| Hencha Holdings Ltd | Real estate | 2025 |
| Hencha Solutions Limited | Manufacturing | 2022 |
| Hendersons (Sheffield) Limited | Manufacturing | 1940 |
| Hendersons Holdings Limited | Professional & scientific | 2023 |
| Hendo Productions Limited | Arts & recreation | 2018 |
| Henfrey's Estates Ltd | Real estate | 2019 |
| Henley Construction Limited | Construction | 2023 |
| Henlin Limited | Professional & scientific | 2013 |
| Henry & Grant Ltd | Construction | 2024 |
| Henry Boot & Sons Limited | Professional & scientific | 2000 |
| Henry Boot 'K' Limited | Real estate | 2007 |
| Henry Boot (Launceston) Limited | Real estate | 2014 |
| Henry Boot (Manchester) Limited | Real estate | 2007 |
| Henry Boot Biddenham Limited | Real estate | 2006 |
| Henry Boot Construction Limited | Extraterritorial | 1987 |
| Henry Boot Cornwall House Limited | Construction | 2018 |
| Henry Boot Deansgate Limited | Construction | 2023 |
| Henry Boot Developments Limited | Construction | 1978 |
| Henry Boot Estates Limited | Real estate | 1933 |
| Henry Boot Group Services Limited | | 1958 |
| Henry Boot Homes Limited | Professional & scientific | 2003 |
| Henry Boot Investments 1 Limited | Real estate | 1995 |
| Henry Boot Land Holdings Limited | Real estate | 2002 |
| Henry Boot Leasing Limited | Administrative & support | 1996 |
| Henry Boot Nottingham Limited | Extraterritorial | 2013 |
| Henry Boot PLC | Professional & scientific | 1919 |
| Henry Boot Projects Limited | Construction | 1982 |
| Henry Boot Scotland Limited | Professional & scientific | 2000 |
| Henry Boot Swindon Limited | Real estate | 2007 |
| Henry Boot Tamworth Limited | Construction | 2006 |
| Henry Boot Wentworth Limited | Construction | 1982 |
| Henry Bramall & Co Limited | Professional & scientific | 2003 |
| Henry Hall (Display Fittings) Limited | Manufacturing | 1966 |
| Henry Hulley & Sons Limited | Transport & logistics | 1988 |
| Henry Merryweather & Sons Limited | Professional & scientific | 2007 |
| Henry Salt Limited | Wholesale & retail | 2024 |
| Henry Spencer & Sons Lettings Limited | Financial services | 2019 |
| Henry Spencer & Sons Limited | Real estate | 2008 |
| Henry Taylor (Tools) Limited | Manufacturing | 1973 |
| Henry's Support Services Ltd | Health & social care | 2020 |
| Henshaw Housing Limited | Professional & scientific | 2013 |
| Hephtec Automation Services Ltd | Manufacturing | 2017 |
| Heppenstall Homes Ltd | Real estate | 2022 |
| Heptagon Limited | Extraterritorial | 1995 |
| Heptagon Trustees Limited | Extraterritorial | 1996 |
| Heptra Ltd | Transport & logistics | 2012 |
| Hepworth Building Products (Services) Limited | Extraterritorial | 1897 |
| Hepworth Drive OFF Licence Store Limited | Wholesale & retail | 2018 |
| Hepworth Mechanical Ltd | Professional & scientific | 2026 |
| HER on a Hill Limited | Administrative & support | 2025 |
| Hera Flooring Limited | Construction | 2009 |
| Herano Studio Limited | Information & communication | 2025 |
| Herb Robert Limited | Manufacturing | 2020 |
| Herbal Minds Limited | Wholesale & retail | 2026 |
| Herbal Revolutions International Ltd | Wholesale & retail | 2025 |
| Herbarial.Net Ltd | Wholesale & retail | 2024 |
| Herbert Bray & Sons Limited | Manufacturing | 2000 |
| Herbert M. Slater (1853) Limited | Extraterritorial | 1990 |
| Herbie Productions Limited | Administrative & support | 2010 |
| Herbsgo Limited | Wholesale & retail | 2006 |
| Hercules Tools Limited | Professional & scientific | 1993 |
| Herd IT Consulting Ltd | Information & communication | 2022 |
| Here OR There Food Limited | Manufacturing | 2025 |
| Here Press Ltd | Information & communication | 2012 |
| Heries Ltd | Real estate | 2026 |
| Heritage Barker Holdings Limited | Financial services | 2026 |
| Heritage Classic Car Repairs & Sales Ltd | Wholesale & retail | 2025 |
| Heritage Collection Holding Company Limited | Professional & scientific | 2016 |
| Heritage Defenders GB Ltd | Wholesale & retail | 2022 |
| Heritage Dental Studio Ltd | Health & social care | 2026 |
| Heritage Development Building Services Ltd | Construction | 2024 |
| Heritage Developments and Construction Limited | Construction | 2024 |
| Heritage Doors & Floors Limited | Manufacturing | 2005 |
| Heritage Felipe Ltd | Real estate | 2024 |
| Heritage Fencing Limited | Construction | 2026 |
| Heritage Hygienist Ltd | Information & communication | 2022 |
| Heritage Lift Services Limited | Manufacturing | 2016 |
| Heritage Locomotive Holdings Limited | Administrative & support | 2004 |
| Heritage Locomotives Limited | Administrative & support | 2004 |
| Heritage Oaks Healthcare Limited | Administrative & support | 2015 |
| Hero Freight Ltd | Transport & logistics | 2024 |
| Hero Graphic Design Limited | Arts & recreation | 2018 |
| Hero of Health Ltd | Public administration | 2021 |
| Hero People Limited | Professional & scientific | 2016 |
| Hero Places Limited | Real estate | 2020 |
| Herocraft Ltd | Professional & scientific | 2013 |
| Heroes Parent Hub | Health & social care | 2025 |
| Heron Cabinets Ltd | Manufacturing | 2008 |
| Heron Publications Limited | Professional & scientific | 2002 |
| Heronsmere Developments Limited | Real estate | 2017 |
| Herries House Nursery Ltd | Other services | 2026 |
| Herring Investments Limited | Real estate | 2021 |
| Herring Property LLP | | 2023 |
| Herriott Petz Limited | Other services | 2007 |
| Herron Design Ltd | Professional & scientific | 2017 |
| Herschel Properties Limited | Real estate | 2023 |
| Herts Production Services Ltd | Arts & recreation | 2024 |
| Heruli Ltd | Manufacturing | 2024 |
| Hesed Limited | Health & social care | 2008 |
| Hessa the Label Ltd | Wholesale & retail | 2026 |