Partners (Consulting) LLPActive, Newbury, United Kingdom
- Quantum Partners GmbHActive, Gräfelfing, Germany
- Quantum Partners Inc LtdActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Partners LimitedActive, Nassau, The Bahamas
- Quantum Partners LLPActive, since 2025
- Quantum Partners LPActive, George Town, Cayman Islands
- Quantum Partners OyActive, Helsinki, Finland
- Quantum Partners OÜActive, Tallinn, Estonia
- Quantum Partners, S. De R.L.Active, Panama, Panama
- Quantum Pasco Power, LPInactive, Plantation, United States
- Quantum Path Healing LtdActive, Other human health activities, Chatham, United Kingdom
- Quantum Path Labs Limited Liability Part NershipActive, Uttar Pradesh
- Quantum Pathology LLPActive, since 2023
- Quantum Pathology Services LimitedActive, General medical practice activities, London, United Kingdom
- Quantum Paul LtdActive, Business and domestic software development, Sutton, United Kingdom
- Quantum Pay LtdLiquidation, Other service activities n.e.c., London, United Kingdom
- Quantum Paymio Technologies Private LimitedActive, Karnataka, since 2023
- Quantum Payroll Services LtdActive, Other service activities n.e.c., Poole, United Kingdom
- Quantum Pays Private LimitedActive, Madhya Pradesh, since 2025
- Quantum PCS LtdActive, Retail sale via mail order houses or via Internet, Rochdale, United Kingdom
- Quantum Peak Holdings LimitedActive, Activities of other holding companies n.e.c., Hitchin, United Kingdom
- Quantum Peak LimitedActive, Information technology consultancy activities, Kent, United Kingdom
- Quantum Peak Marketing LtdActive, Advertising agencies, Birchington, United Kingdom
- Quantum Peak Private LimitedActive, Karnataka, since 2024
- Quantum Peak SPV IActive, George Town, Cayman Islands
- Quantum Peers Private LimitedActive, Tamil Nadu, since 2025
- Quantum Pension SchemeActive, Godalming, United Kingdom
- Quantum People Recruitment LtdActive, Other service activities n.e.c., London, United Kingdom
- Quantum People Staffing Service LimitedActive, Temporary employment agency activities, London, United Kingdom
- Quantum Performance Consultants LtdActive, Management consultancy activities other than financial management, Oldham, United Kingdom
- Quantum Performance Group LimitedActive, Fitness facilities, Haslemere, United Kingdom
- Quantum Performance LtdActive, Information technology consultancy activities, Royal Wootton Bassett, United Kingdom
- Quantum Performance Services LtdActive, Construction of commercial buildings, Cheltenham, United Kingdom
- Quantum Personal Computers LtdActive (proposal to strike off), Manufacture of consumer electronics, Ashington, United Kingdom
- Quantum Personal Ltd.Active, Development of building projects, London, United Kingdom
- Quantum Petrochemicals Private LimitedActive, Delhi, since 2016
- Quantum Petroleum LLPActive, London, United Kingdom
- Quantum Petroleum UK & Europe LtdActive, Wholesale of petroleum and petroleum products, Liverpool, United Kingdom
- Quantum Phantom LimitedActive, Management consultancy activities other than financial management, Bedford, United Kingdom
- Quantum Pharma 2014 LimitedActive, Activities of head offices, Bloomsbury, United Kingdom
- Quantum Pharma Consulting LimitedActive, Human resources provision and management of human resources functions, Uxbridge, United Kingdom
- Quantum Pharma Group LimitedActive, Activities of head offices, Bloomsbury, United Kingdom
- Quantum Pharma Holdings LimitedActive, Activities of head offices, Bloomsbury, United Kingdom
- Quantum Pharma PLC Employee Benefit TrustInactive, St Helier, Jersey
- Quantum Pharmaceuticalpharmaceutical industry, Burnopfield
- Quantum Pharmaceutical LimitedActive, Manufacture of pharmaceutical preparations, Burnopfield, United Kingdom
- Quantum Pharmaceutical Property Holdings LimitedActive, Buying and selling of own real estate, Glasgow, United Kingdom
- Quantum Pharmacy LtdActive, Dispensing chemist in specialised stores, Birmingham, United Kingdom
- Quantum Phase Six Ltd.Active, Other holiday and other collective accommodation, Tenbury Wells, United Kingdom
- Quantum Phinance Consulting Private LimitedActive, Maharashtra, since 2006
- Quantum Phynance Software Private Limite DStruck off, Maharashtra, since 2004
- Quantum Physics Corner LtdActive, Other research and experimental development on natural sciences and engineering, London, United Kingdom
- Quantum Pi LimitedActive, Retail sale via mail order houses or via Internet, Harrow, United Kingdom
- Quantum Pinnacle Ventures LimitedActive, Security dealing on own account, Bury St. Edmunds, United Kingdom
