| Coton House Farm Stables Limited | Lichfield | 2022 |
| Cotswold Academy of Aesthetics and Beauty Ltd | London | 2024 |
| Cotswold Assessments Limited | Leamington Spa | 2020 |
| Cotswold Beacon Academy Trust | Stroud | 2011 |
| Cotswold Breath and Body Ltd | Cheltenham | 2022 |
| Cotswold Bunnies Nurseries Ltd | Stroud | 2016 |
| Cotswold Chef Cooking Ltd | Alcester | 2025 |
| Cotswold Communities First CIC | Gloucester | 2013 |
| Cotswold Cookery School Limited | Stroud | 2008 |
| Cotswold Culinary College Ltd | Birmingham | 2025 |
| Cotswold Dance Academy Limited | Gloucestershire | 2003 |
| Cotswold First AID Hub Ltd | Kington | 2026 |
| Cotswold First AID Ltd | Cheltenham | 2023 |
| Cotswold Flight Training Ltd | Maidenhead | 2024 |
| Cotswold Guardians Limited | Fairford | 2015 |
| Cotswold Gymnastics Club Casc Limited | Cirencester | 2023 |
| Cotswold Lakes Trust | Cirencester | 2005 |
| Cotswold Montessori Ltd | Burford | 2019 |
| Cotswold Music Tutors Limited | Stroud | 2014 |
| Cotswold Research and Consultancy Ltd | Stroud | 2018 |
| Cotswold Sports Camps Limited | Banbury | 2021 |
| Cotswold Tutoring Ltd | London | 2023 |
| Cotswold Water Park Events Ltd | Cirencester | 2017 |
| Cotswolds Learning Limited | Tetbury | 2020 |
| Cotswolds Pilates Club Ltd | Cheltenham | 2024 |
| Cotswolds Yoga Ltd | Oxford | 2024 |
| Cottage of Dreams Ltd | Liverpool | 2021 |
| Cotterill & Cotterill Ltd | Nottingham | 2023 |
| Cotterstock Education Ltd | Kettering | 2020 |
| Cottesbrooke Infant and Nursery School | Birmingham | 2014 |
| Cottesmore School Limited | Horsham | 1899 |
| Cottingley Community Centre | Bingley | 2004 |
| Cotton Buddies Limited | Romford | 2014 |
| Cotton Toft Educational Limited | Leeds | 2015 |
| Cottontails | London | 2009 |
| Cottontails Childcare Ltd | Northampton | 2015 |
| Cottontails Preschool CIC | Cambridge | 2020 |
| Couch to Recovery Limited | Chichester | 2024 |
| Coudemy Ltd | Nottingham | 2022 |
| Cougarmania Foundation | Keighley | 2019 |
| Coulbeck Events Ltd | Spennymoor | 2025 |
| Coull Coaching Ltd | Strathaven | 2017 |
| Coulter Jones Counselling Limited | Mediacityuk | 2025 |
| Coulthard Group Ltd | Sheffield | 2024 |
| Coumes Spring Children's Centre Ltd | Sheffield | 2021 |
| Council for At-Risk Academics | London | 1959 |
| Council for British Archaeology(The) | York | 1983 |
| Council for Education in the Commonwealth | London | 2002 |
| Council for Learning Outside the Classroom | Shrewsbury | 2008 |
| Council for Subject Associations Limited | Melton Mowbray | 2007 |
| Council for the Defence of British Universities | Esher | 2012 |
| Council for the Registration of Schools Teaching Dyslexic Pupils | Farnham | 1996 |
| Council for Wales of Voluntary Youth Services Cyngor Cymreig Y Gwasanaethau Ieuenctid Gwirfoddol | Cardiff | 2005 |
| Council of Milton Abbey School Limited(The) | Blandford Forum | 1954 |
| Council of Osteopathic Educational Institutions | London | 1997 |
| Coundon and Leeholme Early Years Centre C.I.C. | Bishop Auckland | 2006 |
| Coundon Kidz Club Limited | Coventry | 2017 |
| Counselling & Psychotherapy Ltd | Brighton | 2025 |
| Counselling & Tutoring House Limited | London | 2018 |
| Counselling and Psychotherapy Training Academy Limited | Bexhill On Sea | 2016 |
| Counselling and Psychotherapy Training College Limited | Holsworthy | 2017 |
| Counselling and Therapy Scotland CIC | Glasgow | 2019 |
| Counselling and Therapy With Zara Ltd | Motherwell | 2024 |
| Counselling Education Academy Group Limited | Southampton | 2022 |
| Counselling Enterprise Ltd | Beckenham | 2008 |
| Counselling in Practice Limited | Cranbrook | 2015 |
| Counselling Pastoral Trust | London | 1993 |
| Counselling Spring and Bloom Limited | Nottingham | 2020 |
| Counselling Training the Midlands Community Interest Company | Nottingham | 2012 |
| Counselling West Lancs CIC | Skelmersdale | 2020 |
| Counselling With Holly Ltd | Birmingham | 2024 |
| Counsellor Limited | Blackburn | 2023 |
| Count on ME Ltd | Surbiton | 2025 |
| Count on ME Tutor Ltd | Hertfordshire | 2025 |
| Count on US Education Ltd | Irvine | 2018 |
| Counter Extremism Network Ltd | London | 2020 |
| Counter Extremism Project UK | Norwich | 2021 |
| Counter Force (CF Systems) CIC | Pontypridd | 2021 |
| Counter Grappling Ltd | Stocksbridge | 2023 |
| Counter Punch Academy Ltd | Sheffield | 2025 |
| Counterbalance London Ltd | London | 2020 |
| Counterpoint Aviation Limited | Farnham | 2019 |
| Countess Anne Church of England School | Hatfield | 2013 |
| Counting Kids Franchising Ltd | Braintree | 2021 |
| Counting Stars Ltd | Hackney | 2023 |
| Counton Tutoring Ltd | Hemel Hempstead | 2025 |
| Country Bumpkins (Inverness) Limited | Glasgow | 2012 |
| Country Care (Nursing Homes) Limited | | 1992 |
| Country Cousins Ltd | Ilfracombe | 2006 |
| Country House Camps Ltd | London | 2016 |
| Country Kids Day Nursery Kneesall Limited | Newark | 2018 |
| Country Kids Day Nursery Ltd | Staffordshire | 2016 |
| Country Navigator Limited | London | 2016 |
| Countryside Connect CIC | Derby | 2024 |
| Countryside Day Nurseries Ltd. | Burntwood | 2004 |
| Countryside Learning | Burnley | 1986 |
| Countryside Learning Scotland | Blairgowrie | 2007 |
| Countryside Learning Trust | Stoke On Trent | 2006 |
| Countrywide Training Limited | Enfield | 2016 |
| Counts Football Limited | Purley | 2026 |