| Kernock Park Plants Limited | Cornwall | 1996 |
| Kernow Agronomy (SW) Ltd | Falmouth | 2023 |
| Kernow Bovine Services Limited | Helston | 2025 |
| Kernow Equestrian Ltd | London | 2021 |
| Kernow Kiln Limited | St Austell | 2024 |
| Kernow Smallholdings Ltd | Helston | 2024 |
| Kerova Systems Ltd | Leicester | 2026 |
| Kerr Farms Limited | Omagh | 2013 |
| Kerrera Fisheries Limited | Laurelhill Business Park | 1982 |
| Kerry House Farms Limited | Newtownabbey | 2022 |
| Kerry Vale Free Range Eggs Limited | Newtown | 2009 |
| Kerry’S Kritters Small Animal Rescue Limited | Wisbech | 2023 |
| Kerslake Farming Limited | Barnstaple | 2019 |
| Kersquarter Farms Limited | Kelso | 1994 |
| Kersworthy Asset Management Limited | Bodmin | 2024 |
| Kerver Group Limited | Uttoxeter | 2017 |
| Kesgrave Allotment and Leisure Gardening Association Ltd | Ipswich | 2011 |
| Kesseni Ltd | Ledbury | 2021 |
| Kessock Ltd | Fraserburgh | 2023 |
| Kestrel Arboricultural Services Limited | Benfleet | 2017 |
| Kestrel Forestry Limited | Bedford | 2022 |
| Keswick Vines Limited | Norwich | 2024 |
| Ketley Investments (UK) Ltd | London | 2015 |
| Kettering Community Woodlands Limited | Kettering | 2026 |
| Kettle Strawson Produce Limited | Nottingham | 2021 |
| Kettlethorpe Sport Horses Limited | Grantham | 2017 |
| Ketton Holdings Limited | Woking | 1985 |
| KEV Johns Agricultural and Plant Contractors Limited | Holsworthy | 2012 |
| Keveral Farmers Limited | Cornwall | 1991 |
| Keveral Sustainable Land Holdings Limited | Looe | 1994 |
| Kevin and Sandra Holtby Ltd | Middlesbrough | 2017 |
| Kevin Cowe Ltd | Duns | 2015 |
| Kevin Evans Limited | Powys | 2003 |
| Kevin Keillor Fishing Company Ltd | Dunbar | 2022 |
| Kevin Thompson Limited | Workington | 2016 |
| Kevin Tinson Limited | Oxfordshire | 2003 |
| Kevin Wood Fishing Limited | Buckie | 2006 |
| Kevin Wrathall Limited | Penrith | 2014 |
| Kevock Garden Design Limited | Lasswade | 2016 |
| Kevock Garden Plants Limited | Lasswade | 2016 |
| KEW Little Pigs Farm Ltd | Amersham | 2016 |
| Kewcroft Limited | Exeter | 2013 |
| Key Essentials Limited | Ware | 2013 |
| Key Farms Ltd | Melton Mowbray | 2021 |
| Key Lime Tree Limited | Birmingham | 1977 |
| Key Tree Solutions Limited | York | 2023 |
| Keyes Farms Ltd | Buckingham | 2011 |
| Keyhaven Meadow Limited | Lymington | 2007 |
| Keyingham Digester Feedstock Limited | Hull | 2018 |
| Keyland K9 Limited | Bury St Edmunds | 2021 |
| Keylang Cattery Ltd | Wigton | 2018 |
| Keyo Agricultural Services Ltd | Brigg | 1992 |
| Keyport Land Limited | Cwmbran | 1976 |
| Keys Holdings Limited | Pontefract | 2015 |
| Keyser Contracting Ltd | Cirencester | 2014 |
| Keysley Limited | Salisbury | 2003 |
| Keysley Store Limited | Salisbury | 2008 |
| Keyston Farms Limited | Huntingdon | 2013 |
| Keystone Agri Ltd | Helston | 2022 |
| Keystone Farms Ltd | Tiverton | 2019 |
| Keythorpe Game Limited | Leicester | 2005 |
| Keythorpe Valley Farm Ltd | Leicester | 2016 |
| Keywater Fisheries (NI) Ltd | Florencecourt | 2021 |
| KF Farming Limited | Wigton | 2021 |
| KF Showjumping Ltd | Pedmore | 2025 |
| Kfalconry Ltd | Bargoed | 2026 |
| Kfarmer Ltd | Sandown | 2009 |
| KFN Services Ltd | Carmarthen | 2013 |
| Kfried Limited | Barnstaple | 2021 |
| KFS 2014 Limited | Dereham | 2014 |
| KG Agricultural Contracting Ltd | Walsall | 2019 |
| KG Digger Hire and Groundwork Ltd | Sheffield | 2023 |
| KG Equestrian Limited | Sawbridgeworth | 2025 |
| KGB Plant & AG Ltd | Newport | 2024 |
| KGB Poultry Ltd | Armagh | 2015 |
| KH Equestrian Ltd | Newcastle Upon Tyne | 2020 |
| KH Farms (N.I.) Ltd | Cookstown | 2016 |
| KH Farms Limited | Eye | 2016 |
| Khair Eikhalij Ltd | London | 2021 |
| Khaki (Eco) Ltd | Derby | 2021 |
| Khalsa Saffron Ltd | Bury St. Edmunds | 2025 |
| Khan Brothers Trading Company Ltd | London | 2026 |
| Khat Ltd | Birmingham | 2025 |
| Khatoon Services Ltd | Harlow | 2023 |
| Khaya Kales Ltd | London | 2025 |
| Kheirkhah Farming Solutions Limited | London | 2025 |
| Kherc Ltd | St. Ola | 2025 |
| KHJ Equine Ltd | Dewsbury | 2026 |
| Khmer Ocean Life | Wellingborough | 2023 |
| KI Fishing Ltd | Fraserburgh | 2026 |
| Kiaer Estates Limited | Perth | 2016 |
| Kiaora Fishing Company Limited | Isle Of Barra | 2024 |
| KIC (Holdings) Limited | Perth | 1999 |
| Kickondotcom Ltd | Macclesfield | 2022 |
| Kidger Company Limited | Brighton | 2023 |
| Kidglove K9 Ltd | Warrington | 2025 |
| Kidner Agricultural Contractors Limited | Bristol | 2012 |
| Kidner Farming Limited | Norwich | 1947 |
| Kids Plant Trees Ltd | Sheffield | 2022 |
| KIDS2PONIES Ltd | Arundel | 2020 |