| Capital Choice Healthcare Limited | Colchester | 2020 |
| Capital Clinic Limited | Glasgow | 2015 |
| Capital Dental Ltd | London | 2022 |
| Capital EAR Care Ltd | London | 2019 |
| Capital EAR WAX Removal Limited | Porthcawl | 2024 |
| Capital Foot and Ankle Limited | Wilmslow | 2023 |
| Capital Grid Design Ltd | Stockton-On-Tees | 2024 |
| Capital Healthcare Limited | Birmingham | 2020 |
| Capital Healthcare Services Ltd | Ruislip, | 2023 |
| Capital Kids Cricket | London | 1996 |
| Capital London Care Ltd | New Malden | 2023 |
| Capital Manchester Private Ltd | Manchester | 2014 |
| Capital MED Limited | Southampton | 2020 |
| Capital Medical Consulting Ltd | Lincoln | 2011 |
| Capital Medicare Limited | London | 2015 |
| Capital Orthopaedics & Sports Medicine Limited | Addlestone | 2016 |
| Capital Paediatric Anaesthesia Limited | Worcester Park | 2014 |
| Capital Plastic Surgery Limited | Tunbridge Wells | 2015 |
| Capital Project Trust | London | 2001 |
| Capital Prosthetics Laboratory Limited | Penarth | 2002 |
| Capital Psychology Limited | London | 2018 |
| Capital Social Work Services Limited | London | 2022 |
| Capitate Ltd | Belfast | 2024 |
| Capiteous Ltd | London | 2020 |
| Capithera Limited | London | 2011 |
| Capitol Clinic Limited | Barnsley | 2009 |
| Capitol Hill Ltd | Stoke-On-Trent | 2023 |
| Capitol Medicare Limited | Harrow | 2018 |
| Caplan Medical Ltd | London | 2025 |
| Caplani Ltd | Edinburgh | 2026 |
| Capmed Diagnostics Limited | Kington | 2025 |
| Capnotrainer Ltd | London | 2023 |
| Capodi Caring Services Limited | London | 2021 |
| Capozzi Health Ltd | Chichester | 2026 |
| Cappella Chaplaincy Ltd | Birmingham | 2024 |
| Capri Aesthetics Ltd | Huddersfield | 2025 |
| Capri Care Services Ltd | Nottingham | 2022 |
| Capricorn Care NW Ltd | Liverpool | 2024 |
| Capricorn N VAL Ltd | Le5 1Lx | 2019 |
| Capriol Ltd | Southampton | 2014 |
| Caps Medical Ltd | Manchester | 2007 |
| Capscan Imaging Ltd | Borehamwood | 2023 |
| Capsey Clinical Communications Limited | Bicester | 2015 |
| Capstone Bond Ltd | Cardiff | 2023 |
| Capstone Care Homes Ltd | London | 2024 |
| Capstone Care Limited | Bury | 1997 |
| Capstone Care Provider Limited | London | 2007 |
| Capstone Foster Care (North) Limited | Worcestershire | 2004 |
| Capstone Foster Care (South East) Limited | Worcestershire | 2002 |
| Capstone Foster Care (South West) Limited | Worcestershire | 2001 |
| Capstone Foster Care Limited | Worcestershire | 2007 |
| Capstone Healthcare Limited | Croydon | 2014 |
| Capstone Helpers Limited | Rochester | 2022 |
| Capstone Medical Ltd | London | 2021 |
| Capstone Pharma Ltd | Sheffield | 2023 |
| Capstone Pharmaco Limited | Chelmsford | 2006 |
| Capstone Therapeutic Care (Midlands) Limited | Stoke Prior | 2024 |
| Capstone Therapeutic Homes Limited | Stoke Prior | 2024 |
| Capsula Care Ltd | London | 2023 |
| Captain Cares Limited | Romford | 2016 |
| Captain Consulting (UK) Limited | Orpington | 2010 |
| Captain Digital Healthcare UK Ltd | Croydon | 2023 |
| Captain Medic Limited | Ilford | 2019 |
| Captain Ted's Daycare Ltd | Newcastle Upon Tyne | 2025 |
| Captain Zimbabwe Ltd | Leicester | 2025 |
| Captainfoday Limited | London | 2014 |
| CAPTAINWHITE247 Limited | Carlisle | 2025 |
| CAPTIV8 Life Ltd | Aylesbury | 2024 |
| Capttopt Ltd | Woking | 2021 |
| Capture Health Limited | High Wycombe | 2015 |
| Captured Thoughts CBT Ltd | London | 2026 |
| Capturing Hearts Castings Ltd | Oxford | 2022 |
| Capua Care Ltd | Scunthorpe | 2025 |
| Caputo Ltd | London | 2025 |
| Capybara Imaging Limited | Newcastle Upon Tyne | 2024 |
| Car&Mar Ltd | Chesterfield | 2019 |
| Car-T Lymphoma London Ltd | London | 2022 |
| Cara Caring Services Limited | Brentwood | 2017 |
| Cara Green Limited | Brentwood | 2018 |
| Cara Marshall Hypnotherapy Ltd | Bedford | 2026 |
| Cara Mcilroy Ltd | Belfast | 2025 |
| Cara MIA Spiritual Guidance Ltd | Bury St. Edmunds | 2018 |
| Cara Mitchell Dental Hygiene and Therapy Limited | Ely | 2012 |
| Cara Nursing Limited | Sale | 2023 |
| Cara's EAR Care Ltd | Pulborough | 2026 |
| Carabelli Dent Ltd | Rye | 2024 |
| Carabelli Ltd | London | 2024 |
| Carabian Care Ltd | Manchester | 2020 |
| Carabott & Davis Ltd | Witham | 2014 |
| Carada Ventures Ltd | Southampton | 2009 |
| Caradena Ltd | Cardiff | 2025 |
| Caradoc Care Ltd | Shrewsbury | 2019 |
| Caradon Healthcare Ltd | Norwich | 2021 |
| Caradon Physio and Wellness Centre Ltd | Saltash | 2003 |
| Caraidan Consulting Ltd | London | 2012 |
| Carajan Care Limited | London | 2021 |
| Caram (AH) Limited | Wolverhampton | 2002 |
| Caramel Care Services Limited | Aylesbury | 2026 |
| Carapace Heart Services Limited | Derby | 2018 |
| Cararad Ltd | Purley | 2023 |