| Hamly Hill Limited | Orkney | 2005 |
| Hamlyns Wood Limited | Exeter | 2023 |
| Hammer Valley Farm Limited | Horsham | 2011 |
| Hammer Wood Conservation Limited | Edenbridge | 1986 |
| Hammerpond Kennels Limited | Horsham | 2007 |
| Hammond Energy Limited | Swansea | 2014 |
| Hammond Produce Limited | Nottingham | 1999 |
| Hammonds Farm Limited | Chelmsford | 2012 |
| Hammonds Heritage Tree Care Ltd | Haslemere | 2024 |
| Hampden Bottom Farm Limited | High Wycombe | 2009 |
| Hampreston Manor Farm Limited | Dorset | 1956 |
| Hamps Valley Farms Limited | Nr Leek | 1986 |
| Hamps Valley Limited | Staffs | 2003 |
| Hampshire Arboriculture Ltd | Alton | 2017 |
| Hampshire Down Sheep Breeder's Association(The) | Halifax | 1890 |
| Hampshire Farm Fencing Ltd | Chichester | 2017 |
| Hampshire Forage Transport Ltd | Romsey | 2018 |
| Hampshire Game Limited | Andover | 1979 |
| Hampshire Garden Limited | Southampton | 2011 |
| Hampshire Holsteins Ltd | Winchester | 2021 |
| Hampshire Pedigrees Ltd | Salisbury | 2021 |
| Hampshire Rare Breeds Limited | Horsham | 2022 |
| Hampshire Tree & Garden Care Ltd | Waterlooville | 2025 |
| Hampshire Wildlife & Pest Control Ltd | London | 2020 |
| Hampshire Wood Fuels Ltd | Alton | 2021 |
| Hampton Hayes Kennels & Cabins Ltd | Shrewsbury | 2006 |
| Hampton Pest Management Ltd | Treharris | 2024 |
| Hampton Wafre Farm Limited | Tenbury Wells | 2011 |
| Hamson Farm Limited | Wareham | 2026 |
| Hamstead Marshall Wildlife Ltd | Newbury | 2023 |
| Hamstead Park Farm Estate Ltd | Croydon | 2009 |
| Hamstead Timber Limited | Ryde | 2016 |
| Hamza Toher & Brothers Ltd | Manchester | 2024 |
| HAN MET Ltd | Nottingham | 2014 |
| Hanby Estates Ltd | Louth | 1950 |
| Hanby Farms Limited | Grantham | 1946 |
| Hancock Polo Ltd | Henley-On-Thames | 2021 |
| Hancock's Horses Limited | Telford | 1997 |
| Hancocks Farm Limited | Fleet | 2003 |
| Hancox Bros Ltd | Brough | 2021 |
| Hancox Farm Limited | Taunton | 2018 |
| Hand in Hand NRG Limited | Chelmsford | 2007 |
| Handa Fishing Company Limited | Lairg | 2025 |
| Handal Company Group Ltd | Londra | 2020 |
| Handaxwood Limited | Lanark | 2021 |
| Handley Equestrian Limited | Sheffield | 2010 |
| Handpicked Shellfish Company Limited | Weymouth | 2004 |
| Hands in Action Ltd | London | 2025 |
| Handsfree Handling Limited | Newport Pagnell | 2020 |
| Handsmooth Farm Ltd | Wallingford | 2024 |
| Handsome Horses Ltd | Newcastle Upon Tyne | 2020 |
| Handy Carp Ltd | Templecombe | 2005 |
| Handy Helpers Ltd | Bristol | 2024 |
| Handy MAL Limited | Durham | 2004 |
| Handy MAN Harry Perrins Limited | Telford | 2017 |
| Handymode Ltd | London | 2019 |
| Handyside Fishing (North) Ltd | Glasgow | 2022 |
| Handyside Fishing Ltd | Morpeth | 2005 |
| Handyside Holdings Ltd | Morpeth | 2022 |
| Handythingscambridge Limited | Cambridge | 2025 |
| Hangar Growers Limited | Shrewsbury | 2021 |
| Hanger 15 Limited | York | 2025 |
| Hankins Heys Farm Limited | Stoke On Trent | 1997 |
| Hanlab Limited | South Molton | 2016 |
| Hanlon Sport Horses Limited | Marlborough | 2017 |
| Hanmer Enterprises Ltd | Wrexham | 2023 |
| Hann Farming Ltd | Wells | 2015 |
| Hanna & Strachan Ltd. | Dundee | 2006 |
| Hanna Farms Ltd | Newry | 2024 |
| Hannah Jack Fishing Limited | Plymouth | 2014 |
| Hannah Lewis Equestrian Services Ltd | Moreton-In-Marsh | 2019 |
| Hannah Nursery Limited | Potters Bar | 2016 |
| Hannah's Cats Ltd | Clacton-On-Sea | 2026 |
| Hannchelle Limited | Wingate | 2017 |
| Hannington & Sons (Farms) Limited | Reading | 1963 |
| Hansbury Limited | Wingate | 2021 |
| Hansbury Racing Limited | Wingate | 2019 |
| Hanslope Limited | Southwold | 1997 |
| Hansom Horses Ltd | Newcastle Upon Tyne | 2020 |
| Hantche & Crame Family Farm Ltd | Stockton | 2023 |
| Hanwell Tree Care Ltd | Wimborne | 2024 |
| Hanwell Wine Estate Limited | Melton Mowbray | 2019 |
| HAP Agriworks Ltd | Gargrave | 2025 |
| Hapika Ltd | Carmarthenshire | 2023 |
| Happily Ever After Rescue CIC | Beccles | 2024 |
| Happy Cats Cattery Ltd | Inverurie | 2025 |
| Happy Days Farming Company Limited | Lincoln | 2012 |
| Happy Dayz Dogs Ltd | Haywards Heath | 2020 |
| Happy Dog Happy Days Ltd | Stansted Mountfitchet | 2024 |
| Happy Dogs Ltd | Mitcham | 2019 |
| Happy Hackers Perthshire Limited | Perth | 2025 |
| Happy Harvest Limited | London | 2020 |
| Happy Heifers Crazy Acres Limited | Lybster | 2014 |
| Happy Henny After CIC | Nottingham | 2025 |
| Happy Hikers Dog Walking Limited | Hayling Island | 2022 |
| Happy Hooves Livery Limited | Wirral | 2020 |
| Happy Hooves Livery Yard Limited | Hyde | 2016 |
| Happy Hooves Rehabilitaton Ltd | Crymych | 2024 |
| Happy Hooves Sanquhar C.I.C. | Sanquhar | 2020 |
| Happy Horse Retirement Limited | Powys | 2002 |