| Cornerstone Sports Ltd | Sutton | 2025 |
| Cornerswell Design & Production Ltd | Aberystwyth | 2020 |
| Cornhill Highland Games | Huntly | 2004 |
| Cornhill Village Community Trust | Banff | 2009 |
| Cornish Art Emporium Ltd | Newquay | 2025 |
| Cornish Athletic Performance Ltd | Truro | 2021 |
| Cornish Coast Adventures Ltd | Bodmin | 2010 |
| Cornish Glass Art Limited | Penryn | 2020 |
| Cornish Pirates Limited | Truro | 2006 |
| Cornish Pirates Rugby Limited | Truro | 2005 |
| Cornish Pleasure Cruises Ltd | Falmouth | 2022 |
| Cornish Rock Tors Limited | Exeter | 2006 |
| Cornish Sinfonia | Falmouth | 1999 |
| Cornish Swim Academy Ltd | Hayle | 2018 |
| Cornish Youth Ballet Company CIC | Sticker, St Austell | 2026 |
| Cornmill Art Space Ltd. | Ilkley | 2016 |
| Cornucopia Live Limited | Bristol | 2025 |
| Cornwall & Devon Motocross Club Ltd | Launceston | 2017 |
| Cornwall Academy of Theatre Arts CIC | Truro | 2023 |
| Cornwall Accessible Nature Parks CIC | Bury St. Edmunds | 2026 |
| Cornwall and Devon Land Rover Club Limited | Newquay | 1986 |
| Cornwall Cricket Board Limited | Truro | 2011 |
| Cornwall Flying Club Limited | Bodmin | 1978 |
| Cornwall Folk Festival CIC | Wadebridge | 2015 |
| Cornwall Footballgolf Ltd | St Austell | 2023 |
| Cornwall Golf Limited | Truro | 2026 |
| Cornwall Gymnastics Centre C.I.C. | Wadebridge | 2019 |
| Cornwall Heritage Trust Limited(The) | Redruth | 1985 |
| Cornwall High Performance Limited | Falmouth | 2015 |
| Cornwall Hospice Care Lottery Limited | St. Austell | 2006 |
| Cornwall International Male Choral Festival Ltd | Helston | 2002 |
| Cornwall Karting Limited | Wadebridge | 2010 |
| Cornwall Leisure Activities Limited | Plymouth | 2007 |
| Cornwall Media Resource Limited | Redruth | 1997 |
| Cornwall Musical Theatre & Performing Arts | Liskeard | 2026 |
| Cornwall Off-Road Limited | Camelford | 2024 |
| Cornwall Padel Club Ltd | Newquay | 2026 |
| Cornwall Performing Arts CIC | St Austell | 2019 |
| Cornwall Rugby Referees Society | Truro | 2011 |
| Cornwall Scrap Store | St. Austell | 1994 |
| Cornwall Special Needs Taekwondo C.I.C. | Redruth | 2021 |
| Cornwall Sports Tours Limited | Redruth | 2025 |
| Cornwall Studios Ltd | Camelford | 2018 |
| Cornwall Tattoo Convention Ltd | Truro | 2019 |
| Cornwall Theatre Company Limited | Penzance | 1981 |
| Cornwall Waverunner Safaris Limited | Nottingham | 2013 |
| Cornwall Yoga Ltd | Newquay | 2022 |
| Cornwall's Backyard Ultra Ltd | St. Columb | 2025 |
| Cornwalls Great Escape Rooms Limited | Penzance | 2016 |
| Cornwood Cricket Club Ltd | Cornwood | 2025 |
| Cornwood Sporting Club Limited | Cornwood | 2020 |
| Corocomps Ltd | Ellon | 2026 |
| Coroger Ltd | London | 2022 |
| Corolaje Films Ltd | Chatham | 2020 |
| Coromandel Productions Ltd | Peterborough | 2008 |
| Coronado Enterprises Limited | Wednesfield | 2000 |
| Coronet Clubs Limited | Holborn | 2024 |
| Corplay Limited | Wadebridge | 2026 |
| Corporate 2 Commando Limited | Knutsford | 2024 |
| Corporate Activities Limited | Inverness Shire | 2001 |
| Corporate Benefits Limited | Wembley | 2015 |
| Corporate Bond and Build Limited | Plymouth | 2016 |
| Corporate Circus Ltd | Woking | 2024 |
| Corporate Commando Ltd | Birkenhead | 2024 |
| Corporate Driving Experiences Limited | Leicester | 2026 |
| Corporate Entertainment Agency Limited | Aylesford | 2017 |
| Corporate Entertainment Professionals Ltd | Ramsgate | 2011 |
| Corporate Events (UK) Limited | Orpington | 2000 |
| Corporate Funfairs Limited | South Shields | 2006 |
| Corporate Golf Activities Ltd | Manchester | 2025 |
| Corporate Golf Events Limited | Middlesex | 2006 |
| Corporate Golf Limited | Chepstow | 2016 |
| Corporate Golfing Events Limited | Harlow | 2025 |
| Corporate Illusion Limited | Ellington | 2008 |
| Corporate Media Displays Limited | Kidderminster | 2000 |
| Corporate Padel Club Limited | London | 2026 |
| Corporate Performance Limited | Old Oxted | 2015 |
| Corporate Personal Fitness Limited | Darlington | 2015 |
| Corporate Vibes Ltd | London | 2025 |
| Corporation Street Ltd | Manchester | 2020 |
| Corpus Fitness Ltd | Caterham | 2011 |
| Corpwellnessplay Ltd | London | 2025 |
| Corr Leisure Limited | Bourne | 2020 |
| Corralea Activity Centre Limited | Enniskillen | 2004 |
| Corrbrand Limited | Newry | 2024 |
| Correctional Facilities Ltd | London | 2008 |
| Correia Studios Ltd | Southam | 2024 |
| CORRIDOR8 Ltd. | Leeds | 2017 |
| Corridors of Power Generation Limited | New Addington | 2023 |
| Corridors of Uncertainty Limited | Farnham | 2020 |
| Corrie Nielsen Designs Limited | Warwick | 2013 |
| Corries (Music) Ltd., the | Edinburgh | 1974 |
| Corrigan Competitions Ltd | London | 2023 |
| Corrina Harrison Ltd | Harrogate | 2024 |
| Corris Caravan Park Limited | Rhyl | 1962 |
| Corris Caverns Limited | Machynlleth | 1992 |
| Corru.Pt Ltd | Watchet | 2020 |
| Corruption Bounce Ltd | Bolton | 2024 |
| Cors Holdings Ltd | Plymouth | 2025 |
| Corsham Area Development Trust Community Interest Company | Corsham | 2006 |