- Quantum Pixar AI LtdActive, Other software publishing, Sheffield, United Kingdom
- Quantum Pixel Enterprises LtdActive, Ready-made interactive leisure and entertainment software development, Fleetwood, United Kingdom
- Quantum Placements LimitedActive, Other business support service activities n.e.c., Wolverhampton, United Kingdom
- Quantum Plant LtdActive, Renting and leasing of construction and civil engineering machinery and equipment, Rugeley, United Kingdom
- Quantum Plastics & Master Batch Sa De CVActive, Atizipan De Zaragoza, Mexico
- Quantum Plastics, LLCActive, Elgin, United States
- Quantum PLM Private LimitedActive, Telangana, since 2025
- Quantum Plumbing & Heating LtdActive, Plumbing, heat and air-conditioning installation, Liverpool, United Kingdom
- Quantum Plus LimitedActive, Other business support service activities n.e.c., Timothy'S Bridge Road Stratford, United Kingdom
- Quantum Plus Ocean Corp LtdActive, Renting and leasing of passenger water transport equipment, London, United Kingdom
- Quantum Plus Technologies LLPActive, Delhi
- Quantum Plus Tradelinks Private LimitedStruck off, Delhi, since 2004
- Quantum PM LLPActive, Watford, United Kingdom
- Quantum PMC Private LimitedActive, Maharashtra, since 2023
- Quantum Point LtdActive, Buying and selling of own real estate, Wembley, United Kingdom
- Quantum Polymer India Private LimitedStruck off, Tamil Nadu, since 2012
- Quantum Portfolio Management LimitedActive, Dormant Company, Chorley, United Kingdom
- Quantum Potential LimitedActive, Other professional, scientific and technical activities n.e.c., Doncaster, United Kingdom
- Quantum Power Connections LimitedActive, Construction of utility projects for electricity and telecommunications, Stockton On Tees, United Kingdom
- Quantum Power Conversions Private LimitedActive, Karnataka, since 2010
- Quantum Power Dynamics LtdActive, Other research and experimental development on natural sciences and engineering, Taunton, United Kingdom
- Quantum Power Electrical LtdActive, Electrical installation, Ramsgate, United Kingdom
- Quantum Power Private LimitedActive, Uttar Pradesh, since 2026
- Quantum Power S.R.L - Start Up Innovativa A Vocazione SocialeActive, Portici, Italy
- Quantum Power Services LimitedActive, Other business support service activities n.e.c., Sidcup, United Kingdom
- Quantum Power Solutions LtdActive, Other business support service activities n.e.c., Paisley, United Kingdom
- Quantum Power SystemsBangalore
- Quantum Power SystemsActive, Bengaluru, India
- Quantum Power Tech Private LimitedStruck off, Delhi, since 2008
- Quantum Power Trading ApSActive, København, Denmark
- Quantum Power Transformation LimitedActive, Other engineering activities, Cambridge, United Kingdom
- Quantum Power West Lakes LimitedActive, Other business support service activities n.e.c., Cockermouth, United Kingdom
- Quantum PPF LtdActive, Other manufacturing n.e.c., Stockport, United Kingdom
- Quantum PR LimitedActive, Quantity surveying activities, Bromley, United Kingdom
- Quantum PR OÜActive, Tallinn, Estonia
- Quantum Practice LtdActive (proposal to strike off), Quantity surveying activities, Peterborough, United Kingdom
- Quantum Precision Engineering LimitedActive, Other engineering activities, Birmingham, United Kingdom
- Quantum Precision LLPActive, Birmingham, United Kingdom
- Quantum Precision Research LtdActive, Retail sale via mail order houses or via Internet, Huddersfield, United Kingdom
- Quantum Prime Advisors (OPC) Private LimitedActive, Haryana, since 2026
- Quantum Prime LtdActive, Other service activities n.e.c., London, United Kingdom
- Quantum Prime Services LtdActive, Management consultancy activities other than financial management, Potters Bar, United Kingdom
- Quantum Print and Packaging LimitedActive, Manufacture of other paper and paperboard containers, Wednesbury, United Kingdom
- Quantum Print Management LimitedActive, Printing n.e.c., Northfleet, United Kingdom
- Quantum Print Solutions LimitedActive, Printing n.e.c., Crowborough, United Kingdom
- Quantum Printech Private LimitedActive, Telangana, since 2026
- Quantum Printopack Private LimitedActive, Uttar Pradesh, since 2022
- Quantum Privacy and Risk Compliance LimitedActive (proposal to strike off), Other service activities n.e.c., New Eltham, United Kingdom
- QUANTUM Private Equity osoba rizikového kapitálu a.s.Active, Praha, Czech Republic
- Quantum Process Outsourcing Private LimitedStruck off, Tamil Nadu, since 2008
- Quantum Product Design LtdActive, Engineering related scientific and technical consulting activities, Bradford, United Kingdom
