| Henna Hamid Ltd | Real estate | 2023 |
| Hennessy Real Estate Ltd | Real estate | 2025 |
| Henry Brewer Gallery Limited | Arts & recreation | 2003 |
| Henry Davidson Developments (Holdings) Limited | Construction | 2016 |
| Henry Davidson Developments Limited | Real estate | 2015 |
| Henry Evans & Sons Family Funfairs & Attractions Limited | Arts & recreation | 2012 |
| Henry Homes Building and Electrical Contractors Ltd | Construction | 2018 |
| Henry Hospitality & Media Ltd | Hospitality | 2019 |
| Henry Ison & Sons Limited | Extraterritorial | 2004 |
| Henry Mein Partnership Ltd | Professional & scientific | 2018 |
| Henry Pynegar LLP | | 2025 |
| Henry Rendell Williams Limited | Information & communication | 2024 |
| Henry-Black Limited | Construction | 2025 |
| Henshaw's Properties Limited | Real estate | 2017 |
| Henson & Company Limited | Administrative & support | 1979 |
| Henson Aslam Wealth Management Ltd. | Financial services | 2012 |
| Henson Cantello Associates Limited | Professional & scientific | 2011 |
| Henson Homes & Property Solutions Ltd | Real estate | 2026 |
| Henson's Catering Limited | Hospitality | 2021 |
| Hentol Ltd | Real estate | 2025 |
| Henton & Chattell Limited | Wholesale & retail | 1959 |
| Hepburns Hair & Beauty Limited | Other services | 2012 |
| Hepworths Homes Ltd | Real estate | 2019 |
| HER Crowns Clothing Limited | Wholesale & retail | 2022 |
| HER Days Ltd | Hospitality | 2025 |
| HER Momentum Ltd | Professional & scientific | 2026 |
| Hera Property Holdings Ltd | Real estate | 2026 |
| Herb and HOE Co Ltd | Wholesale & retail | 2026 |
| Herbajan and Syndro Properties Limited | Real estate | 2016 |
| Herbert & Craven Limited | Professional & scientific | 2019 |
| Herbpams Limited Company Limited | Health & social care | 2014 |
| Herczeg Welding Ltd | Construction | 2018 |
| Herd Truro Ltd | Hospitality | 2024 |
| Hereford Infosec Limited | Professional & scientific | 2007 |
| Hereford VE Limited | Other services | 2007 |
| Heritage Care Group Limited | Health & social care | 2025 |
| Heritage Damp Solutions Ltd | Construction | 2021 |
| Heritage Deutschland Limited | Wholesale & retail | 1997 |
| Heritage Estates (Cockliffe) Limited | Hospitality | 2013 |
| Heritage Group of Companies Ltd | Financial services | 2024 |
| Heritage Hills Ltd | Real estate | 2024 |
| Heritage Penstock Repairs Limited | Construction | 2021 |
| Heritage Playing Card Company Ltd | Manufacturing | 1993 |
| Heritage Tenfour CIC | Education | 2024 |
| Heritage Touch Trading Limited | Wholesale & retail | 2023 |
| Herma Productos DE Limpieza Ltd | Extraterritorial | 2026 |
| Hermann Meditech Ltd | Wholesale & retail | 2024 |
| Hermanni Homes Limited | Real estate | 2026 |
| Hero Bidco Limited | Professional & scientific | 2023 |
| Hero Midco Limited | Professional & scientific | 2023 |
| Hero Productions Ltd | Manufacturing | 2025 |
| Hero Topco Limited | Professional & scientific | 2023 |
| Heroicus Limited | Wholesale & retail | 2025 |
| Heronridge Holdings Limited | Real estate | 2020 |
| Heronridge Homes Ltd | Real estate | 2022 |
| Heronridge Properties Ltd | Real estate | 2021 |
| Heronridge Services (Nottingham) Limited | Construction | 1992 |
| Herons Reach Bradford Limited | Real estate | 2017 |
| Herow Ltd | Transport & logistics | 2018 |
| Herrick Landscaping Limited | Administrative & support | 2012 |
| Herringate U.K. Limited | Construction | 2017 |
| Hesar Software Solutions Ltd | Information & communication | 2021 |
| Hesk Properties Ltd | Real estate | 2025 |
| Hesley Degill Limited | Professional & scientific | 2009 |
| Hestia Property Midlands Ltd | Real estate | 2021 |
| Heston Veterinary Services Ltd | Professional & scientific | 2019 |
| Hetman Marketing Ltd | Information & communication | 2024 |
| Hetman Physiques Limited | Arts & recreation | 2023 |
| Hettie & SID Limited | Wholesale & retail | 2024 |
| Heveran Bowman Payne Ltd | Wholesale & retail | 2018 |
| Hewes Holdings Ltd | Real estate | 2021 |
| Hewheat Roofing Ltd | Construction | 2014 |
| Hewitt Bike Works Ltd | Wholesale & retail | 2026 |
| Hewitt Technology Services Ltd | Professional & scientific | 2009 |
| HEX Consultancy Services Ltd | Professional & scientific | 2025 |
| HEX Productions Limited | Information & communication | 2015 |
| Hexa Consulting (North) Limited | Professional & scientific | 2023 |
| Hexa Consulting (South) Limited | Professional & scientific | 2022 |
| Hexa Consulting Limited | Professional & scientific | 2019 |
| Hexa Holdings Limited | Financial services | 2026 |
| Hexa Land Limited | Professional & scientific | 2022 |
| Hexagon Business Services Holdings Limited | Financial services | 2023 |
| Hexagon Business Services Limited | Administrative & support | 2013 |
| Hexagon Click Ltd | Wholesale & retail | 2024 |
| Hexagon Data Services Limited | Information & communication | 2019 |
| Hexagon Design Studios Ltd | Manufacturing | 2018 |
| Hexaroots Ltd | Wholesale & retail | 2025 |
| Hexbuy Limited | Wholesale & retail | 2025 |
| Hexis Events and Training Ltd | Arts & recreation | 2023 |
| Hextall Developments Holdings Limited | Financial services | 2020 |
| Hextall Holdings Limited | Real estate | 2018 |
| HEY Funeral Services Limited | Extraterritorial | 1978 |
| HEY Happy Soles Ltd | Wholesale & retail | 2025 |
| Heyclarus.Ai Limited | Information & communication | 2026 |
| Heydays Activity Hub CIC | Administrative & support | 2022 |
| Heydo Limited | Hospitality | 2026 |
| Heygen Ltd | Information & communication | 2026 |
| Heyhoo Limited | Hospitality | 2023 |
| Heymemo Ltd | Wholesale & retail | 2026 |
| HF Animal Rescue Center C.I.C. | Agriculture & fishing | 2026 |