| Kielder Forest Products Ltd | Morpeth | 1992 |
| Kieran Mcpolin Ltd | Castlewellan | 2026 |
| Kierans Aquatic Shack Limited | Rushden | 2022 |
| Kiernan Agri Contracts Ltd | Enniskillen | 2019 |
| Kiko Mezcal Ltd | London | 2018 |
| Kikori Ltd | Bishop'S Stortford | 2021 |
| Kilan Stud CYF | Mold | 2018 |
| Kilbracks Farm Ltd | Armagh | 2015 |
| Kilbride Farms Ltd | Ballymena | 2018 |
| Kilbride Stock Company Limited | Mayford Woking | 1982 |
| Kilbright Farming Ltd | Newtownards | 2017 |
| Kilbucho Limited | Edinburgh | 2024 |
| Kilburns Farming Company Limited | Fife | 1975 |
| Kilby Timber Ltd | Grafty Green | 2014 |
| Kilchoan Management Limited | Oban | 2015 |
| Kilcoa Ltd | Enniskillen | 2026 |
| Kilcon Farm Ltd | Loughgilly | 2014 |
| Kildrum Kennels Ltd | Dromore | 2020 |
| Kildrummy Estates Limited | Edinburgh | 1979 |
| Kilfinan Community Forest Company | Tighnabruaich | 2007 |
| Kilgarie Farm Ltd | Brechin | 2003 |
| Kilgram Grange Farm Limited | Ripon | 1997 |
| Kilgrammie Cat Hotel Ltd | Girvan | 2025 |
| Kilhallon Agri-Food Centre CIC | Par | 2019 |
| Kilifi Plantations,Limited | London | 1926 |
| Kilkeel Angling Club Limited | 10 Abbey Yard | 1996 |
| Killaghy Eggs Limited | Enniskillen | 2025 |
| Killala Limited | Leicester | 2021 |
| Killard Farms Ltd | Enniskillen | 2024 |
| Killean Estate Holdings (Europe) Limited | London | 2020 |
| Killean Estate Holdings Limited | London | 2020 |
| Killeen Farms Limited | Armagh | 2026 |
| Killeeshil Rural Development Group Limited | Ballygawley | 2004 |
| Killigrew Farm Limited | St Austell | 2019 |
| Killin Estate Ltd | Middlewich | 2024 |
| Killinchy Free Range Pork Limited | Newtownards | 2017 |
| Killingholme Handling Services Ltd | Barton-Upon-Humber | 2012 |
| Killough Bay Oysters Ltd | Castlewellan | 2026 |
| Killough Oysters Ltd | Downpatrick | 2003 |
| Killybracken Farms Ltd | Dungannon | 2015 |
| Killyfaddy Farms Limited | Armagh. | 2010 |
| Killyflugh Farm Eggs Ltd | Ballymena | 2026 |
| Killygarvin Farm Eggs Ltd | Dungannon | 2016 |
| Killzone Limited | Chester | 2024 |
| Kilmagamish Holsteins Limited | Craigavon | 2025 |
| Kilmaha Limited | Cinderford | 2018 |
| Kilmallie Community Company | Fort William | 2006 |
| Kilmany Scottish Produce Limited | Newport-On-Tay | 1998 |
| Kilmaronock Stud Unlimited | Alexandria | 2021 |
| Kilmartin (Scotland) Ltd. | Edinburgh | 2012 |
| Kilmeny Farm Ltd | Tarbert | 2003 |
| Kilmore Farms Ltd | Caledon | 2011 |
| Kilmore Meats Limited | Co Armagh | 2007 |
| Kilmory Farms Limited | Glasgow | 2019 |
| Kilmoyle Farm Services Limited | Ballymoney | 2016 |
| Kiln Dried Logs Halifax Ltd | Halifax | 2024 |
| Kiln Dried Logs London Ltd | Hitchin | 2018 |
| Kiln Dried Logs Ltd | Ross-On-Wye | 2009 |
| Kiln Logs Express Ltd | York | 2025 |
| Kilnaheery Cottage Eggs Ltd | Beragh | 2024 |
| Kilnaslee Pigs Limited | Dungannon | 2014 |
| Kilnsey Park Limited | Skipton | 2021 |
| Kilnstown Farms Limited | Cumbria | 2006 |
| Kilnwood Park Polo Limited | Slough | 2025 |
| Kilnyard Farm Ltd | Christchurch | 2014 |
| Kilo Shellfish Limited | Dumfries | 2008 |
| Kiloran Fishing Limited | Macduff | 2017 |
| Kiloran Shellfish Ltd | Buckie | 2020 |
| Kilpatrick Farm Ltd | Glenanne | 2018 |
| Kilsannagh Mushrooms Ltd. | Dungannon | 2013 |
| Kilsyth Limited | Norwich | 2010 |
| Kiltariff Ltd | Newry | 2025 |
| Kiltermon Pure Pasture Ltd | Fivemiletown | 2024 |
| Kilwarlin Farms Limited | Hillsborough | 2023 |
| Kilworth Farms Limited | Lutterworth | 1965 |
| Kimberlenes UK Limited | Coventry | 2017 |
| Kimberley Farms (Harby) Ltd | Nottingham | 2004 |
| Kimberley Farms Limited | Norwich | 1947 |
| Kimbers Farm Equestrian Ltd | Windsor | 2025 |
| Kimble Pasture Ltd | Aylesbury | 2010 |
| Kimbridge Trout Fishing Limited | Romsey | 2022 |
| Kimmeridge Limited | Wisbech | 1997 |
| Kimpton Livery Ltd | Salisbury | 2009 |
| Kimpton Manor Farm Limited | Winchester | 2014 |
| Kims Equestrian Limited | Hemel Hempstead | 2025 |
| KIN Bees Honey Ltd | Dunfermline | 2018 |
| KIN Hill CIC | Brampton | 2021 |
| KIN Spirits Limited | Holmfirth | 2019 |
| Kinaldie Boarding Kennels & Cattery Limited | Arbroath | 1978 |
| Kincaple Farm Limited | Fife | 1974 |
| Kincurdie Fishing Company Limited | Cawdor | 1990 |
| Kind Bloodstock Limited | Newmarket | 2021 |
| Kindergarten Dog Day Care Ltd | South Shields | 2025 |
| Kindrochet Limited | Strathaven | 2008 |
| Kindwood Ltd | Cardiff | 2019 |
| Kinena Farms Agrotourism Limited | Banbury | 2025 |
| Kinermony Limited | Aberdeen | 1946 |
| Kinetix Limited | North Harrow | 1995 |
| Kineton (Warwick) Limited | Birmingham | 2026 |
| King Farming Company Ltd | Milton Keynes | 2023 |