- Quantum Product Development LtdActive, Manufacture of other parts and accessories for motor vehicles, Derby, United Kingdom
- Quantum Production LimitedActive, Manufacture of electronic measuring, testing etc. equipment, not for industrial process control, Okehampton, Uni
- Quantum Professional Management Services P LtdStruck off, Tamil Nadu, since 1996
- Quantum Professional Services LimitedActive, Financial management, Berkhamsted, United Kingdom
- Quantum Profile Systems LimitedActive, Manufacture of builders ware of plastic, Oldham, United Kingdom
- Quantum Progress LimitedActive, Information technology consultancy activities, Halesworth, United Kingdom
- Quantum Project Control LtdActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Project Engineering Private Limi TedStruck off, Tamil Nadu, since 1996
- Quantum Project Logistics LLPActive, since 2024
- Quantum Project Management LtdActive (proposal to strike off), Development of building projects, Cardiff, United Kingdom
- Quantum Project Solutions LtdActive, Information technology consultancy activities, Huddersfield, United Kingdom
- Quantum Projectinfra Private LimitedActive, Maharashtra, since 2011
- Quantum Projects & Developers Private LimitedActive, Karnataka, since 2007
- Quantum Projects (Southern) LtdActive, Renting and leasing of construction and civil engineering machinery and equipment, Bournemouth, United Kingdom
- Quantum Projects LimitedActive, Other professional, scientific and technical activities n.e.c., North Yorkshire, United Kingdom
- Quantum Projects UK LimitedActive, Plumbing, heat and air-conditioning installation, Bedford, United Kingdom
- Quantum Projex LtdActive, Maintenance and repair of motor vehicles, Rotherham, United Kingdom
- Quantum Promotions LtdActive, Retail sale via mail order houses or via Internet, Ruislip,, United Kingdom
- Quantum Promotors and Developers Private LimitedStruck off, Maharashtra, since 2014
- Quantum Properties (Cheshire) LimitedActive, Other letting and operating of own or leased real estate, Stoke-On-Trent, United Kingdom
- Quantum Properties (UK) LimitedActive, Buying and selling of own real estate, Princes Risborough, United Kingdom
- Quantum Properties (York) LtdActive, Other letting and operating of own or leased real estate, York, United Kingdom
- Quantum Properties Group LimitedActive, Buying and selling of own real estate, Bromley, United Kingdom
- Quantum Properties, LLCActive, Huntington, United States
- Quantum Propertize LtdActive, Wired telecommunications activities, Liverpool, United Kingdom
- Quantum Property (UK) LimitedActive, Development of building projects, Nottingham, United Kingdom
- Quantum Property Acquisitions LtdActive, Activities of other holding companies n.e.c., Harrow, United Kingdom
- Quantum Property and Developments LtdActive, Other letting and operating of own or leased real estate, Doncaster, United Kingdom
- Quantum Property Consulting LimitedActive, Development of building projects, Tonbridge, United Kingdom
- Quantum Property Developments Ltd.Active, Development of building projects, Peterhead, United Kingdom
- Quantum Property Enterprises, LLCActive, Berea, United States
- Quantum Property Group LimitedActive, Other letting and operating of own or leased real estate, Maidenhead, United Kingdom
- Quantum Property Group Northwest LtdActive, Development of building projects, Stockport, United Kingdom
- Quantum Property Holdings LtdActive, Buying and selling of own real estate, Selkirk, United Kingdom
- Quantum Property Improvements (Scotland) LtdActive, Development of building projects, Glasgow, United Kingdom
- Quantum Property Improvements LtdActive, Repair of personal and household goods n.e.c., St. Ives, United Kingdom
- Quantum Property Investments LtdActive, Non-trading company, Rochford, United Kingdom
- Quantum Property Lettings LtdActive, Other letting and operating of own or leased real estate, Kettering, United Kingdom
- Quantum Property Maintenance LtdActive, Plastering, Grays, United Kingdom
- Quantum Property Management LtdActive, Buying and selling of own real estate, Edinburgh, United Kingdom
- Quantum Property One LtdActive, Other service activities n.e.c., Liverpool, United Kingdom
- Quantum Property PartnershipActive, London, United Kingdom
- Quantum Property Partnership (General Partner) LimitedActive, Development of building projects, London, United Kingdom
- Quantum Property Partnership (Nominee) LimitedActive, Development of building projects, London, United Kingdom
- Quantum Property Portfolios LtdActive, Other letting and operating of own or leased real estate, Warrington, United Kingdom
- Quantum Property Search LimitedActive, Real estate agencies, Exeter, United Kingdom
