| Honeysuckle Croft Ltd | Tywardreath | 2022 |
| Honeysuckle Farm Dunswell Limited | Hull | 2024 |
| Honeysuckle Wood Trading Limited | Monmouth | 2018 |
| Honeywood Farm Enterprises Ltd | Ashford | 2005 |
| Hong SHU Tang Limited | Hull | 2025 |
| Honiley Farms Limited | Kenilworth | 1982 |
| Honingham Farms Limited | Norwich | 1991 |
| Honiton and District Agricultural Association | 66A High Street Honiton | 1986 |
| Honley Show Society Limited | Holmfirth | 1994 |
| HOO Farming Company Limited | Bury St. Edmunds | 2012 |
| Hood's Tree Services Ltd | Boughton Monchelsea | 2018 |
| Hoof & Harvest Ltd | Ashton-Under-Lyne | 2025 |
| Hoof & Hyde Limited | Glasgow | 2009 |
| Hoof Trimming (NI) Ltd | Fivemiletown | 2013 |
| Hoofcare Solutions Ltd | Barnstaple | 2023 |
| Hoofcare Supplies Ltd | Selby | 2025 |
| Hoofcount Limited | Preston | 2012 |
| Hoofcount Solutions Ltd | Preston | 2025 |
| Hoofdoc Limited | Enniskillen | 2023 |
| Hoofequine Ltd | Malmesbury | 2013 |
| Hoofs and Paws Ltd | Doncaster | 2020 |
| Hooftec Limited | Seaford | 2006 |
| Hooftec Online Ltd | Eastbourne | 2026 |
| Hoofworx Ltd | Sherborne | 2025 |
| Hook Norton Equine Ltd | Chipping Norton | 2021 |
| Hooked in Ltd | Solihull | 2026 |
| Hookend Estate Ltd | Reading | 2023 |
| Hooker's Baits and Rigs Limited | Blackpool | 2019 |
| Hookgreen Limited | Tunbridge Wells | 2019 |
| Hookpoint Ltd | London | 2026 |
| Hooks Farm Ltd | Gloucester | 2026 |
| Hooksgreen Herbs Limited | Stone | 1994 |
| Hookside Ltd | Bath | 2019 |
| Hooktone Limited | Dorking | 1990 |
| Hookways (Services) Ltd | Okehampton | 2025 |
| Hoon HAY Farm Limited | Derby | 1976 |
| Hooper's Farm Limited | Clapton Wick | 1999 |
| Hoopers ELM Farms Limited | Bath | 1977 |
| Hootens Farm Ltd | Northants | 2023 |
| Hooves & Horizons Ltd | Hindhead | 2026 |
| Hooves & Whiskers Ltd | Gainsborough | 2024 |
| Hooves and Happiness Equine Centre Ltd | Barnet | 2025 |
| Hopcraft Agricultural Services Ltd | Clitheroe | 2014 |
| Hopcraft Limited | Somerset | 1996 |
| Hope 4 U Farm Ltd | Clogher | 2024 |
| Hope Aviation Limited | Lymington | 2009 |
| Hope Falcons Ltd | Andover | 2017 |
| Hope Farm Dorset Limited | Southampton | 2019 |
| Hope Farm Limited | Folkestone | 2011 |
| Hope Farm Organics Limited | Lutterworth | 2014 |
| Hope Farm Trading Ltd | Leeds | 2021 |
| Hope Hall Stud Limited | Cheshunt | 2013 |
| Hope Harvest Community Farm CIC | Bradford | 2025 |
| Hope House (Lineside) Ltd | Newark | 2024 |
| Hope House Farm Estates Limited | Felton | 2021 |
| Hope IT Consultancy Services Ltd | Doncaster | 2013 |
| Hope Meadows Ltd | Lincoln | 2022 |
| Hope Technical Sales and Services Limited | Woking | 1989 |
| Hope Valley Energy Limited | Hope Valley | 2006 |
| Hope's Happy Hounds Limited | Newcastle Upon Tyne | 2018 |
| Hope's Micro Farming Ltd | Banbury | 2023 |
| Hopeman Christmas Trees Limited | Inverness | 2007 |
| Hopetoun Farms Limited | Midlothian | 1978 |
| Hopkins & Phillips Limited | Earls Croome | 1975 |
| Hopkins Developments (Holdings) Limited | Wincanton | 2007 |
| Hopkins Estates Limited | Wincanton | 1977 |
| Hopkins Farm Ltd | London | 2019 |
| Hopkinson Farm Limited | Ormskirk | 2021 |
| Hopkinson Rail Contractors Ltd | Mansfield | 2024 |
| Hopleys Plants Limited | Hertfordshire | 1976 |
| Hopmech Limited | Worcester | 2010 |
| Hoppiness Brews CIC | Bristol | 2025 |
| Hoppings Softwood Products Limited | Polegate | 1934 |
| Hopton Pools Ltd | Stone | 2016 |
| Hopwood Farming | Driffield | 2011 |
| Hordle Carp and Coarse Lakes Ltd | Hordle, New Milton | 2024 |
| Hordley Farms Ltd | Ellesmere | 2013 |
| Hordley Grange Farms Ltd | Ellesmere | 2013 |
| Horgan Lands Limited | Banbury | 2018 |
| Horham Dairy and Care Farm CIC | Eye | 2018 |
| Horizon Agri Ltd | Bodmin | 2025 |
| Horizon Equine Ltd | Stony Stratford | 2011 |
| Horizon Fisheries Limited | Achnasheen | 2012 |
| Horizon Game Limited | Thirsk | 2009 |
| Horizon Timber Ltd | Derby | 2026 |
| Horizon Tree & Hedge Care Ltd | Dorking | 2024 |
| Horizon Tree Surgery Limited | Manchester | 2026 |
| Horn Farming Limited | Winchester | 2014 |
| Horn's Landscaping Limited | Durham | 2005 |
| Hornabrook Resources Limited | Honiton | 1997 |
| Hornbeam Partners Ltd | Langport | 2022 |
| Hornbuckle Farms Limited | Leicester | 2019 |
| Hornby Enterprises Limited | Norwich | 2016 |
| Horne Contracting Limited | Faversham | 2013 |
| Horner Farming Limited | Aberdeen | 2002 |
| Horns (Castle Bolton) Limited | Leyburn | 1996 |
| Horns Farm Limited | Eversely | 1997 |
| Hornsbury Haylage & Animal Feeds Ltd | Chard | 2018 |
| Hornsey Harvesting Limited | Crook | 2012 |
| Hornshaw Farms Ltd | Skipton | 2024 |