| Cardiff Community Sawna CIC | Cardiff | 2025 |
| Cardiff Deep Clean Specialists Ltd | Cardiff | 2010 |
| Cardiff Foodbank | Cardiff | 2009 |
| Cardiff Grand Thai Massage Limited | Cardiff | 2026 |
| Cardiff Hair and Beauty Ltd | Cardiff | 2020 |
| Cardiff Hair Loss Clinic Ltd | Cardiff | 2023 |
| Cardiff Handyman Ltd | Cardiff | 2025 |
| Cardiff Harlequins RFC Limited | Cardiff | 2016 |
| Cardiff House Clearance Limited | Cardiff | 2022 |
| Cardiff Islamic Centre CIC | Cardiff | 2021 |
| Cardiff K and Beauty Ltd | Cardiff | 2025 |
| Cardiff K Nails and Beauty Ltd | Cardiff | 2025 |
| Cardiff Lock & Safe Company Limited | Cardiff | 1985 |
| Cardiff Nail and Beauty Training School Limited | Bridgend | 2018 |
| Cardiff North Dementia Service CIC | Cardiff | 2023 |
| Cardiff North Limited | Bristol | 1992 |
| Cardiff Permanent Makeup Studio Limited | Cardiff | 2020 |
| Cardiff Pet Cremation Ltd | Cardiff | 2023 |
| Cardiff Pilates Studio Ltd | Cardiff | 2023 |
| Cardiff Properties Management Ltd | Cardiff | 2018 |
| Cardiff Shutters and Blinds Limited | Penarth | 2021 |
| Cardiff Third Sector Council (C3SC) | Cardiff | 1997 |
| Cardiff Tints Limited | Cardiff | 2019 |
| Cardiff Vineyard | Cardiff | 2008 |
| Cardiff Young Men's Christian Association | Cardiff | 2012 |
| Cardigan Bay Seafood Festival | Aberaeron | 2008 |
| Cardigan DRY Cleaners & Launderette Limited | Leeds | 2023 |
| Cardil Ltd | Ely | 2023 |
| Cardinal Albert Road Limited | High Hurstwood | 2017 |
| Cardinal Cleaning Limited | Uckfield | 2019 |
| Cardinal House Ltd | Colchester | 2021 |
| Cardinal Land Crafts Ltd | Aberdeen | 2018 |
| Cardinal North END Limited | Uckfield | 2016 |
| Cardinal Restoration Limited | Orpington | 2003 |
| Cardinals Barber Limited | Leeds | 2025 |
| Cardinus Risk Management Limited | London | 1995 |
| Cardio Core Fitness Ltd | Barry | 2010 |
| Cardio MED Consulting (CMC) Ltd | Edinburgh | 2023 |
| Cardiodiagnostics UK Limited | London | 2008 |
| Cardiovascular Outcomes Research and Education Limited | London | 2019 |
| Cardona Capital Ltd | London | 2021 |
| Cardonald Barbers Ltd | Glasgow | 2021 |
| Cardonald Community Network CIC | Glasgow | 2021 |
| Cardonald Drycleaners & Alterations Ltd | Glasgow | 2012 |
| Cardoso Evolution Ltd | London | 2014 |
| Cardpem Ltd | London | 2022 |
| Cardrona Company | Edinburgh | 2015 |
| Cards & Party 4 U Ltd | Glasgow | 2015 |
| Cards 4 Less Ltd | Hayes | 2018 |
| Cardscale Limited | Warwickshire | 1994 |
| Cardtest Limited | Ilford | 1979 |
| Care & Repair Cardiff and the Vale | Cardiff | 2015 |
| Care & Repair Cymru 2015 | Cardiff | 2015 |
| Care & Repair Forum Scotland | Glasgow | 2001 |
| Care & Support West Limited | Bristol | 2013 |
| Care 2 Care Recruitment Ltd | Blackburn | 2020 |
| Care 4 Hair Limited | Ramsgate | 2002 |
| Care 4 Herts Ltd | Watford | 2017 |
| Care 4 K9 Ltd | Telford | 2018 |
| Care About Angus C.I.C. | Forfar | 2015 |
| Care Admin Ltd | Bromborough | 2024 |
| Care Administration Services Limited | Birmingham | 2019 |
| Care After Combat | Newark | 2014 |
| Care After Combat Trading Limited | Newark | 2014 |
| Care and Beauty Limited | Blackburn | 2023 |
| Care and Choice Ltd | Sittingbourne | 2012 |
| Care and Companions Ltd | High Wycombe | 2021 |
| Care and Cure Physio Clinic Ltd | Romford | 2025 |
| Care and Learning Alliance | Inverness | 1989 |
| Care and Learning Alliance Scotland Ltd | Inverness | 2012 |
| Care and Repair Edinburgh Ltd. | Edinburgh | 1995 |
| Care Arcade Limited | Dagenham | 2021 |
| Care Around U Ltd | Birmingham | 2023 |
| Care Association Alliance | Halesowen | 2015 |
| Care Association Alliance South East Ltd | Oxford | 2024 |
| Care Avenues (London) Limited | Ilford | 2018 |
| Care Avenues Limited | Birmingham | 2009 |
| Care Cleaning Services Limited | Cambs | 2006 |
| Care Concern Solutions Ltd | Boston | 2025 |
| Care Connected Ltd | Leigh-On-Sea | 2012 |
| Care Cosmetics Ltd | Warrington | 2022 |
| Care Crew Limited | Cardiff | 2018 |
| Care CUT Ltd | Waltham Cross | 2024 |
| Care Drycleaning and Tailoring Ltd | Braintree | 2013 |
| Care England | London | 1986 |
| Care for ALL Yorkshire Ltd | Scarborough | 2012 |
| Care for Cambodia | Stevenage | 2013 |
| Care for Cancer | Omagh | 2023 |
| Care Forum Wales | Wrexham | 1999 |
| Care Hair UK Ltd | Buckingham | 2024 |
| Care Halos Community CIC | Oakham | 2025 |
| Care Holidays Limited | London | 2019 |
| Care Home Finder Ltd | Helperby | 2015 |
| Care Hope Ltd | London | 2021 |
| Care I Care CIC | London | 2022 |
| Care in Comfort Limited | Chipping Norton | 2022 |
| Care in Comfort Support Services Ltd | London | 2025 |
| Care in Style Limited | Westcliff-On-Sea | 2011 |
| Care Individual Limited | London | 2016 |
| Care Leadership Support Ltd | Clitheroe | 2019 |