- Quantum Property Services LimitedActive, Buying and selling of own real estate, Pontyclun, United Kingdom
- Quantum Property Solutions LimitedActive, Other business support service activities n.e.c., London, United Kingdom
- Quantum Property Ventures LimitedActive, Other letting and operating of own or leased real estate, Wakefield, United Kingdom
- Quantum Propulsion Technologies LtdActive, Other research and experimental development on natural sciences and engineering, London, United Kingdom
- Quantum Prosit Private LimitedActive, Telangana, since 2008
- Quantum Prospect LtdActive, Satellite telecommunications activities, Glasgow, United Kingdom
- Quantum Prosthetics and Orthotics LimitedLiquidation, Dormant Company, Abingdon, United Kingdom
- Quantum Protect LtdActive, Activities of insurance agents and brokers, Newtownards, United Kingdom
- Quantum Protection LtdActive (proposal to strike off), Development of building projects, Cheshunt, United Kingdom
- Quantum Protocol Tech LimitedActive, Other software publishing, London, United Kingdom
- Quantum PT LtdActive, Physical well-being activities, Haywards Heath, United Kingdom
- Quantum Public Relations LimitedActive, Public relations and communications activities, Hawkinge, Folkestone, United Kingdom
- Quantum Publications Private LimitedStruck off, Maharashtra, since 2004
- Quantum Publishers LimitedActive, Book publishing, London, United Kingdom
- Quantum Publishing Solutions LtdActive, Other publishing activities, Carnforth, United Kingdom
- Quantum Pulse Consultants LtdActive, Other service activities n.e.c., Ruislip, United Kingdom
- Quantum Pulse Systems s.r.o.Active, Praha, Czech Republic
- Quantum Purple, LLCActive, Hallandale Beach, United States
- Quantum Pursuits (UK) LimitedActive, Other service activities n.e.c., Bolton, United Kingdom
- Quantum Q Systems LimitedActive (proposal to strike off), Other business support service activities n.e.c., London, United Kingdom
- Quantum QB Fund LtdActive, Grand Cayman, Cayman Islands
- Quantum QB LtdActive, Fund management activities, London, United Kingdom
- Quantum QB Master Fund LtdActive, George Town, Cayman Islands
- Quantum Qosmos Club LLPActive, since 2024
- Quantum QP LimitedActive, Other professional, scientific and technical activities n.e.c., Northwich, United Kingdom
- Quantum QS Consultancy LimitedActive, Management of real estate on a fee or contract basis, London, United Kingdom
- Quantum QS LimitedActive, Quantity surveying activities, Manchester, United Kingdom
- Quantum QS Services LtdActive, Construction of roads and motorways, Barnsley, United Kingdom
- Quantum Quality Control LimitedActive, Other service activities n.e.c., Ascot, United Kingdom
- Quantum Quality ProductionsDissolved, video game industry
- Quantum Quality Solutions LimitedActive, Other engineering activities, Glossop, United Kingdom
- Quantum Quantity Surveying Services LtdActive, Quantity surveying activities, Wimborne, United Kingdom
- Quantum Quantity Surveyors LimitedLiquidation, Quantity surveying activities, Heskin, United Kingdom
- Quantum Quarters Estates Private LimitedActive, Madhya Pradesh, since 2025
- Quantum Quarters LtdActive, Development of building projects, Inverness, United Kingdom
- Quantum Quartz and Feldspar Solutions Private LimitedActive, Rajasthan, since 2024
- Quantum Qube CAV Master, LPActive, George Town, Cayman Islands
- Quantum Qube System Private LimitedActive, Karnataka, since 2025
- Quantum Quench Health Private LimitedActive, Maharashtra, since 2023
- Quantum Query Lab LtdActive, Other software publishing, Liverpool, United Kingdom
- Quantum Questt LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Quill Digital Private LimitedActive, Haryana, since 2022
- Quantum Quill Technologies LtdActive, Business and domestic software development, London, United Kingdom
- Quantum Quilting LimitedActive (proposal to strike off), Finishing of textiles, Fareham, United Kingdom
- Quantum Quip Sales Private LimitedActive, Haryana, since 2024
- Quantum Quirk (OPC) Private LimitedActive, Maharashtra, since 2026
- Quantum Quotient Soft LtdActive, Wholesale of computers, computer peripheral equipment and software, York, United Kingdom
- Quantum R&D Tax LtdActive, Tax consultancy, Worcester, United Kingdom
- Quantum Racing Services LimitedActive, Manufacture of other parts and accessories for motor vehicles, Pulborough, United Kingdom
- Quantum Radiodiagnostics LLPActive, since 2025
- Quantum Radiology LimitedActive, Hospital activities, Bolton, United Kingdom
- Quantum Raidotech Private LimitedActive, Maharashtra, since 2024
