| Hills Tree Surgery Ltd | Benfleet | 2025 |
| Hillsdown Farm Ltd | Haywards Heath | 2022 |
| Hillside and Hams Limited | Bridgwater | 2017 |
| Hillside Dairy Farms Limited | Dromore | 2012 |
| Hillside Dairy Limited | Carlisle | 2000 |
| Hillside Farm Bryher Ltd | Isles Of Scilly | 2025 |
| Hillside Farming Limited | Monmouth | 2026 |
| Hillside Kennels Ltd | Dungannon | 2021 |
| Hillside MS Ltd | Newark | 2012 |
| Hillside Paws for Life Ltd | Dronfield | 2020 |
| Hillside Trees Limited | Radstock | 2010 |
| Hillslap and Greenhill Limited | Galashiels | 1959 |
| Hilltex Farms Ltd | Newtownards | 2024 |
| Hilltop Agri Ltd | Omagh | 2023 |
| Hilltop Freerange Ltd | Ballymena | 2024 |
| Hilltop House Farm Ltd | Belfast | 2020 |
| Hilltop Maintenance Limited | Galashiels | 2014 |
| Hilltop Tails Ltd | High Peak | 2024 |
| Hillview Equine & Supplies Ltd | Crewe | 2018 |
| Hillview Farm Dromore Ltd | Omagh | 2025 |
| Hillview Farm Limited | Omagh | 2005 |
| Hillview Hardy Plants Limited | Bridgnorth | 2003 |
| Hillwood Bloodstock Limited | Marlborough | 2009 |
| Hilmarco Limited | Leicestershire | 1950 |
| Hilsden Farm Limited | Manchester | 1984 |
| Hilsden Farming and Agriculture Limited | Rochdale | 2022 |
| Hilton Potatoes Limited | Forfar | 2019 |
| Hilton Valley Carp Fishery (Essex) Ltd | Clacton On Sea | 2025 |
| Hiltonstown Simmentals Limited | Ballymena | 2018 |
| HIM Marine UK Limited | London | 2023 |
| Hinch Enterprises Limited | Grantham | 2007 |
| Hinchley Agriculture Limited | Nottingham | 2008 |
| Hinchliffe Agriculture Limited | Goole | 2014 |
| Hinchliffe Farming Limited | Sheffield | 2001 |
| Hinckford Farming Limited | Halstead | 2010 |
| Hinckley Angling Club Limited | Hinckley | 2019 |
| Hind Brothers Limited | Kettering | 1954 |
| Hindon Farms Limited | Bicester | 2009 |
| Hinds Holdings Limited | Hull | 2024 |
| Hindwest Developments Limited | Ferryhill | 1995 |
| Hinge Farm Limited | Waterbeach | 2025 |
| Hinksey Hill Woodland Company Limited | Witney | 2003 |
| Hintlesham Fisheries Limited | Maldon | 2003 |
| Hinton Farm Limited | Yeovil | 1956 |
| Hinton Land Limited | Poole | 2017 |
| Hinton Park Estate Limited | Hinton St. George | 1997 |
| Hinton Pest Control Limited | Evesham | 2011 |
| Hinton Tree Services Ltd | Wrexham | 2026 |
| Hinxhill Fields Ltd | Folkestone | 2025 |
| Hippenscombe Estate Limited | Nr Salisbury | 2018 |
| Hippo Global Holding Ltd | Cardiff | 2021 |
| Hiptonics Limited | Birmingham | 2006 |
| Hipwood Polo Ltd | London | 2019 |
| Hire a Hawk UK Ltd | Thornton-Cleveleys | 2021 |
| Hireworx Limited | Chelmsford | 2023 |
| Hirnant Limited | Llanidloes | 2009 |
| Hirst (Farmers) Limited | Stockton On Tees | 1999 |
| Hirst Brothers Contractors Ltd | York | 2012 |
| Hirst Farms Limited | Great Yarmouth | 1960 |
| HIS and Hers Building Services Ltd | North Shields | 2021 |
| Historical Management Associates Limited | Bristol | 1987 |
| Hitas Formulations Ltd | Kendal | 2020 |
| Hitchen Partners Limited | Ripon | 2016 |
| Hitchin Lavender Limited | Hitchin | 2014 |
| Hitchman Polo Bloodstock Limited | Bristol | 2015 |
| Hive 2 Honey Ltd | Oldham | 2024 |
| Hive and Honey Limited | Manchester | 2022 |
| Hive Helpers CIC | Farnham | 2021 |
| HIVE5 Ltd | Manchester | 2023 |
| Hixham Farms Limited | Buntingford | 1997 |
| Hixon Plant Hire Ltd | Stafford | 2024 |
| HJ & HB Case Limited | Taunton | 2000 |
| HJ & JD Duthie Limited | Ross-On-Wye | 2015 |
| HJ Prop Ltd | Ely | 2017 |
| HJB Equine Ltd | Berwick Upon Tweed | 2016 |
| HJH Events Ltd | Bishop Auckland | 2023 |
| HJL Forestry Limited | Oxon | 2023 |
| HJL Properties (Sleights) Ltd | Whitby | 2019 |
| HJM Tree Services Limited | Newquay | 2024 |
| HJR Landscapes Limited | Warwick | 2020 |
| HK Agri Limited | Winchester | 2025 |
| HK Racing Limited | Newmarket | 2019 |
| HKW Ltd | London | 2026 |
| HL Agri Ltd | Tiverton | 2026 |
| HLJ27 Ltd | Carmarthen | 2016 |
| HLM Agri Limited | Newmarket | 2018 |
| HLM Trimming Services Ltd | Kilmarnock | 2024 |
| HLS Equine Therapy Ltd | Preston | 2022 |
| HM Beachell Ltd | Driffield | 2003 |
| HM Cuddon Forestry Limited | Eastbourne | 2017 |
| HM Hole Contracting Ltd | Wedmore | 2026 |
| HM Lukins & SON Limited | Wedmore | 2008 |
| HM Organic Chickens Limited | Lincoln | 2015 |
| HM Plant Ltd | Manchester | 2023 |
| HM365 Limited | Clifton | 2017 |
| HMA Ground Care Limited | Lancaster | 2021 |
| HME Cumbria Limited | Carlisle | 2023 |
| HMF Equestrian Limited | Huddersfield | 2018 |
| Hmhss Ltd | Ludlow | 2021 |
| HN Sinkler & SON Limited | East Yorkshire | 2003 |