| Cattlestone Farm Limited | Pulborough | 2022 |
| Cattletech Scotland Ltd | Biggar | 2025 |
| Catton Turkeys Limited | York | 1977 |
| Catz From Mars Ltd | Scunthorpe | 2026 |
| Caudal Peduncle Limited | Bristol | 2013 |
| Caudwell (Drayton) Limited | Winchester | 1964 |
| Caudwell (Rowsley) Farms Limited | Matlock | 1965 |
| Caudwell and Sons Limited | Winchester | 1997 |
| Caudwell Farms | Spalding | 1951 |
| Caugherty Farm Ltd | Broughshane | 2015 |
| Cauldhame Farm Livery Ltd | Kilmarnock | 2019 |
| Caulhame Farm Ltd | Garvagh | 2023 |
| Caunter & Sons Farms Limited | Kingsbridge | 2021 |
| Cause 4 Paws Limited | London | 2016 |
| Causeway Cat Shelter CIC | Kinross | 2021 |
| Causeway Coast Dog Rescue Limited | Coleraine | 2010 |
| Causey Park Farms Ltd | Nurthumberland | 2004 |
| Causley Farming Limited | Spilsby | 1997 |
| Causton Street Farms Limited | | 1992 |
| Cavaghan & Gray Limited | Wakefield | 1919 |
| Cavalcare Ltd | Colchester | 2018 |
| Cavan Farms Limited | Dungannon | 2017 |
| Cavanagh Free Range Eggs Ltd | Newtownbutler | 2012 |
| Cavanreagh Farms Limited | Omagh | 2019 |
| Cave Woods Ltd | London | 2020 |
| Cavelstone Farm Limited | Lochgelly | 1996 |
| Cavendish Agriculture Ltd. | London | 2023 |
| Cavendish Stud Ltd | Loughborough | 2020 |
| Caviar Biotec Limited | Burscough | 2008 |
| Cavill and Sons Limited | Taunton | 2011 |
| Cavy Krazy [Dorset] Ltd | Warminster | 2022 |
| Cawarden Holdings Limited | Lichfield | 2002 |
| Cawdor Forestry Limited | By Nairn | 2001 |
| Cawkeld Farming Limited | Driffield | 1954 |
| Cawni Community Interest Company | London | 2025 |
| Cawood Crewing Ltd | Hull | 2026 |
| Cawood Poultry Limited | York | 2012 |
| Cawsey's Farms Limited | Holsworthy | 2019 |
| Caynedale Ltd | Carlisle | 2022 |
| Caytoft Farms Limited | Boston | 1952 |
| Cayton Park Stud Limited | London | 2017 |
| Caz's Pooches Ltd | Halifax | 2020 |
| CB Equine Sales Ltd | Arundel | 2025 |
| CB Hoofcare Limited | Leicester | 2016 |
| CB Integrated Professional Services (UK) Ltd | Witney | 2021 |
| CB International Sporthorses Limited | Pinner | 2016 |
| CB Mowers Limited | Birmingham | 2018 |
| CB Shellfish Ltd | Annan | 2013 |
| CBD Brothers Ltd | Bury St Edmunds | 2019 |
| Cbd-Me Ltd. | Market Harborough | 2018 |
| Cbga LP Limited | London | 1997 |
| CC Countryside Ltd | Eastbourne | 2022 |
| CC Equine Ltd | Brighton | 2025 |
| CC Livestock Limited | Dumfries | 2014 |
| CC Maritime Services Ltd | London | 2026 |
| CC Nicholson Ltd | Annan | 2023 |
| CC Rural Ltd | Doncaster | 2025 |
| CC Sporting Ltd | Perth | 2023 |
| CC Sportshorses Ltd | Strathaven | 2022 |
| CC Walford Limited | Newport | 2023 |
| CCE Training Limited | Chesham | 2019 |
| CCF Management Limited | Cowbeech | 1991 |
| CCG Farming Limited | King'S Lynn | 2025 |
| Ccght Enterprises Limited | Ballymoney | 2025 |
| CCM Shooting Ltd | Motherwell | 2024 |
| CCM Works Limited | Newton Abbot | 2026 |
| CCR Agri Services Ltd | Jedburgh | 2021 |
| CCR Equestrian Ltd | Gloucester | 2019 |
| CCS Agri Ltd | Bourne | 2022 |
| CCS Trade Ltd | Cardiff | 2018 |
| Ccswhf Limited | Moreton In Marsh | 2026 |
| CD Farm Ltd | Dungannon | 2019 |
| CD Farming Limited | Newmarket | 2024 |
| CD Fishing Ltd | Hull | 2024 |
| CD Forestry & Environmental Ltd | Honiton | 2024 |
| Cdhorses Limited | Blackpool | 2023 |
| CDS Ground Services Ltd | Sutton Coldfield | 2023 |
| CDS IT Solutions Limited | Wrexham | 2010 |
| CDS Labour (Properties) Ltd | Hop Pole | 2022 |
| CE & AB Coutts & Sons Ltd | Lyndhurst | 2019 |
| CE Engineering Ltd. | Manston | 1996 |
| CE Equestrian Ltd | Ellesmere | 2026 |
| CE Hepher Ltd | East Grinstead | 2025 |
| Ceased Trading 09811276 Limited | Cardiff | 2015 |
| CEB Enterprises Ltd | Bristol | 2021 |
| Cebero Limited | Southampton | 1963 |
| CEC Equine Supplements Ltd | Market Drayton | 2018 |
| CEC Physio and Racing Limited | Market Drayton | 2021 |
| Cecka Ltd | Mansfield | 2018 |
| CED Equestrian Ltd | Nottingham | 2025 |
| Cedar and Stone Outdoor Living Ltd Ltd | London | 2026 |
| Cedar Computing Systems Limited | London | 2008 |
| Cedar Tree Care Limited | Brentwood | 2013 |
| Cedardale Arboricultural Specialists Limited | Farnham | 2014 |
| Cedars Equestrian Ltd | Daventry | 2006 |
| Cedars Honey Limited | London | 2026 |
| Cedartown Limited | Cheltenham | 1975 |
| Cedarwood Tree Care Limited | Hereford | 2009 |
| Ceeport Limited | Dartford | 2022 |
| Ceffyl Coch Stables and Livery Ltd | Neath | 2025 |