| Camrad Ltd | Chester | 2024 |
| Cams Services Ltd | Greenford | 2025 |
| Camsk Imaging Ltd | Tewkesbury | 2026 |
| Camspar Ltd | Lincoln | 2019 |
| CAMTRIX277 Ltd | Leeds | 2022 |
| Camttec Healthcare Limited | Norwich | 2015 |
| Camu Clinics Ltd | London | 2023 |
| Camwood Healthcare Limited | Batley | 2023 |
| Camy Limited | Reading | 2017 |
| Camy MED Ltd | Aylesbury | 2016 |
| Camy Medical Ltd | Doncaster | 2012 |
| Camy Services Ltd | Stanmore | 2016 |
| Camyorkshire | Leeds | 2019 |
| Camz Medical Limited | Preston | 2015 |
| Camzam Health Care and Consulting Ltd | Bristol | 2018 |
| CAN Child Psychiatry Ltd | Newcastle Upon Tyne | 2025 |
| CAN DO Partnerships Ltd | Liverpool | 2024 |
| CAN I DO IT Myself Ltd | London | 2019 |
| CAN Scot Limited | Wellingborough | 2004 |
| CAN YOU Hear ME Ltd | Redruth | 2023 |
| CAN YOU Hear ME South West Limited | Redruth | 2026 |
| CAN YOU Hear US? C.I.C. | Halesworth | 2013 |
| Can-Do Sports and Drama Club Ltd | London | 2024 |
| Cana Care Medical Limited | Middleton | 2015 |
| Cana Healthcare Ltd. | Colchester | 2020 |
| Cana Nutrition Ltd | Swansea | 2024 |
| Cana Oasis Ltd | Borehamwood | 2014 |
| Canaan Healthcare Service Ltd | Birmingham | 2015 |
| Canaan Lane (DEV) Ltd | Alloa | 2022 |
| Canaan Project | Poplar | 2005 |
| Canaan Trust | Nottingham | 2004 |
| Canaan, Bethel & Shiloh (CBS) Care Ltd | Chatham | 2025 |
| Canadent Ltd | Stevenage | 2022 |
| Canal Crest Dental Practice Limited | Southampton | 2025 |
| Canaries Solutions Ltd | Norwich | 2019 |
| Canaris Ltd | London | 2026 |
| Canary Care Services Ltd | Reading | 2021 |
| Canary Chiropractic Clinic Limited | Pool | 2019 |
| Canary Home Care Services Ltd | Reading | 2025 |
| Canary House Care Limited | London | 2016 |
| Canary Limited | Sheffield | 1995 |
| Canary Therapy Ltd | London | 2023 |
| Canary Wharf Dental Ltd | Morden | 2026 |
| Canary Wharf Health Limited | Barnet | 2002 |
| Canary Wharf Physiotherapy Limited | Twickenham | 2003 |
| Canary Yellow & Black Ltd | London | 2017 |
| Canaryford Limited | Southend-On-Sea | 1993 |
| Canbalance Limited | Sudbury | 2020 |
| Canberra Clinical Solutions Ltd | Walsall | 2025 |
| Cancare Home Services Limited | Canterbury | 2001 |
| Cancer & Beyond CIC | Birmingham | 2026 |
| Cancer 52 | London | 2012 |
| Cancer AID for North/East (SRI Lanka) | Harrow | 1993 |
| Cancer AID Merthyr Tydfil Ltd. | Merthyr Tydfil | 2003 |
| Cancer and Dementia Awareness and Support for Africa (Cadasa) Ltd | King'S Lynn | 2018 |
| Cancer Awareness Trust Ltd | Sutton | 2017 |
| Cancer Black Care | London | 1996 |
| Cancer Care Trust | London | 2006 |
| Cancer Clinic.Uk Limited | Poole | 2022 |
| Cancer Community Chest | Norwich | 1996 |
| Cancer Connect NI | Enniskillen | 2009 |
| Cancer Connections Limited | South Shields | 2006 |
| Cancer Focus Northern Ireland | Belfast | 2004 |
| Cancer Help (Preston) Limited | Ribbleton | 1994 |
| Cancer Impact Support Services CIC | Nottingham | 2020 |
| Cancer Information & Support Services | Swansea | 2009 |
| Cancer Lifeline | Belfast | 2005 |
| Cancer Options Limited | Nottingham | 2003 |
| Cancer RE Ltd | Abingdon | 2024 |
| Cancer Research Pakistan | Waterlooville | 2025 |
| Cancer Research UK | London | 2001 |
| Cancer Screening Trust Ltd | London | 2021 |
| Cancer Specialists Limited | Romsey | 2012 |
| Cancer Support UK (Csuk) | London | 2004 |
| Cancer Support Yorkshire | Leeds | 1987 |
| Cancer Testing Services CIC | Woking | 2025 |
| Cancer United | Angmering | 2013 |
| Cancerbackup | London | 1993 |
| Cancerbae CIC | Isleworth | 2024 |
| Cancercare (North Lancashire & South Cumbria) | Lancaster | 2007 |
| Cancerlegalexperts Limited | Wilmslow | 2018 |
| Cancersafe Ltd | London | 2024 |
| Cancerscan UK Ltd | Farnham | 2023 |
| Cancersure Ltd | Braintree | 2023 |
| Cancerwise | Chichester | 1984 |
| Candela Healthcare Ltd | Hereford | 2020 |
| Candescence Nutrition Ltd | Bishop'S Stortford | 2021 |
| Candeur Ltd | Chatham | 2020 |
| Candice Aesthetics Ltd | Altrincham | 2021 |
| Candice Brown Skin Management Ltd | Banstead | 2020 |
| Candice Cares Services Limited | Milton Keynes | 2026 |
| Candice Conway Theatre Camps Limited | Lancaster | 2015 |
| Candid Care (NW) Limited | Liverpool | 2022 |
| Candid Care (UK) International | Thornton Heath | 2009 |
| Candid Care Services Ltd | Colchester | 2024 |
| Candid Consulting Ltd | Perth | 2017 |
| Candid Health & Social Care Ltd | Ashford | 2015 |
| Candid Healthcare Limited | London | 2021 |
| Candida Halton Ltd | Ashford | 2011 |
| Candilicious Diamond Butterfly Ltd | Bootle | 2021 |