- Quantum Rainmaker Private LimitedActive, Maharashtra, since 1996
- Quantum Rakdong-Tintek Hydro Power Private LimitedStruck off, West Bengal, since 2010
- Quantum RANW Wohnen Deutschland GmbH & Co. geschlossene Investment-kommanditgesellschaftActive, Hamburg, Germany
- Quantum Ray LtdActive, Ready-made interactive leisure and entertainment software development, Bedford, United Kingdom
- Quantum Re NPL S.S.Active, Milano, Italy
- Quantum Re S.R.L.Active, Milano, Italy
- Quantum Re-Development and Infrastructure Projects Private LimitedStruck off, Maharashtra, since 2014
- Quantum Reach LtdActive, Business and domestic software development, Luton, United Kingdom
- Quantum Reach Marketing Agency LtdActive, Advertising agencies, Beaconsfield, United Kingdom
- Quantum Reach Solutions LtdActive (proposal to strike off), Business and domestic software development, Bolton, United Kingdom
- Quantum Reach Traders LtdActive, Retail sale of flowers, plants, seeds, fertilizers, pet animals and pet food in specialised stores, London, Unit
- Quantum Reactivity LtdActive, Other research and experimental development on natural sciences and engineering, Thame, United Kingdom
- Quantum Readiness Company LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Ready LimitedActive, Business and domestic software development, Guildford, United Kingdom
- Quantum Real Estate and Property Development (India) Private LimitedActive, Maharashtra, since 2006
- Quantum Real Estate Asset Management LimitedActive, Real estate agencies, London, United Kingdom
- Quantum Real Estate LimitedActive, Buying and selling of own real estate, Birmingham, United Kingdom
- Quantum Real Estate Partners LtdActive, Fund management activities, London, United Kingdom
- Quantum Real Estate Systems LLPActive, Gujarat
- Quantum Realm LimitedActive, Road Town, British Virgin Islands
- Quantum Realm LtdActive, Management consultancy activities other than financial management, Glasgow, United Kingdom
- Quantum Realtech LLPStruck off, Delhi
- Quantum Realtech Private LimitedActive, Delhi, since 1996
- Quantum Realtors Private LimitedStruck off, Maharashtra, since 2007
- Quantum Realty Group LtdActive (proposal to strike off), Buying and selling of own real estate, Barking, United Kingdom
- Quantum Realty Homes Private LimitedActive, Telangana, since 2025
- Quantum Realty LLPActive, Harrow, United Kingdom
- Quantum Realty Private LimitedActive, Maharashtra, since 2006
- Quantum Recall LtdActive (proposal to strike off), Information technology consultancy activities, Bracknell, United Kingdom
- Quantum Recruitment Services LtdActive, Management consultancy activities other than financial management, Hertfordshire, United Kingdom
- Quantum Recruitment Solutions LtdActive, Other activities of employment placement agencies, London, United Kingdom
- Quantum Recycling Facility Private LimitedActive, Telangana, since 2021
- Quantum Red Minerals LLPActive, Gujarat
- Quantum Redevelopments LtdActive, Buying and selling of own real estate, London, United Kingdom
- Quantum Refurbishment & Maintenance LtdActive (proposal to strike off), Plumbing, heat and air-conditioning installation, Doncaster, United Kingdom
- Quantum Remap LtdActive, Retail trade of motor vehicle parts and accessories, Harrow, United Kingdom
- Quantum Remedies Private LimitedAmalgamated, Karnataka, since 2008
- Quantum Removals LtdActive, Collection of non-hazardous waste, Edgware, United Kingdom
- Quantum Renewable Energy Agencies Privat E LimitedStruck off, Rajasthan, since 2010
- Quantum Renewable Innovation LimitedActive, Manufacture of other special-purpose machinery n.e.c., Chichester, United Kingdom
- Quantum Renewable Power Private LimitedActive, Tamil Nadu, since 2021
- Quantum Renewable Solutions LtdActive, Electrical installation, Crewkerne, United Kingdom
- Quantum Renewables LtdActive, Electrical installation, Bridgend, United Kingdom
- Quantum Renewables NW LtdActive (proposal to strike off), Plumbing, heat and air-conditioning installation, Warrington, United Kingdom
- Quantum Rentals LimitedActive, Management of real estate on a fee or contract basis, Tidworth, United Kingdom
- Quantum Research & Design LimitedActive, Other research and experimental development on natural sciences and engineering, Congleton, United Kingdom
- Quantum Research & Management LimitedActive, Other information technology service activities, Wakefield, United Kingdom
- Quantum Research & Valuation LimitedActive, Management consultancy activities other than financial management, Leeds, United Kingdom
- Quantum Research Systems Private LimitedStruck off, Maharashtra, since 2010
