| K C, L F & J W Braithwaite Limited | Lincoln | 2004 |
| K Calvert Ltd | Leyburn | 2011 |
| K Chamberlain & SON Ltd | Skegness | 2013 |
| K D Ferguson Ltd. | Falkirk | 2022 |
| K E and L R C Edwards Limited | Cwmbran | 2008 |
| K E Dawson & Sons Ltd | Peterborough | 2016 |
| K E H Brownlie Limited | Jedburgh | 1996 |
| K F Equestrian Ltd | Macclesfield | 2017 |
| K Farm Ford END Ltd | Chelmsford | 2022 |
| K G Morris Timber Ltd | Usk | 2011 |
| K H Barclay Limited | Dundee | 2024 |
| K H Twentyman Limited | Wigton | 2008 |
| K Hutchinson & SON Limited | Newmarket | 2021 |
| K I and E L Matkin Limited | Uttoxeter | 2014 |
| K J & C S Wilson (Holdings) Limited | Carlisle | 2007 |
| K J & C S Wilson Limited | Carlisle | 2021 |
| K J & S M French Limited | Ripon | 2015 |
| K J a Fishing Limited | Hartlepool | 2021 |
| K J Curson Growers Limited | Wisbech | 2006 |
| K J Milton Limited | Tiverton | 2015 |
| K J Robins Ltd | Reigate | 2022 |
| K LEE (Contracts) Ltd | Enniskillen | 2015 |
| K M Buckland Agricultural Contractor Limited | Dorchester | 2004 |
| K Martin & SON Limited | Spalding | 2003 |
| K Maxey 2010 Limited | Kirklington | 2010 |
| K Milia Ltd | Birmingham | 2025 |
| K Mulholland Ltd | Craigavon | 2012 |
| K Putterill Farms Limited | Spalding | 2013 |
| K R Fishing Ltd | Peterhead | 2025 |
| K R Loveridge Limited | Cliffe | 2008 |
| K Simpson & Sons Limited | Harrogate | 2012 |
| K Slater Limited | Preston | 2002 |
| K Storr Agri Limited | Wigton | 2023 |
| K T T Services (Kendal) Limited | Kendal | 2002 |
| K Trees Limited | Fort William | 2019 |
| K W & B L Harrison Limited | Cumbria | 2006 |
| K W Boulton Tree Care Specialists Limited | Pershore | 2006 |
| K W Brake and SON Limited | Frome | 2008 |
| K W Equine Ltd | Cambridge | 2024 |
| K W Farm & Equestrian Limited | Castle Douglas | 2019 |
| K W Timmins & Sons Limited | Lincoln | 2009 |
| K Waddell Contracting Ltd | Hamilton | 2025 |
| K Wickett Ltd | Bude | 2018 |
| K&A Farms Ltd | Newry | 2026 |
| K&C Scullion Ltd | Dungannon | 2005 |
| K&I Bowen Ltd | Kidderminster | 2026 |
| K&J Farming Limited | York | 2024 |
| K&M Tree Care and Landscaping Limited | Derby | 2024 |
| K&N Stables Ltd | Cheltenham | 2020 |
| K&R Farming Ltd | Warminster | 2022 |
| K&S Davies Ltd | Brixham | 2022 |
| K-9 Black Sabre Security Ltd | Salford | 2021 |
| K. & C. Hird Limited | Lancashire | 1970 |
| K. & I. Millar & Sons Limited | Heathhall | 2007 |
| K. Fresh Ltd | Withernsea Hull | 2000 |
| K. J. Parris & Partners Ltd | Honiton | 2022 |
| K. Key & Sons Ltd | Banningham | 1999 |
| K. Woodings and Sons Limited | Hinckley | 1989 |
| K.A.M. Farming Limited | Dorchester | 1992 |
| K.B. Tebbit Limited | Great Eversden | 1958 |
| K.B.P Thakrar Ltd | London | 2019 |
| K.C.Gray Limited | Broxbourne | 1965 |
| K.H Agri Ltd | Auchterarder | 2026 |
| K.J. Cherry & Sons Limited | Banbury | 1963 |
| K.James Agri Services Ltd | Pembroke | 2021 |
| K.K. Huddleston & Sons Limited | Bridlington | 1985 |
| K.Lovegrove Limited | Nr.Chelmsford | 1965 |
| K.M.A.(Farms)Limited | Kingslynn | 1954 |
| K.N. Grant Limited | Boston | 1985 |
| K.O Ecological Restoration Services Ltd | Poole | 2022 |
| K.P Horse Transport Ltd | Rugby | 2024 |
| K.P. Nets Limited | Newry | 2010 |
| K.P.2 Limited | Powys | 1996 |
| K.R & M.C Dixon & Sons Limited | York | 2023 |
| K.R. & S.R. Spilman | Market Rasen | 1994 |
| K.R. Rollinson Consultants Limited | North Ferriby | 1979 |
| K.S.H. Farmers Limited | Kelso | 1993 |
| K.T. Dixon Limited | Saltaire | 1993 |
| K.W. White & Sons Limited | Wellington | 1972 |
| K2 Projects Ltd | Nottingham | 2025 |
| K9 Applejacks Ltd | Wisbech | 2024 |
| K9 Art Photography Limited | Cannock | 2022 |
| K9 Breeding and Services Limited | Blackpool | 2024 |
| K9 Connections Ltd | Linwood | 2021 |
| K9 Control Ltd | London | 2024 |
| K9 Cuts Ltd | London | 2019 |
| K9 Development Academy Limited | Mansfield | 2024 |
| K9 Fertility and Studs Limited | Bolton | 2021 |
| K9 Fertility Clinic Cumbria Limited | Workington | 2021 |
| K9 Fertility Ltd | Wisbech | 2021 |
| K9 K-Os Ltd | Corwen | 2006 |
| K9 Lodge Ltd | Londonderry | 2021 |
| K9 Manor Limited | Garforth | 2022 |
| K9 on the Run Ltd | Pontypridd | 2023 |
| K9 Pawfection Ltd | Walsall | 2021 |
| K9 Platinum Limited | Derby | 2025 |
| K9 Prime Cuts Ltd | London | 2024 |
| K9 Resort Ltd | Pontypridd | 2023 |
| K9-MATES UK | Stowmarket | 2023 |
| K9ADVENTURESPUTNEY Ltd | London | 2022 |