| Cockahoop Creative CIC | East Boldon | 2025 |
| Cockahoop Theatre Ltd | London | 2020 |
| Cockaynes Wood Trust | Wivenhoe | 2008 |
| Cockbain Events Ltd | Cambridge | 2013 |
| Cocken Lodge Limited | Durham | 2025 |
| Cockermouth Golf Club Limited | Cockermouth | 2024 |
| Cockermouth Pilates Limited | Cockermouth | 2019 |
| Cockfields Farm Ltd | Ashton-Under-Lyne | 2020 |
| Cockfosters and Barnet Gymnastics Club Ltd | Folkestone | 2015 |
| Cockleshell Community Sports Club Limited | Southsea | 2010 |
| Cockley Woodland Wellness Limited | Wakefield | 2022 |
| Cockney Productions Limited | Tilbury | 2014 |
| Cockney Rejects Limited | Hornchurch | 2016 |
| Cockram Limited | London | 2020 |
| Cockrobin Creative Limited | Weybridge | 2025 |
| Coco & Cwtch Limited | London | 2020 |
| Coco Capitan Limited | London | 2016 |
| Coco Commercial Services Ltd | Battle | 2013 |
| Coco Creative Marketing Limited | Longfield | 2016 |
| Coco Entertainment Ltd | Glasgow | 2026 |
| Coco Media Ltd | Morden | 2022 |
| Coco Moon Creations Limited | Thames Ditton | 2008 |
| Coco Motorsport Limited | Croydon | 2021 |
| Coco Pops Music Limited | Sheffield | 2015 |
| Coco Productions Ltd | Chelmsford, Essex | 2021 |
| Coco Reformer Ltd | Chatham | 2025 |
| Coco's Playbarn Limited | Frodsham | 2002 |
| Cocoaflex Enterprises Limited | London | 2017 |
| Cocobongobingo Ltd | Antrim | 2021 |
| Coconut Competitions Ltd | Blackpool | 2022 |
| Coconut Wellness Studios Ltd | Tamworth | 2023 |
| Coconutacha Ltd | Hengoed | 2021 |
| Coconutgrass Ltd | Dunstable | 2011 |
| Cocoon and Bloom Sensory CIC | Coventry | 2025 |
| Cocoon Design Limited | Oxford | 2011 |
| Cocoon Health and Wellbeing Limited | Belper | 2020 |
| Cocoon Health Limited | Horsham | 2018 |
| Cocoon in the Park Limited | Leeds | 2009 |
| Cocoon Performing Arts School Ltd | London | 2026 |
| Cocreate Art Ltd | Chelmsford | 2018 |
| Cocreate Vision Limited | Leigh-On-Sea | 2023 |
| Coda (Wenlock) Limited | London | 2016 |
| Coda Agency Limited | London | 2019 |
| Coda Audio UK Limited | Oldbury | 2017 |
| Coda Creative Ltd | Pulborough | 2022 |
| Coda Dance Company | Grays | 2013 |
| Coda Events Ltd | London | 2022 |
| Coda Production Services Ltd | Glasgow | 2015 |
| Coda to Coda Ltd | London | 2007 |
| Codazep Ltd | Hailsham | 2023 |
| Coddiwomple Theatre Ltd | Redhill | 2024 |
| Code 4 Sports Limited | London | 2004 |
| Code Fitness Limited | Newark | 2013 |
| Code Grangemouth Ltd | Grangemouth | 2025 |
| Code Media and Entertainment Ltd | Newcastle Upon Tyne | 2024 |
| Code Modern Limited | London | 2015 |
| Code Mood Limited | Bracknell | 2024 |
| Code Red ENT Ltd | Wolverhampton | 2024 |
| Code Sports & Media Limited | Swansea | 2024 |
| Code Switch Ltd | Streatham | 2021 |
| CODE2COACHING Ltd | Southend-On-Sea | 2025 |
| Codeword Music Limited | Borehamwood | 2018 |
| Codex Analysis Ltd | Gloucester | 2021 |
| Codex Conservation Ltd | London | 2024 |
| Codex Curiosarum Ltd | Hereford | 2026 |
| Codex Live Ltd. | London | 2026 |
| Codex Productions Limited | London | 2016 |
| Codex Theatre Ltd | Farnham | 2025 |
| Codpc Ltd | Londonderry | 2025 |
| Codswallop CIC | Leeds | 2017 |
| Coed Bach Park Community Bowls Association Limited | Swansea | 2017 |
| Coed Collective Ltd | Cowbridge | 2025 |
| Coed Ithel Fisheries Limited | Cambridge | 1966 |
| Coed-Y-Mwstwr Golf Club (1998) Limited | Bridgend | 1998 |
| Coelus Group Ltd | London | 2022 |
| Coerver Futures CIC | Stockport | 2026 |
| Coetide Music Management Limited | London | 2024 |
| Coeus HQ Limited | Isleworth | 2021 |
| Coffee & PIE Ltd | London | 2003 |
| Coffee and Unicorns Ltd | Dartford | 2014 |
| Coffer Family BBQ Limited | London | 2019 |
| COG Audio Ltd | London | 2024 |
| COG Entertainments Limited | Penarth | 2018 |
| Cogc C.I.C. | Cardiff | 2018 |
| Cogenhoe United Football Club Limited | Northampton | 2020 |
| Cogenhoe United Youth Football Club Ltd | Northampton | 2024 |
| Cogges Heritage Enterprises Limited | Witney | 2013 |
| Cogges Heritage Trust | Witney | 2010 |
| Coggeshall Town Football Club Limited | Dunmow | 2014 |
| Coggia CIC | Southam | 2026 |
| Coghill Boxing Ltd | Hull | 2023 |
| Cognito Music Limited | Bromsgrove | 2019 |
| Cogosports Ltd | London | 2025 |
| Cogs & Marvel (UK) Ltd | Newmarket | 2021 |
| Cohan Collective Community Interest Company | London | 2019 |
| Cohen - Art Ltd | Johnstone | 2018 |
| Cohen Cardona Films Limited | Slough | 2025 |
| Cohere Arts CIC | Woodbridge | 2021 |
| Coherence Audio Ltd | Belfast | 2023 |
| Cohesion Plus Kent | Dartford | 2009 |