- Quantum Reserish Private LimitedActive, Bihar, since 2025
- Quantum Reserve AgActive, Zug, Switzerland
- Quantum Reserve Energy Private LimitedStruck off, Telangana, since 2016
- Quantum Reserve LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Reservoir Impact, LLCActive, Wilmington, United States
- Quantum Residential Property LLPLiquidation, London, United Kingdom
- Quantum Residential Recovery Limited PartnershipActive, Fulham, United Kingdom
- Quantum Residential Services LimitedActive, Activities of other holding companies n.e.c., Henley-On-Thames, United Kingdom
- Quantum Residentials LimitedActive, Buying and selling of own real estate, Middlesex, United Kingdom
- Quantum Resilience LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Resin Co. LtdActive, Other letting and operating of own or leased real estate, Llanharan, United Kingdom
- Quantum Resolve LimitedActive, Dormant Company, Eastleigh, United Kingdom
- Quantum Resonance Technologies LimitedActive, Other research and experimental development on natural sciences and engineering, Pewsey, United Kingdom
- Quantum Resource Management (OPC) Private LimitedActive, Maharashtra, since 2022
- Quantum Resource Solutions LtdActive, Other activities of employment placement agencies, Cheadle, United Kingdom
- Quantum Resources A1, LPActive, Dover, United States
- Quantum Resources B, LPActive, Dover, United States
- Quantum Resources C, LPActive, Dover, United States
- Quantum Resources Group LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Resources LLPActive, Maharashtra
- Quantum Resourcing Services Private LimitedActive, Maharashtra, since 2011
- Quantum Response Network LimitedActive, Other activities of employment placement agencies, Thame, United Kingdom
- Quantum Restaurants, LLCActive, Wilmington, United States
- Quantum Retail S.R.L. Societa' BenefitActive, Milano, Italy
- Quantum Retail Trading LtdActive, Retail sale in non-specialised stores with food, beverages or tobacco predominating, Brentwood, United Kingdom
- Quantum Retails LimitedActive, Other retail sale not in stores, stalls or markets, Leicester, United Kingdom
- Quantum Retirement Benefit FundActive, Road Town, British Virgin Islands
- Quantum Return International LimitedActive, Road Town, British Virgin Islands
- Quantum Returns LtdActive, Renting and leasing of cars and light motor vehicles, Nelson, United Kingdom
- Quantum Revival LtdActive, Information technology consultancy activities, Kington, United Kingdom
- Quantum Rex S.R.L.Active, Roman, Romania
- Quantum Ridge Capital Advisors, LLCActive, Plymouth, United States
- Quantum Ridge Capital Partners, L.P.Active, Dover, United States
- Quantum Ridge Partners LimitedActive, Management consultancy activities other than financial management, Mildenhall, United Kingdom
- Quantum Ridge Solutions LtdActive, Information technology consultancy activities, Luton, United Kingdom
- Quantum Rift LtdActive, Publishing of computer games, Hereford, United Kingdom
- Quantum Rise LLPActive, Jharkhand
- Quantum Rise Talent Group LtdActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Rise X LimitedActive, Business and domestic software development, Manchester, United Kingdom
- Quantum Rise, Inc.Active, Wilmington, United States
- Quantum Rise, osoba rizikového kapitálu s.r.o.Active, Praha 5, Czech Republic
- Quantum Risk Consultancy LimitedActive, Other service activities n.e.c., Barnet, United Kingdom
- Quantum Risk Solutions LimitedActive, Information technology consultancy activities, Wakefield, United Kingdom
- Quantum Roofing LtdActive, Roofing activities, Bromsgrove, United Kingdom
- Quantum Roofing SW LimitedActive, Roofing activities, Ivybridge, United Kingdom
- Quantum Root LtdActive, Business and domestic software development, Manchester, United Kingdom
- Quantum RR LtdActive, Business and domestic software development, Darlington, United Kingdom
- Quantum RS LtdActive (proposal to strike off), Business and domestic software development, London, United Kingdom
- Quantum Rubber LimitedActive, Retail sale via mail order houses or via Internet, Keighley, United Kingdom
- Quantum S.A.Active, Luxembourg, Luxembourg
- Quantum S.R.L.Active, Milano, Italy
- Quantum Safe AI LimitedActive, Business and domestic software development, Reading, United Kingdom
- Quantum Safeguard Security LimitedActive, Private security activities, Dundee, United Kingdom
- Quantum Safety Consultancy LtdActive, Management consultancy activities other than financial management, Newry, United Kingdom
- Quantum Safety LimitedActive, Management consultancy activities other than financial management, East Yorkshire, United Kingdom
