| Hatchlink Systems Ltd | Information & communication | 2025 |
| Hatchmediafilm Ltd | Information & communication | 2026 |
| Hatfield and Anderson (Holdings) Ltd | Financial services | 2024 |
| Hatfield and Anderson Ltd | Real estate | 2019 |
| Hatfield Lane Barnby DUN Management Company Limited | Households | 2026 |
| Hatfield Offlicence Ltd | Wholesale & retail | 2025 |
| Hatfield Residential Developments Ltd | Construction | 2025 |
| Hatfields Riverside Ltd | Real estate | 2026 |
| Hatherley Homes Limited | Real estate | 2025 |
| Hathersage Developments Limited | Real estate | 2006 |
| Hathersage Services Limited | Construction | 2026 |
| Hatiphas Limited | Administrative & support | 2025 |
| Hatira City Living Ltd | Real estate | 2026 |
| Hatira Commercial Developments (HCD) Ltd | Real estate | 2024 |
| Hatira Holdings Limited | Wholesale & retail | 2005 |
| Hatira Property Group Ltd | Financial services | 2025 |
| Hatira Residential Properties (HRP) Ltd | Real estate | 2024 |
| Hatsoff Software Limited | Information & communication | 2019 |
| Hattersley Professional Services Limited | Information & communication | 2016 |
| Haultrans Ltd | Transport & logistics | 2025 |
| Haunted Promotions Ltd | Arts & recreation | 2023 |
| Haus Chesterfield Ltd | Real estate | 2024 |
| Haus Homes Estates Ltd | Real estate | 2016 |
| Haus Homes Lettings Ltd | Real estate | 2021 |
| Hause of Nails Ltd | Other services | 2019 |
| Hauz of Sean Ltd | Manufacturing | 2024 |
| Havana Guys Ltd | Wholesale & retail | 2024 |
| Havanor Private Limited | Wholesale & retail | 2022 |
| Haven Estates & Management Ltd | Real estate | 2016 |
| Haven Farm Management Limited | Households | 2015 |
| Haven House Project | Health & social care | 2003 |
| Haven Rental Solutions Ltd | Real estate | 2025 |
| HAVEN4U Ltd | Real estate | 2024 |
| Havenhand & Hudsons Ltd | Wholesale & retail | 2006 |
| Havenmere Health Care Limited | Health & social care | 2007 |
| Haverbrook Consulting Ltd | Professional & scientific | 2017 |
| Haverhill Grove Limited | Households | 2005 |
| Haveron Property Limited | Real estate | 2019 |
| Havila Eden Properties Ltd | Real estate | 2024 |
| Havoca Ltd | Administrative & support | 2025 |
| Hawa Delivery Solutions Limited | Transport & logistics | 2025 |
| Hawar International Store Limited | Wholesale & retail | 2025 |
| Hawbank Field Skipton Management Company Limited | Households | 2021 |
| Hawk Ridge Consulting Limited | Information & communication | 2025 |
| Hawk UK Traders Ltd | Construction | 2024 |
| Hawk Vision Pro Ltd | Wholesale & retail | 2025 |
| Hawkeye Rail Limited | Professional & scientific | 2014 |
| Hawkins & Co Consultancy Ltd | Professional & scientific | 2024 |
| Hawkins Distillery Ltd | Manufacturing | 2019 |
| Hawks Digital Labs Limited | Information & communication | 2022 |
| Hawksfold Ltd | Agriculture & fishing | 2026 |
| Hawkstur Homes Limited | Real estate | 2026 |
| Hawley Brothers Limited | Real estate | 2016 |
| Hawley Optical Limited | Manufacturing | 1996 |
| Hawley Optical Outlet Limited | Wholesale & retail | 2015 |
| Hawley Property Co Ltd | Real estate | 2015 |
| Hawley's Homes Ltd | Financial services | 2024 |
| Hawsker Holdings Ltd | Financial services | 2021 |
| Hawson Jefferies Limited | Professional & scientific | 1995 |
| Hawsons Limited | Professional & scientific | 1991 |
| Hawsons Wealth Management Limited | Financial services | 1998 |
| Hawthorn Management Consultancy Ltd | Professional & scientific | 2019 |
| HAX and FIG Ltd | Construction | 2025 |
| HAY Hill Leisure Ltd | Hospitality | 2026 |
| HAY Property Investments and Associates Ltd | Construction | 2025 |
| Hayatt Clinic Limited | Health & social care | 2024 |
| Haychn Ltd | Financial services | 2025 |
| Hayde Limited | Education | 2021 |
| Haydon Property Services Limited | Real estate | 2005 |
| Hayes Family Homes Ltd | Real estate | 2018 |
| Hayley Mungall Ltd | Information & communication | 2010 |
| Hayls Fit Ltd | Education | 2022 |
| Haystack Haven Holidays Ltd | Hospitality | 2024 |
| Haystead-Harvey BEN 0682 Limited | Transport & logistics | 2015 |
| Hayton Property Developments Limited | Construction | 2006 |
| Haytrade Ltd | Hospitality | 2023 |
| Haywhy Productions Limited | Hospitality | 2025 |
| Haywood & Co Financial Planning Limited | Financial services | 2004 |
| Haywood Architectural Ltd | Professional & scientific | 2023 |
| Haywood Gray Limited | Administrative & support | 2022 |
| HAZ Furnisher Ltd | Manufacturing | 2026 |
| Hazel Croft Road Management Company Limited | Real estate | 2018 |
| Hazel Landscaping Limited | Administrative & support | 2022 |
| Hazelgroveoliver Limited | Wholesale & retail | 2023 |
| Hazell Collective Ltd | Professional & scientific | 2024 |
| Hazell Collective Studio Ltd | Professional & scientific | 2025 |
| Hazels Catering Limited | Hospitality | 2023 |
| Hazelshaw Special Projects Limited | Construction | 2018 |
| Hazelthorne Investments Ltd | Real estate | 2025 |
| Hazh Investment Limited | Other services | 2012 |
| Hazlehead House Limited | Hospitality | 2019 |
| Hazy Club Limited | Hospitality | 2024 |
| HB Acorn Solutions Limited | Professional & scientific | 2019 |
| HB Island Limited | Extraterritorial | 2018 |
| HB Newington Limited | Administrative & support | 2020 |
| HB Origin Limited | Real estate | 2024 |
| HB Perspective Ltd | Construction | 2020 |
| HB Property Agency Ltd | Real estate | 2025 |
| HBA Future Energy UK Limited | Financial services | 2025 |
| HBA Property Investments Ltd. | Real estate | 2016 |