| THE Highland COW Ranch Limited | St. Albans | 2024 |
| THE Highland EGG Company Limited | Manchester | 2010 |
| THE Highlands Retirement Livery Ltd | Banchory | 2026 |
| THE Hive Beekeeping Ltd | Tadworth | 2024 |
| THE Hive Honey Shop Ltd | Tadworth | 2024 |
| THE Hog's Back Hogs Company Limited | Farnham | 2014 |
| THE Holms Farm Ltd | Hexham | 2022 |
| THE Holwood Trust Limited | East Grinstead | 2004 |
| THE Honey Guild of the United Kingdom Limited | London | 2024 |
| THE Honey Orchard Limited | Haywards Heath | 2022 |
| THE Honey Shop Ltd | Tadworth | 2025 |
| THE Hood Show Team Limited | Bury St Edmunds | 2023 |
| THE Hoof GP Ltd | Newton Stewart | 2021 |
| THE Hoofman Limited | Whitchurch | 2003 |
| THE HOP Plant Company Ltd | Ipswich | 2020 |
| THE Hope Farm Project Ltd | Taunton | 2019 |
| THE Horned Beef Company Ltd | Penrith | 2015 |
| THE Horny Sheep Company Ltd | Blairgowrie | 2024 |
| THE Horrell Farming Co Ltd | Peterborough | 2020 |
| THE Horse Rangers Association (Harwich) Limited | Harwich | 2003 |
| THE Horse Sanctuary (Tettenhall) | Perton Wolverhampton | 2003 |
| THE Horse Scene UK Limited | Dumfries | 2025 |
| THE Horticulturalist Ltd | Poole | 2025 |
| THE Hot Air People Limited | Richmond | 2025 |
| THE Hound House Ltd | Northwich | 2019 |
| THE Hound Lounge Doggy Daycare Ltd | Richmond | 2021 |
| THE Hound Station Ltd | Banbury | 2023 |
| THE House of Herbology Limited | Whitstable | 2025 |
| THE House of Little Paws Ltd | Liverpool | 2020 |
| THE Humble Potato Co. Limited | Elsham | 2013 |
| THE Hunter Gatherers Hastings Limited | London | 2022 |
| THE Hurley Farming Company Ltd | Wellingborough | 2022 |
| THE Hutts Foundation | Ripon | 2012 |
| THE Hydroponics Shop Ltd | Swansea | 2018 |
| THE IAM Stewardship Limited | Hertford | 2025 |
| THE Incredible Plant Co Ltd | Appleton Wiske | 2024 |
| THE Indian Farmer Limited | Craven Arms | 2018 |
| THE Indoor Horticulture Company Ltd | Chichester | 2019 |
| THE Inkpot CIC | Sleaford | 2023 |
| THE International Sheep Dog Society Limited | Bedford | 1998 |
| THE Irish Equine Rehabilitation and Fitness Centre Ltd | Lisburn | 2017 |
| THE Irish Seaweed Company Limited | Carnlough | 2015 |
| THE Isaac Fishing Company Limited | Oban | 2014 |
| THE Islay Trading Company Limited | Isle Of Islay | 2024 |
| THE Ithon Fishery Company Limited | | 1987 |
| THE J M Forbes Garden Solutions Company Limited | Rochester | 2012 |
| THE Jaseffect Imperial Ltd | Romford | 2025 |
| THE Jasper Fishing Company Limited | Shetland | 2011 |
| THE John Foran Foundation | Sittingbourne | 2024 |
| THE JR Agricultural Company Ltd | Llandovery | 2022 |
| THE K9 PAD Limited | Chester | 2024 |
| THE Kare Company, UK Limited | Cambridge | 2024 |
| THE Kelsey Leigh Limited | Gateshead | 2018 |
| THE Kelty Highland Coos Ltd | Blairforge | 2025 |
| THE Kennels Buckinghamshire Ltd | Stanmore | 2022 |
| THE Kennels Ltd | Doncaster | 2020 |
| THE Kent Tree Company Ltd | Whitstable | 2022 |
| THE Kent Woodsman Ltd | Chatham | 2017 |
| THE Kexby Estate Limited | Cambridge | 1995 |
| THE Khan's Arabian Stud Farm Livery Yard and Fishery Ltd | Bolton | 2025 |
| THE Khurshid Farm Ltd | Burton-On-Trent | 2024 |
| THE Kilchoan Melfort Trust | Edinburgh | 2023 |
| THE Kilted Christmas Tree Company Limited | Kinross | 2006 |
| THE Kincorth Estates Company Limited | Forres | 1947 |
| THE Kitchen Ambassador Limited | Chalfont St. Giles | 2016 |
| THE Kitchen Garden People Ltd | Chipping Norton | 2016 |
| THE Knapple Company Ltd. | Bristol South Gloucestershire | 1997 |
| THE Knoll Cattery Ltd | Pontypool | 2025 |
| THE Knoydart Forest Trust | Mallaig | 1999 |
| THE KOI Store Limited | Bracknell | 2025 |
| THE Kylesku Crofters Trust Limited | By Lairg | 2000 |
| THE Laggan Forest Trust | Inverness Shire | 1998 |
| THE Laggan Forest Trust Forestry Company Ltd. | Laggan | 1998 |
| THE Lake at Boreham Ltd | Leigh On Sea | 2023 |
| THE Land of Khem Limited | Cardiff | 2013 |
| THE Land of Roots C.I.C. | Durham | 2001 |
| THE Landing Garden CIC | Stockport | 2023 |
| THE Landscapers UK Limited | Hants | 2006 |
| THE Lapwing Estate Limited | Doncaster | 1966 |
| THE Latney Star Limited | Hastings | 2019 |
| THE Laurels Farm | Wigton | 2010 |
| THE Lavender Farm Limited | Thirsk | 2021 |
| THE Lawhill Farming Company Limited | Perth | 1996 |
| THE Leafy Lair Ltd | Mildenhall | 2026 |
| THE Learning Barn Limited | Thirsk | 2016 |
| THE Ledbury Hunt Limited | Gloucester | 2000 |
| THE Leicester Longwool Sheepbreeder's Association | Bromsgrove | 2014 |
| THE Lettuce Company Limited | Stratford-Upon-Avon | 2001 |
| THE Lily V Ltd. | Laurencekirk | 2008 |
| THE Lingfield LOG Company Ltd | Cardiff | 2025 |
| THE Links House (Oykel Fishings) Limited | Inverness | 2015 |
| THE Lintonbank Country Estate Limited | Edinburgh | 2004 |
| THE Lion Kingdom Ltd | Porth | 2019 |
| THE Lions Livery & Stud Ltd | Fareham | 2019 |
| THE Lipizzaner UK Stud Limited | Wimbish Green | 2005 |
| THE Little Apiary Company Ltd | Romford | 2020 |
| THE Little Bitty Farm and Campsite Ltd | Mold | 2024 |
| THE Little Dairy Ltd | Oswestry | 2022 |
| THE Little Dog Barn Ltd | Swansea | 2023 |
| THE Little Dog Stop Limited | Woodford Green | 2024 |