| Campfire Tattoo Ltd | Edinburgh | 2026 |
| Campgas Ltd | Warrington | 2017 |
| Camphill Grove Care Limited | Dundee | 2011 |
| Camphill Insurance Agency Limited | Milton Keynes | 2005 |
| Camphill Social Fund (N.I.) | Newry | 1968 |
| Camphill Social Fund Limited | Glasgow | 1985 |
| Camphora Wellbeing Limited | Maidstone | 2022 |
| Campion (UK) Limited | Bath | 2013 |
| Campion Court Management Company Limited | Henley-In-Arden | 1986 |
| Campion Gardens Care Home Limited | Swansea | 2001 |
| Campions Hairdressing (Mansfield) Ltd | Nottinghamshire | 2000 |
| Campions Ladies Limited | Mansfield | 2021 |
| Camplex Ltd | London | 2012 |
| Camplings Limited | Great Yarmouth | 1947 |
| Campo Holdings Limited | London | 2025 |
| Campos Declutter Solutions Ltd | Peterborough | 2025 |
| Campro-Ject Limited | Eastleigh | 2015 |
| Campsafe Ltd | Malton | 2025 |
| Campus Clippers Ltd | Birmingham | 2026 |
| Camputer Ltd | Cambridge | 2026 |
| Camran Barbers Ltd | St Helens | 2024 |
| Camrose Court Residents Association Limited | Purley | 2006 |
| Cams Cuts Ltd | Huddersfield | 2023 |
| Cams Fire & Security PLC | Stevenage | 1984 |
| Camscience Limited | Baldock | 2013 |
| Camserve Limited | Hellingly | 2010 |
| Camshine Limited | Cambridge | 2018 |
| Camshine Maintenance Limited | Cambridge | 2021 |
| Camson Ventures Ltd | Bexhill-On-Sea | 2026 |
| Camuscross & Duisdale Initiative | Isle Of Skye | 2008 |
| Camversation Online Limited | Faversham | 2025 |
| Camway (2021) Ltd | Stock Ingatestone | 2021 |
| Camway Facilities Maintenance Limited | Ingatestone | 1997 |
| Camway Installations Limited | Manchester | 2015 |
| Camway Resources Limited | Ingatestone | 2011 |
| CAN Associates Limited | Dunmow | 2002 |
| CAN CAN Quizzes Limited | Sidmouth | 2010 |
| CAN DO 247 Limited | London | 2020 |
| CAN Kani OZ Ltd | Orpington | 2023 |
| CAN PR Limited | Telford | 2012 |
| CAN Private Ltd | Woodford Green | 2022 |
| CAN Scorpions Smoke (CSS) Change and Creativity Limited | London | 2013 |
| CAN YOU Just Hold That Ltd | London | 2020 |
| Can&Company Limited | London | 2021 |
| Canaan International Limited | Hayes | 2025 |
| Canactive Limited | Cheltenham | 2019 |
| Canada Immigration Solutions Ltd | Lisburn | 2014 |
| Canada Waters Management Company (NO.2) Limited | Harrow | 1997 |
| Canada-United Kingdom Chamber of Commerce | London | 1927 |
| Canadian Conservatives Abroad | Stockport | 2020 |
| Canadian Solar Argentina Investment Holding Ltd | London | 2018 |
| Canal and Market Holdings Limited | London | 2018 |
| Canal Cottage Shropshire Ltd | Newport | 2026 |
| Canal Marine Services Limited | Chester | 1980 |
| Canals in Hackney Users Group | London | 1997 |
| Canalside Canines Ltd | Oldham | 2025 |
| Canalside Heritage Centre | Nottingham | 2011 |
| Canalside Residents Association CIC | Neath | 2020 |
| Canan Beauty Ltd | London | 2020 |
| Canary & Cat Limited | London | 2025 |
| Canary & Heron Ltd | London | 2019 |
| Canary Clifton DRY Cleaners Ltd | London | 2019 |
| Canary Consulting Limited | Canary Wharf | 2022 |
| Canary CVS Ltd | London | 2020 |
| Canary Fine London Jewellery Ltd | London | 2015 |
| Canary Hair and Beauty Ltd | London | 2025 |
| Canary Nails Spa Ltd | Luton | 2025 |
| Canary Riverside Car Park Ltd | Wembley | 2021 |
| Canary Wharf (T) Hairdressing Limited | Alton | 1999 |
| Canary Wharf Multifaith Chaplaincy Limited | London | 2019 |
| Canary Wharf Personal Training & Physiotherapy Ltd | London | 2020 |
| Canary Wharf Social Development Organisation | London | 2023 |
| Canarybox Limited | Ilford | 2022 |
| Canaryone Enterprises Limited | Ilford | 2022 |
| Canavan Consultancy Ltd | Bristol | 2022 |
| Canavan Consulting Limited | London | 2018 |
| Canbarber Ltd | Orpington | 2025 |
| Canbury Works Limited | Kingston Upon Thames | 2016 |
| Cancer Active | Towcester | 2003 |
| Cancer AID and Listening Line Limited | Manchester | 2011 |
| Cancer and Polio Research Fund Limited | Liverpool | 1962 |
| Cancer Relief UK | Chesterfield | 2008 |
| Cancer Support Service Limited | Lymington | 2024 |
| Cancun Sun Ltd | Horsham | 2024 |
| Candacraig Enterprises Limited | Strathdon | 2014 |
| Candan Food Centre Ltd | London | 2012 |
| Candan NC Ltd | London | 2023 |
| Candela Couture Ltd | Halesowen | 2023 |
| Canderside Services Ltd | Glasgow | 2014 |
| Canderson Ltd | Barrow-In-Furness | 2003 |
| Candescent Women Ltd | London | 2020 |
| Candice Films Limited | London | 2024 |
| Candid Auto Recovery and Repairs Services Ltd | London | 2017 |
| Candid Conversation Coaching Ltd | London | 2022 |
| Candid Data Services Ltd | Birmingham | 2021 |
| Candid Life Limited | London | 2005 |
| Candisecolours Ltd | London | 2024 |
| Candiva Enterprises Limited | Darlington | 2019 |
| Candle Knights Ltd | Wrexham | 2020 |
| Candle Light Gardens Ltd | Grimsby | 2019 |