| Canoville Fitness Limited | Manchester | 2016 |
| Cans (2009) Limited | Beverley | 2009 |
| Cansel Holdings UK Limited | London | 2025 |
| Cansev Ltd | London | 2017 |
| Cant Fake the Feeling Limited | London | 2024 |
| Cantab Consultants Ltd | Hacheston, Woodbridge | 2012 |
| Canter Pet Care Services Ltd | London | 2023 |
| Canterbury Acupuncture Limited | Canterbury | 2012 |
| Canterbury Car Keys Ltd | Canterbury | 2026 |
| Canterbury Connected CIC | Canterbury | 2009 |
| Canterbury Cosmetics (UK) Ltd. | North Harrow | 2012 |
| Canterbury Counselling & Psychotherapy Centre Limited | Kingsbridge | 2003 |
| Canterbury DRY Cleaning Limited | Great Yarmouth | 2007 |
| Canterbury HCW Ltd | Canterbury | 2017 |
| Canterbury Medical Ltd | Canterbury | 2023 |
| Canterbury Rugby Supporters Club Limited | Canterbury | 2014 |
| Canterbury Tailoring & Alteration Services Ltd | Canterbury | 2023 |
| Canterneil Ltd | Westhill | 2023 |
| Canteron Property Ltd | Tiverton | 2022 |
| Canterstor Ltd | Hove | 2016 |
| Cantertech Limited | Solihull | 2014 |
| Cantium Cats Ltd | Tonbridge | 2021 |
| Cantley Barbers Limited | Doncaster | 2022 |
| Cantlon Martech Solutions Ltd | Rotherham | 2023 |
| Canto Shipping Ltd | London | 2025 |
| Cantonica Ltd | London | 2024 |
| Cantor Creative Ltd | London | 2018 |
| Cantour Cosmetics Limited | Brighton | 2021 |
| Cantref Teifi CYF | Castell Newydd Emlyn | 1987 |
| Cantybay Enterprises Limited | Edinburgh | 1993 |
| Canuck Capital Limited | London | 2017 |
| Canuta Consulting Ltd | London | 2024 |
| Canvas and Core Wellness Limited | London | 2025 |
| Canvas Art Limited | Angus | 2003 |
| Canvas Assistance Limited | London | 2025 |
| Canvas Beauty Bar Ltd | Newcastle Upon Tyne | 2022 |
| Canvas Concepts Ltd | London | 2024 |
| Canvas Earth Limited | Horwich, Bolton | 2025 |
| Canvas Equity Limited | London | 2020 |
| Canvas Nails Ltd | Brentwood | 2025 |
| Canvas Outfits Ltd | Dagenham | 2020 |
| Canvas Print Studio Limited | Edgware | 2015 |
| Canvas Your Crown Ltd | Dudley | 2025 |
| CANVAS10 Beauty Ltd | Bolton | 2023 |
| Canvass Consulting Ltd | Bristol | 2019 |
| Canvass Limited | Bridge Of Weir | 2005 |
| Canvey Commercial Laundry Limited | Canvey Island | 2012 |
| Canvey Hand Car Wash Ltd | Canvey Island | 2016 |
| Canvey Island Bindery Company Limited | Leigh On Sea | 2014 |
| Canvey Kehilla Ltd | Canvey Island | 2022 |
| Canvey Self Storage Limited | Canvey Island | 2016 |
| Canvey TAN Ltd | Benfleet | 2024 |
| Canview 1 Limited | Harrow | 2020 |
| Canwell Engineering Ltd | Llanfyllin | 2003 |
| Canwell Estate Company Limited(The) | Staffordshire | 1980 |
| CAO Family Limited | Enfield | 2024 |
| CAO HAN Ltd | Glasgow | 2026 |
| Caol Regeneration Company Limited | Fort William | 2005 |
| Caos IT Solutions Ltd | Whitehills Business Park | 2012 |
| CAP Property Services Ltd | West Wickham | 2017 |
| Capa Hair Studio Limited | Milton Keynes | 2010 |
| Capa Hair Systems Ltd | Milton Keynes | 2024 |
| Capa Valve Developments Limited | Hertford | 2025 |
| Capa Valve Limited | Hertford | 2012 |
| Capable Cleaners Ltd | Chatham | 2015 |
| Capacitate Plus Limited | Cullompton | 2017 |
| Capacity Capital Ltd | Potters Bar | 2020 |
| Capale Capital Ltd | London | 2025 |
| Capalert Ltd | Milton Keynes | 2024 |
| Capaz Contracting Services Ltd | Birmingham | 2018 |
| Capcir Consulting Limited | Norwich | 2019 |
| Capdrill UK Limited | London | 2021 |
| Cape Amethyst Ltd | Swaffham | 2012 |
| Cape and Cove Ltd | Torquay | 2020 |
| Cape Black Limited | Marlborough | 2025 |
| Cape Call Limited | Northwood | 2021 |
| Cape Hula Ltd | Manchester | 2020 |
| Cape Pembroke Limited | London | 2011 |
| Cape Trade Limited | Snodland | 2023 |
| Capehill Glamour Touch Hair & Beauty Ltd | Smethwick | 2014 |
| Capehouse Development Consultancy Ltd | Towcester | 2023 |
| Capel Carmel | Pwllheli | 2018 |
| Capel Garden Pots Limited | Tonbridge | 2024 |
| Capel Lodge(Trearddur Bay)Management Company Limited | Stockport | 1972 |
| Capel Rhondda Cyfyngedig | Pontypridd | 2025 |
| Capel Siriol Limited | Bridgend | 2017 |
| Capel Y Tabernacl, CYF. | Pontypridd | 2007 |
| Capell 770 Limited | London | 2024 |
| Capella Hairdressing Limited | Wokingham | 2009 |
| Capella Marine Services Ltd | Paignton | 2025 |
| Capelli & Company Limited | Wetherby | 2011 |
| Capelli (Chester LE Street) Limited | Gateshead | 2009 |
| Capelli (Radlett) Limited | Watford | 2012 |
| Capelli 2(NI) Ltd | Carrickfergus | 2016 |
| Capelli 82 Limited | Harrow | 2022 |
| Capelli Belli Limited | London | 2015 |
| Capelli Design Limited | Rossendale | 2018 |
| Capelli Group Ltd | Swindon | 2020 |
| Capelli Hair Collective Limited | Wetherby | 2026 |
| Capelli Hair Design Corbridge Ltd | Washington | 2011 |