| Capital Recoveries Limited | Northampton | 1995 |
| Capital Sky Enterprise Limited | London | 2009 |
| Capital Sky Properties Limited | Kings Langley | 2022 |
| Capital Sound Hire Limited | Solihull | 1989 |
| Capital Store Import and Export Co., Ltd | London | 2024 |
| Capital Support Group Limited | London | 2012 |
| Capital Surfacing Limited | High Wycombe | 2021 |
| Capital TEC Co., Ltd | Beckenham | 2016 |
| Capital Tenures Limited | London | 1998 |
| Capital United Limited | Harrogate | 2025 |
| Capital Water Services Limited | London | 2009 |
| Capitalguard Advisory Ltd | London | 2026 |
| Capitalharbor Consultancy Ltd | London | 2026 |
| Capitalpulse Finance Solutions Ltd | London | 2026 |
| Capitalway for Investment & Trading Limited | Manchester | 2026 |
| Capitano Group Ltd | Liverpool | 2025 |
| Capitar Enterprise Limited | Middlesbrough | 2013 |
| Capitas Vehicle Finance Limited | Farnham | 2007 |
| Capitis Consulting Limited | Watford | 2013 |
| Capitolia Automotive Ltd | Feltham | 2016 |
| Caple Appliances Ltd | Bristol | 1980 |
| Caple Ireland Ltd | Belfast | 2025 |
| Caple Road Limited | London | 2022 |
| Caple Sinks Ltd. | Bristol | 1973 |
| Caplyn Limited | Glasgow | 2013 |
| Capmedical (UK) Ltd | Godalming | 2019 |
| Capodonico Investments Ltd | London | 2024 |
| Cappagh Heights Management Company Limited | | 2003 |
| Cappagh Limited | Coleraine | 2012 |
| Cappagh More Court Management Limited | Portstewart | 2008 |
| Capper (Fuels) Limited | Co Tyrone | 1988 |
| Capper Transport Limited | Co Tyrone | 1978 |
| Cappro Limited | Cheshire | 2004 |
| Cappropone Limited | Canterbury | 2013 |
| Cappuccino Rose Weddings Ltd | Poole | 2022 |
| Caprese Consulting Limited | Honiton | 2015 |
| Capriccio Express Limited | Penrith | 2012 |
| Capriccio Temple Fortune Limited | London | 2011 |
| Caprice International Limited | London | 2024 |
| Caprice Ventures Limited | Woodbridge | 2024 |
| Capricorn Contracts Limited | Solihull | 2010 |
| Capricorn Financial Consultancy Limited | Hammersmith | 2008 |
| Capricorn One Ltd | South Shields | 2020 |
| Caprisol Investments Limited | London | 1980 |
| Capstan Travel Limited | Plymouth | 1969 |
| Capstar Partners UK Limited | Farnham | 2014 |
| Capsticks Limited | London | 2008 |
| Capstone Estate Management Limited | Belfast | 2024 |
| Capsulcn International Co., Ltd | England | 2018 |
| Captain Clareways Ltd | Bexhill On Sea | 2012 |
| Captain Concrete Ltd | Stowmarket | 2016 |
| Captain Cook's Haven Limited | Fylingthorpe | 2000 |
| Captain Cooks Homestore Limited | Gateside Road Coleraine | 1986 |
| Captain Cover Limited | Sheffield | 2005 |
| Captain Group Co., Ltd | Londo | 2019 |
| Captain Jack Sparrow Limited | Hitchin | 2013 |
| Captain Limited | Cardiff | 2015 |
| Captain Vend Ltd | Chesterfield | 2025 |
| Captcha Ltd | Worthing | 2010 |
| Captian Holding Company Limited | Stafford, | 2015 |
| Captis Solutions Limited | Highbridge | 2008 |
| Captuayr Limited | Ayr | 2019 |
| Captura Automotive Ltd | Macclesfield | 2012 |
| Capture the Day Photography Limited | Brough | 2016 |
| Capus (Exports) Limited | Wolverhampton | 1983 |
| Capus Limited | Willenhall | 1994 |
| Car & Commercial Sales Limited | Croydon | 1991 |
| Car and Consulting Ltd | London | 2025 |
| Car and Van Hire Wrexham Limited | Wrexham | 2013 |
| Car Benefit Energy Finance Limited | Bury | 2003 |
| Car Booters Club Ltd | Worcester | 2002 |
| Car Care Centre (Ayrshire) Limited | Kilmarnock | 2014 |
| Car Classic's & Storage Limited | Barnsley | 2020 |
| Car Clean Club Limited | London | 2016 |
| Car Collection and Delivery UK Ltd | Ayr | 2024 |
| Car Deal Cloud Limited | Broxburn | 2010 |
| Car Deal Warehouse Limited | Broxburn | 2008 |
| Car Exporter Limited | Wolverhampton | 2012 |
| Car Loan 4U Limited | Macclesfield | 2015 |
| Car Loft Limited | Horsham | 2022 |
| Car Marks Limited | Preston | 1998 |
| Car Moving Guys Limited | Toddington | 2021 |
| Car Numbers Limited | Preston | 1998 |
| Car Plates Limited | Preston | 1998 |
| Car Profiler Limited | Norwich | 2016 |
| Car Recovery Ltd | Sutton | 2022 |
| Car Registrations Limited | Preston | 1998 |
| Car Rental in Torrevieja Limited | London | 2024 |
| Car Shades Limited | Newark | 2015 |
| Car Shop (Scotland) Ltd | Glasgow | 2014 |
| Car Therapy Detailing Ltd | Castleford | 2020 |
| Car Wash Mobile Ltd | Bracknell | 2021 |
| CAR4CAR Limited | Pulborough | 2025 |
| CAR4YOU Invest Limited | London | 2022 |
| CAR4YOU Sweden Limited | London | 2022 |
| Cara Ltd | Dumfries | 2001 |
| Carabela Consultants Limited | Manchester | 2025 |
| Carabiner Limited | Cheadle | 2021 |
| Caractacus Limited | Carlisle | 2016 |
| Caraderm Limited | Newry | 1991 |