| Hebden Sound Limited | Manufacturing | 1998 |
| Hebun Pizza Limited | Hospitality | 2025 |
| Hedon Pizza Limited | Hospitality | 2023 |
| Heifer Productions Theatre Company Ltd | Education | 2022 |
| Heima (York) Ltd | Wholesale & retail | 2019 |
| Hel's Belle Ltd | Professional & scientific | 2025 |
| Helba Teulu Limited | Professional & scientific | 2017 |
| Helen Cammock Limited | Arts & recreation | 2019 |
| Helen Haulage Limited | Transport & logistics | 2020 |
| Helen Hounslow Associates Ltd | Professional & scientific | 2015 |
| Helen Scurrell Limited | Health & social care | 2015 |
| Helford Estates Limited | Real estate | 2006 |
| Helio Ekko Ltd | Wholesale & retail | 2024 |
| Helios Aura Ltd | Hospitality | 2025 |
| Helix Solar Ltd | Construction | 2021 |
| Helixsphere Systems Ltd | Extraterritorial | 2025 |
| Helles Belles Wedding Hire Limited | Other services | 2017 |
| Hello Advice Ltd | Financial services | 2020 |
| Hello Electrical Ltd | Construction | 2022 |
| Helm Business Services Limited | Professional & scientific | 2007 |
| Helmet Ltd | Wholesale & retail | 2025 |
| Hemen Car Wash Supply Ltd | Manufacturing | 2018 |
| Hemstone Properties Limited | Real estate | 2003 |
| Henderson Property Holdings Ltd | Real estate | 2016 |
| Henderson Transmissions Limited | Wholesale & retail | 2025 |
| Hendler Wholesale Ltd | Wholesale & retail | 2017 |
| Hendrik Antoon Limited | Professional & scientific | 2014 |
| Henjac Sales Ltd | Wholesale & retail | 2021 |
| Henri Becquerel Limited | Extraterritorial | 2014 |
| Henry Charles Property Ltd | Extraterritorial | 2022 |
| Henry Musker & Company Limited | Wholesale & retail | 1958 |
| Henry Williams Ltd | Information & communication | 2010 |
| Heoka Partners Limited | Professional & scientific | 2025 |
| Hepplewhite Kitchens Limited | Professional & scientific | 1990 |
| Hepworth Building Products (Holdings) Limited | Professional & scientific | 1922 |
| Heras Perimeter Protection Ltd | Construction | 1993 |
| Herb Pet Ltd | Wholesale & retail | 2019 |
| Herbaland Ltd | Wholesale & retail | 2025 |
| Herbert & Collins MK Ltd | Construction | 2024 |
| Herclean Team Ltd | Administrative & support | 2025 |
| Hercos Gym Ltd | Arts & recreation | 2024 |
| Herd Housing Ltd | Real estate | 2025 |
| Heritage Funeral Flowers Limited | Wholesale & retail | 2023 |
| Heritage Garden Studios Limited | Construction | 2021 |
| Heritage Gardenware Limited | Manufacturing | 2011 |
| Heritage Home Lettings Ltd | Real estate | 2025 |
| Heritage Living Group Limited | Construction | 2025 |
| Heritage Pubs 2 Limited | Hospitality | 2022 |
| Heritage Sound Collective CIC | Education | 2026 |
| Heron Vale Construction Ltd | Construction | 2026 |
| Herway Estates Ltd | Real estate | 2024 |
| Hesketh Properties Ltd | Real estate | 2014 |
| Hesley Care & Education Limited | Health & social care | 2004 |
| Hesley Hall Limited | Extraterritorial | 1974 |
| Hesley Holdings Limited | Health & social care | 2008 |
| Hesley Services Limited | Extraterritorial | 1986 |
| Hestercombes Manco Limited | Households | 2022 |
| Hestia Group Ltd | Real estate | 2021 |
| Hetherington Haulage Limited | Transport & logistics | 2015 |
| Hewitt Peace Group Ltd | Professional & scientific | 2023 |
| Heworth Green Property Limited | Financial services | 2021 |
| Hexad Homes Limited | Real estate | 2025 |
| Hexbow Limited | Water & waste | 2018 |
| Hexthorpe MOT Centre Ltd | Wholesale & retail | 2019 |
| Hexthorpe New Store Limited | Wholesale & retail | 2018 |
| Hexthorpe Super Store Limited | Wholesale & retail | 2026 |
| Heymark Limited | Administrative & support | 1978 |
| Heysofa Limited | Construction | 2018 |
| Heyup Motor Sales & Services Ltd | Transport & logistics | 2024 |
| Heywoods Hospitality Group Limited | Hospitality | 2022 |
| HF Smiles Ltd | Real estate | 2023 |
| HFB Limited | Extraterritorial | 1996 |
| HFP Marketing Ltd | Information & communication | 2022 |
| HGB Trading Ltd | Hospitality | 2017 |
| HGE Agri Services Limited | Transport & logistics | 2024 |
| HH Farming Limited | Agriculture & fishing | 2024 |
| HHS & MP Limited | Wholesale & retail | 2006 |
| HI Hotels (Mansfield) Ltd | Hospitality | 2020 |
| HI Muwallad AL Dawliya for Trading Ltd | Extraterritorial | 2026 |
| HI5 Properties Ltd | Real estate | 2026 |
| Hickey Decor Ltd | Construction | 2022 |
| Hicklings Funeral Service Limited | Other services | 1998 |
| Hickmans Cooked Meats Limited | Hospitality | 2015 |
| Hickory Construction and Services Limited | Construction | 2018 |
| Hide N Chic Ltd | Wholesale & retail | 2020 |
| Higgins Farms Limited | Extraterritorial | 1980 |
| High Court Warrants (Doncaster) Limited | Administrative & support | 2015 |
| High Demand Blocks 1 Limited | Real estate | 2026 |
| High Demand Hideaways Ltd | Hospitality | 2023 |
| High Demand Holdings Limited | Financial services | 2024 |
| High Demand Properties Ltd | Real estate | 2021 |
| High Dwelling Limited | Hospitality | 2025 |
| High Green View Limited | Real estate | 2007 |
| High Head Industries Limited | Professional & scientific | 2020 |
| High Meadows Investments Limited | Real estate | 2024 |
| High Melton Day Nursery Limited | Health & social care | 2023 |
| High Performance Tooling Limited | Manufacturing | 2026 |
| High Street Project Limited | Real estate | 2020 |
| Highams Homestead Ltd | Agriculture & fishing | 2024 |
| Higher Housing Ltd | Real estate | 2023 |