- Quantum Safety Network Pte. Ltd.Active, Singapore, Singapore
- Quantum Saga LtdActive, Publishing of computer games, Bolton, United Kingdom
- Quantum Sales & Marketing Services LtdActive, Management consultancy activities other than financial management, Christchurch, United Kingdom
- Quantum Sales Agencies Private LimitedActive, West Bengal, since 2008
- Quantum Sales and Marketing Ni LimitedActive (proposal to strike off), Advertising agencies, Belfast, United Kingdom
- Quantum Sales LimitedActive, Management consultancy activities other than financial management, High Peak, United Kingdom
- Quantum Salisbury Centre LLPActive, Corsham, United Kingdom
- Quantum Salve Investment LimitedActive, Road Town, British Virgin Islands
- Quantum Satis B.V.Active, Bunschoten-Spakenburg, Kingdom of the Netherlands
- Quantum Scaff UK LtdActive, Scaffold erection, Keighley, United Kingdom
- Quantum Scale Systems Private LimitedActive, Maharashtra, since 2026
- Quantum Scaling LtdActive, Public relations and communications activities, Cambridge, United Kingdom
- Quantum Scalpel Healthcare Services Private LimitedActive, Telangana, since 2025
- Quantum Scholars LimitedActive, Non-trading company, Manchester, United Kingdom
- Quantum School of Technology LtdActive, First-degree level higher education, Rainham, United Kingdom
- Quantum SciActive, Paris, France
- Quantum Science & Technology Private LimitedActive, Haryana, since 2026
- Quantum Science CorporationActive, 24 Chester Row, United Kingdom
- Quantum Science LtdActive, Manufacture of other chemical products n.e.c., Daresbury, United Kingdom
- Quantum Scientific Advisory and Consulting LtdActive, Research and experimental development on biotechnology, Walsall, United Kingdom
- Quantum Scio Wellness LimitedActive (proposal to strike off), Other business support service activities n.e.c., Monmouth, United Kingdom
- Quantum Scribe LtdActive, Other professional, scientific and technical activities n.e.c., London, United Kingdom
- Quantum Search Group LimitedActive, Other activities of employment placement agencies, Sale, United Kingdom
- Quantum Search LimitedInactive, Essex, United Kingdom
- Quantum Search Partners LimitedActive, Other activities of employment placement agencies, Southend On Sea, United Kingdom
- Quantum Search Solutions LimitedActive, Other activities of employment placement agencies, Birmingham, United Kingdom
- Quantum Seating LimitedActive, Other manufacturing n.e.c., Coventry, United Kingdom
- Quantum Secret LimitedActive, Engineering related scientific and technical consulting activities, Bury St. Edmunds, United Kingdom
- Quantum Secretarial Services LimitedActive, Accounting and auditing activities, Grimsby, United Kingdom
- Quantum Secure Encryption Corp
- Quantum Secure Encryption Corp.Active, Vancouver, Canada
- Quantum Secure Energies LimitedActive, Engineering design activities for industrial process and production, Caterham, United Kingdom
- Quantum Secure LimitedActive, Other professional, scientific and technical activities n.e.c., Blackburn, United Kingdom
- Quantum Securities LimitedActive, Buying and selling of own real estate, London, United Kingdom
- Quantum Securities Private LimitedActive, Delhi, since 1992
- Quantum Securities Private LimitedStruck off, Karnataka, since 1994
- Quantum SecurityActive, Beringen, Belgium
- Quantum Security and Pi Services LimitedActive, Private security activities, Belfast, United Kingdom
- Quantum Security Consultants LtdActive, Business and domestic software development, London, United Kingdom
- Quantum Security Defence LimitedActive, Publishing of learned journals, Ipswich, United Kingdom
- Quantum Security Group LtdActive, Private security activities, Crawley, United Kingdom
- Quantum Security LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Security Services LtdActive (proposal to strike off), Renting and leasing of cars and light motor vehicles, Dewsbury, United Kingdom
- Quantum Security Solution Private LimitedStruck off, Haryana, since 2014
- Quantum Security Solutions LtdActive, Security systems service activities, Leicester, United Kingdom
- Quantum Seduction LtdActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Select International Private LimitedActive, Maharashtra, since 2013
- Quantum Senses Private LimitedActive, Maharashtra, since 2026
- Quantum Sensors LimitedActive, Other professional, scientific and technical activities n.e.c., Witney, United Kingdom
- Quantum Sentinel LimitedActive, Business and domestic software development, London, United Kingdom
