| Calton Care Glasgow Ltd | Stoke-On-Trent | 2025 |
| Calton House Ltd | Camborne | 2006 |
| Calton Ltd | Feltham | 2014 |
| Calton Systems Limited | Rochdale | 2010 |
| Calton Youth Ministry Trust | Edinburgh | 1992 |
| Calum Lyon Ltd | York | 2010 |
| Calvani Healthcare Ltd | Doncaster | 2022 |
| Calvary Care Homes Ltd | London | 2025 |
| Calvary Care Ltd | London | 2018 |
| Calvary Care Support Services Ltd | Luton | 2025 |
| Calvary Corporation Limited | London | 2013 |
| Calvary Healthcare Services Limited | Nottingham | 2019 |
| Calvary Healthcare Solutions Ltd | Coventry | 2015 |
| Calvary Ltd | London | 2015 |
| Calvary Medicare Services Ltd | Chatham | 2010 |
| Calvary Medics Ltd | Chatham | 2020 |
| Calvercare Limited | Borehamwood | 1994 |
| Calverley and Rawdon Acupuncture Clinic Limited | Leeds | 2017 |
| Calverton Pharmacy Limited | North Harrow | 2010 |
| Calverton Supreme Home Care Limited | Nottingham | 2003 |
| Calvin's Podiatry Clinic Ltd | Southampton | 2026 |
| Calytop Healthcare Limited | Harlow | 2023 |
| Calytz Imaging Limited | Harlow | 2020 |
| Calyx Care Group Limited | Leicester | 2026 |
| Calyx Medical Ltd | Grays | 2017 |
| Calyx Neurological Services (CNS) Limited | Norwich | 2018 |
| Calyx Support Services Ltd | Bradford | 2024 |
| Calyxco Ltd | Bournemouth | 2021 |
| Calzoni Limited | Stockport | 2025 |
| CAM 6 Limited | Edinburgh | 2018 |
| CAM Clinics Limited | St. Ives | 2014 |
| CAM DP Ltd | Dursley | 2021 |
| CAM Gray Support Services Ltd | Wolverhampton | 2022 |
| CAM Mackintosh Hypnotherapy Limited | London | 2026 |
| CAM Osteopathy Ltd | Cambridge | 2016 |
| CAM OT Services Limited | Amersham | 2011 |
| CAM Pathology Consultancy Ltd | Cambridge | 2019 |
| CAM Physio UK Ltd | Cambridge | 2016 |
| CAM Supported Living CIC | Wellingborough | 2019 |
| CAM Therapies Ltd | Stirling | 2026 |
| Cam's Therapy Solutions Ltd | Dulas | 2025 |
| Cam-Gray Health Care Professionals Ltd | Rotherham | 2018 |
| Cam-Mind Ltd | London | 2024 |
| Camac Care Services UK Ltd | London | 2016 |
| Camacel Limited | Sheerness | 2016 |
| Camanchi Care Limited | Hemel Hempstead | 2018 |
| Camara Care Services Ltd | Rainham | 2012 |
| Camarinal Holdings Limited | Milton Keynes | 2017 |
| Camaxiloo Limited | Orpington | 2023 |
| Camayan's Ltd | Basildon | 2022 |
| Camayd Ltd | Corby | 2016 |
| Camberdent Ltd. | Andover | 2009 |
| Camberley Care Limited | Harrow | 2014 |
| Camberley Chiropractic Clinic Limited | Bagshot | 2003 |
| Camberley Healthy Smile Limited | Camberley | 2017 |
| Camberley House Ltd | London | 2020 |
| Camberwell Community Project CIC | London | 2024 |
| Cambeth Community Project C.I.C. | Doncaster | 2020 |
| Cambian Childcare Limited | Uxbridge | 2001 |
| Cambian Signpost Limited | Uxbridge | 2007 |
| Cambio Counselling Limited | Leeds | 2015 |
| Cambio Health Ltd | London | 2025 |
| Cambium Neurodiversity Group Ltd | London | 2025 |
| Cambodia Water Outcomes Partnership Limited | London | 2023 |
| Camborne Dental Practice Limited | Penryn | 2020 |
| Cambourne Dental Care Limited | Crawley | 2011 |
| Cambria Dental Practice Limited | Pen Y Fford | 2012 |
| Cambrian Care Consortium Limited | Tredegar | 2009 |
| Cambrian Housing Services (Wirral) Limited | Prenton | 2013 |
| Cambrian Interventions Ltd | Cardiff | 2025 |
| Cambrian Psychology Ltd | Llandeilo | 2018 |
| Cambrian Supported Living Limited | Prenton | 2004 |
| Cambridge & ELY Child Contact Centres Limited | Cambridge | 2011 |
| Cambridge Academic Performance Ltd | Ely | 2015 |
| Cambridge Acorn Project | Cambridge | 2014 |
| Cambridge Acumen Limited | Wilmslow | 2019 |
| Cambridge Aesthetics and Dental Hygiene Limited | Cambridge | 2024 |
| Cambridge Allergy Doctors Limited | Buntingford, Hertfordshire | 2023 |
| Cambridge Audiology Ltd | London | 2025 |
| Cambridge Avenue Medical Services Ltd | Scunthorpe | 2009 |
| Cambridge Blue Ltd | Cambridge | 2005 |
| Cambridge Breast Surgery Limited | Cambridge | 2017 |
| Cambridge Cardiac Surgery Limited | Cambridge | 2017 |
| Cambridge Cardiology Limited | Quorn | 2017 |
| Cambridge Cardiovascular Clinic Ltd | London | 2023 |
| Cambridge Care Company Limited | Bury St. Edmunds | 2008 |
| Cambridge Care Home Holdco Limited | London | 2024 |
| Cambridge Care Home Propco Limited | London | 2025 |
| Cambridge Care Homes Limited | | 2006 |
| Cambridge Care Solutions Ltd | Cambridge | 2023 |
| Cambridge CBT Limited | Willingham | 2010 |
| Cambridge Centre for Psychotherapy & Training Ltd | Cambridge | 2023 |
| Cambridge Chest Clinic Limited | Cambridge | 2025 |
| Cambridge Chest Ltd | Cambridge | 2019 |
| Cambridge Chest Meetings | Lincoln | 2018 |
| Cambridge Chiropody and Podiatry Limited | Cambridge | 2006 |
| Cambridge City 4 Primary Care Network Ltd | Cambridge | 2022 |
| Cambridge City PCN Ltd | Cambridge | 2026 |
| Cambridge Clear Beauty Limited | Witney | 2016 |
| Cambridge Clinic PVT Ltd | Slough | 2025 |