| Coldham Farm Limited | Bury St. Edmunds | 2002 |
| Coldharbour Farm Limited | Sturminster Newton | 1997 |
| Coldharbour Grazing Limited | Faringdon | 2019 |
| Coldicote Farm Limited | London | 2020 |
| Coldingham Loch FLY Fishers Ltd | Coldingham | 2020 |
| Coldrenick Farms Limited | Liskeard | 1959 |
| Coldstream Bridge Company Ltd | Berwick-Upon-Tweed | 2016 |
| Coldstream Scotland Limited | Kincardineshire | 2011 |
| Coldswood Farm Livery Ltd | Ramsgate | 2024 |
| Coldwater Salmon Ltd | London | 2025 |
| Coldwells of Hillhead Ltd | Peterhead | 2026 |
| Cole Agri-Trading Ltd | Tiverton | 2019 |
| Cole Ambrose Limited | Ely | 1943 |
| Cole Contracting Ltd | Richmond | 2026 |
| Cole Farming Limited | Bridgwater | 2009 |
| Cole Farms Ltd | Narberth | 2020 |
| Cole Hill Farm Limited | Hartlepool | 2016 |
| Colebrooke Estate Ltd | Brookeborough | 2026 |
| Colecloughs' Farms Limited | St. Asaph | 2012 |
| Coleford Fisheries Limited | London | 2018 |
| Coleman and Jones Limited | Towcester | 2014 |
| Coleman Concepts Ltd | Haverfordwest | 2015 |
| Coleman Contracts Limited | Norwich | 2006 |
| Colemans Creations Ltd | London | 2021 |
| Coles Christmas Trees Limited | Leamington Spa | 2018 |
| Coleshill Tree Services Limited | Coleshill | 2002 |
| Colethrop Farm Limited | Cirencester | 1997 |
| Coletta and Tyson Limited | Beverley | 1999 |
| Coley Equine & Cattle Ltd | Halifax | 2024 |
| Colgate Farm Ltd | Cheltenham | 2022 |
| Colin and Jack Weeks Fencing Limited | Chulmleigh | 2022 |
| Colin Bradley Ltd | Preston | 1990 |
| Colin Channer Agricultural Contractor Limited | Winchester | 2012 |
| Colin D Mcmillan Limited | Forfar | 2007 |
| Colin G Jones Agri Supplies Ltd | Caldicot | 2016 |
| Colin Gregory Roses Limited | Lincs | 2003 |
| Colin J Collins Limited | Upton Snodsbury | 2007 |
| Colin Jackson & Sons Limited | Macclesfield | 2002 |
| Colin Mackay Ltd. | Fraserburgh | 2010 |
| Colin Moses Ltd | Oakworth | 2023 |
| Colin Pardoe Limited | Hagley | 1965 |
| Colin Phillips (Farms) Limited | Worcestershire | 1997 |
| Colin Potter Farms Limited | Thirsk | 1977 |
| Colin Smith Agricultural Contracting Ltd | Wigton | 2012 |
| Colin Stevens Forestry Limited | Leeds | 2010 |
| Colin Underwood Limited | Hampshire | 2002 |
| Colin White Tree Surgery Limited | Hexham | 2015 |
| Colin Woodward Agronomy Limited | Banbury | 2022 |
| Colina Pickles Equestrian Limited | Stratford Upon Avon | 2024 |
| Colinette Animal Services Limited | Chislehurst | 2026 |
| Colins Agri Limited | Ilkeston | 2025 |
| Colin’S Custom Built Rods Ltd | Liverpool | 2025 |
| Collacombe Farm Limited | Tavistock | 1997 |
| Collacott Farm Ltd | Chulmleigh | 2026 |
| Collafirth Seafarms Limited | Shetland | 2008 |
| Collafirth Shellfish Ltd | Brae | 2019 |
| Collar Club Cardiff and Vale Ltd | Cardiff | 2022 |
| Collars and Tails Limited | Exeter | 2025 |
| Colldale Airedale & Terriers Ltd | Ashford | 2018 |
| Collective Skills Project CIC | Newcastle | 2019 |
| Colleen Allen Ltd | Neath | 2021 |
| College Farm Coity Ltd | Swansea | 2025 |
| College Valley Estates Limited | Berwick-Upon-Tweed | 1953 |
| Collenan Farming Company Limited | Troon | 2018 |
| Collessie Feeds Limited | Dundee | 2009 |
| Collett Farm Limited | Aylesbury | 1943 |
| Colley Contracting Limited | Driffield | 2015 |
| Colley Fold Turkeys Limited | Nr Wakefield | 1976 |
| Colleymore Farm Limited | London | 2025 |
| Collie Flowers Ltd | Barnsley | 2022 |
| Collier Management Group Limited | Longcross | 2018 |
| Colliers Adventure Farm Ltd | Aberbeeg | 2021 |
| Collingham and District Agricultural Society | Newark | 1993 |
| Collingham Lodge Farm Enterprises Ltd | Collingham | 2016 |
| Collingwood Farm Limited | Kent | 1958 |
| Collins Contracting Limited | Ventnor | 2025 |
| Collins Ecology & Landscape Ltd | Norwich | 2025 |
| Collins Farming and Forestry Services Limited | Royston | 2008 |
| Collinson Farm Services Ltd | Doncaster | 2026 |
| Collinson Property Services Ltd | Barton-Upon-Humber | 2024 |
| Collis & Co Ltd | Worcestershire | 1996 |
| Collison and Associates Limited | Tilney All Saints, Kings Lynn | 2002 |
| Collison CUT Flowers Ltd | Kings Lynn | 2021 |
| Collison Tree Care Ltd | Aylesbury | 2017 |
| Colliton Barton Limited | Taunton | 2010 |
| Collmart CS Limited | Huntingdon | 2020 |
| Collum Securities Limited | Ashford | 1973 |
| Colly Brook Farm Ltd | Ludlow | 2018 |
| Collycroft Limited | Hilton | 2007 |
| Collyers Services Limited | Hampshire | 1995 |
| Colmac Holdings Limited | | 2007 |
| Colmac Milk Limited | Isle Of Bute | 2023 |
| Coln Native Livestock Limited | Cheltenham | 2025 |
| Colne Valley Honey Ltd | Iver | 2021 |
| Colonial Farms Limited | Pangbourne | 2001 |
| Colour GRO Limited | Workington | 2001 |
| Colourscope Gardens Limited | Mobberley | 1986 |
| Colsen Contracts Limited | Enniskillen | 2015 |
| Colsterworth Poultry Co.Limited | Sleaford | 1960 |
| Colt Park Limited | Lancaster | 2012 |