- Quantum Sentry India Private LimitedActive, Andhra Pradesh, since 2020
- Quantum Sequence Generator LtdActive, Information technology consultancy activities, London, United Kingdom
- Quantum Serve AI LimitedActive, Information technology consultancy activities, London, United Kingdom
- Quantum Service Insights LtdActive, Management consultancy activities other than financial management, Chadwell Heath, United Kingdom
- Quantum Servicegoods Private LimitedStruck off, Delhi, since 2013
- Quantum ServicesActive, Paal, Belgium
- Quantum Services (London) LimitedActive, Other professional, scientific and technical activities n.e.c., Lytham St. Annes, United Kingdom
- Quantum Services (QS) LtdActive, Quantity surveying activities, London, United Kingdom
- Quantum Services (UK) LimitedActive, Management of real estate on a fee or contract basis, London, United Kingdom
- Quantum Services Group LtdActive, Combined facilities support activities, Hartley Wintney, United Kingdom
- Quantum Services LimitedActive, Gibraltar, United Kingdom
- Quantum Services Management LtdActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Services Private LimitedActive, Karnataka, since 2003
- Quantum Servizi Pubblica Amministrazione Locale S.R.L. in Forma Abbreviata Quantum Spal S.R.L.Active, Battipaglia, Italy
- Quantum Servo Pumping Technologies Pty LtdActive, Melbourne, Australia
- Quantum Settlements LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Seven Holding LimitedActive, Buying and selling of own real estate, Coventry, United Kingdom
- Quantum Seven Law LimitedActive, Management consultancy activities other than financial management, Coventry, United Kingdom
- Quantum Sez Private LimitedStruck off, Maharashtra, since 2009
- Quantum Sharq Digital Systems Private LimitedActive, Tamil Nadu, since 2025
- Quantum She-E-O LtdActive, Other amusement and recreation activities n.e.c., Glasgow, United Kingdom
- Quantum SHI Management GmbHActive, München, Germany
- Quantum Shield Security LimitedActive, Information technology consultancy activities, Glasgow, United Kingdom
- Quantum Shield Software LtdActive, Business and domestic software development, London, United Kingdom
- Quantum Shift Global LtdActive, Other professional, scientific and technical activities n.e.c., Milton Keynes, United Kingdom
- Quantum Shift LimitedActive, Information technology consultancy activities, Hungerford, United Kingdom
- Quantum Shift Studios LtdActive, Ready-made interactive leisure and entertainment software development, London, United Kingdom
- Quantum Shipping & Logistics (India) LLPActive, Maharashtra
- Quantum Shipping Private LimitedStruck off, Maharashtra, since 1997
- Quantum Shipping Services LimitedActive, Sea and coastal freight water transport, United Kingdom
- Quantum Shop LtdActive, Retail sale via mail order houses or via Internet, London, United Kingdom
- Quantum Sight LtdActive, Information technology consultancy activities, Sunbury-On-Thames, United Kingdom
- Quantum Signal Chain Private LimitedActive, Maharashtra, since 2025
- Quantum SignalsActive, Paris, France
- Quantum Silicon Private LimitedActive, Karnataka, since 2025
- Quantum Simulators Private LimitedStruck off, Delhi, since 2012
- Quantum Singularity Consulting LtdActive, Other business support service activities n.e.c., Rowlands Gill, United Kingdom
- Quantum Singularity LimitedActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Singularity Nexus LtdActive, Business and domestic software development, Horndean Waterlooville, United Kingdom
- Quantum Site Services LimitedActive, Construction of other civil engineering projects n.e.c., Stainton, United Kingdom
- Quantum Six Consulting LimitedActive, Management consultancy activities other than financial management, Beaconsfield, United Kingdom
- Quantum Skill Lab LtdActive, Management consultancy activities other than financial management, London, United Kingdom
- Quantum Skill Solutions LimitedActive, Information technology consultancy activities, Essex, United Kingdom
- Quantum Skills Constructions LimitedActive, Development of building projects, Luton, United Kingdom
- Quantum Skills Development LtdActive, Other education n.e.c., London, United Kingdom
- Quantum Sky LtdActive, Business and domestic software development, Slough, United Kingdom
- Quantum Smart Health LLPStruck off, Maharashtra
- Quantum Smart Solutions LimitedActive, Wholesale of other machinery and equipment, Bournemouth, United Kingdom
- Quantum Smart Solutions LLPActive, Richmond, Canada
- Quantum Smartestate Private LimitedActive, Karnataka, since 2026
- Quantum SMT Technologies Private LimitedActive, Haryana, since 2012