| Hemlock Holdings Limited | Real estate | 2019 |
| Hemlock Labs Ltd | Administrative & support | 2025 |
| Hemlockhawk Limited | Real estate | 2026 |
| Hempstead Valley Acquisitions LP | | 2019 |
| Hempstead Valley Holdings Limited | Real estate | 2019 |
| Hempstead Valley Investments Limited | Real estate | 2019 |
| Hempstead Valley LLP | | 2019 |
| Hempthy Ltd | Manufacturing | 2021 |
| Hemran Limited | Real estate | 1989 |
| Hems Law and Properties Limited | Real estate | 2021 |
| Hemsworth Rawles Ltd | Real estate | 2025 |
| HEN Properties Ltd | Real estate | 2025 |
| Hena (Aberdeen) Limited | Hospitality | 2009 |
| Henan Caihua Refractories Industrial Co., Ltd | Wholesale & retail | 2020 |
| Henan Foremost Chem Co., Ltd | Extraterritorial | 2014 |
| Henbags & Gladrags Ltd | Extraterritorial | 2012 |
| Henbury Technology Holdings Limited | Extraterritorial | 2001 |
| Hencotes Property Ltd | Real estate | 2023 |
| Henderson Aviation Ltd | Administrative & support | 2026 |
| Henderson Houses Ltd | Real estate | 2022 |
| Henderson Scott International Group Limited | Professional & scientific | 2002 |
| Henderson Scott Limited | Administrative & support | 1998 |
| Hendesa Design Limited | Real estate | 2020 |
| Hendham Hotels Limited | Hospitality | 2019 |
| Hendham Rooms Limited | Hospitality | 2024 |
| Hendrix Rose Communications Ltd | Other services | 2023 |
| Heneghan's Civils Limited | Construction | 2018 |
| Henesy Holdings Limited | Financial services | 2021 |
| Henforth Ltd | Wholesale & retail | 2025 |
| Heng FEI Catering and Electrical Ltd | Other services | 2015 |
| Heng RUI Limited | Manufacturing | 2025 |
| Hengde Energy Ltd | Wholesale & retail | 2020 |
| Hengi Property Group Ltd | Real estate | 2024 |
| Henglifa Limited | Information & communication | 2021 |
| Hengshun Culture Media Ltd | Information & communication | 2025 |
| Hengxing Trade Ltd | Hospitality | 2025 |
| Hengyi Investment Ltd | Households | 2018 |
| Hengyi Trading Ltd | Wholesale & retail | 2025 |
| Hengyuan International Trading Co., Ltd | Wholesale & retail | 2025 |
| Hengyun Carbon Co., Ltd. | Wholesale & retail | 2021 |
| Henita UK Ltd | Hospitality | 2018 |
| Henland Estates Limited | Real estate | 2025 |
| Henley One Ltd | Wholesale & retail | 2025 |
| Henley TM Ltd | Construction | 2024 |
| Henlion Consultancy Limited | Professional & scientific | 2024 |
| Henlow Consultants Limited | Professional & scientific | 2023 |
| Henna Akbar Ltd | Wholesale & retail | 2025 |
| Hennakon IT Limited | Information & communication | 2006 |
| Hennessy International Limited | Information & communication | 2017 |
| Hennigan Property Group Limited | Construction | 2025 |
| Heno Direct Ltd | Transport & logistics | 2025 |
| Henosis Security Systems Ltd | Construction | 2019 |
| Henox Services Limited | Wholesale & retail | 2025 |
| Henribolu Ltd | Construction | 2019 |
| Henry Blue Ltd | Administrative & support | 2019 |
| Henry C Ltd | Hospitality | 2016 |
| Henry Gabriel Builders Limited | Construction | 2024 |
| Henry Horizon Trading Ltd | Wholesale & retail | 2025 |
| Henry JR Trading Limited | Wholesale & retail | 2025 |
| Henry Nuttall Limited | Manufacturing | 2004 |
| Henry Real Estate Limited | Real estate | 2023 |
| Henry Taylor Oncology Limited | Health & social care | 2021 |
| Henry Wallwork & Co. Limited | | 1920 |
| Henry's Medical Holdings Ltd | Financial services | 2026 |
| Henry's Medical Research Centres Ltd | Professional & scientific | 2026 |
| Henry's Medical Resource Centres Ltd | Health & social care | 2026 |
| Henrydavdan&Son Ltd | Wholesale & retail | 2020 |
| Henrys Removals Limited | Transport & logistics | 2004 |
| Hensark Ltd | Real estate | 2024 |
| Hensford Ltd | Other services | 2003 |
| Henshaw Logistics Ltd | Transport & logistics | 2019 |
| Henshaws Group Ltd | Financial services | 2023 |
| Henshaws Roofing and Building Supplies Ltd | Wholesale & retail | 1985 |
| Henshaws Society for Blind People Trustee Limited | Health & social care | 2012 |
| Henstock Property Services Ltd | Real estate | 2014 |
| Henville Road Management Limited | Households | 2009 |
| Henzomcr Ltd | Wholesale & retail | 2024 |
| Hepburn Accident Repair Centre Ltd | Wholesale & retail | 2018 |
| Hephaestus Forges Ltd | Manufacturing | 2022 |
| Hephkinngs Global Concepts Limited | Water & waste | 2025 |
| Hephzibah Catering & Domestic Services Ltd | Manufacturing | 2020 |
| Heps Bathroom & Heating Limited | Construction | 2020 |
| Heps Sellco Limited | Professional & scientific | 2018 |
| Heptagon Portfolio Arbroath Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Bishop Auckland (NO 2) Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Bishop Auckland Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Bolsover (NO 2) Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Bolsover Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Castle Douglas Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Pembroke (NO 2) Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Pembroke Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Rhyl (NO 2) Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Rhyl Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Thornbury (NO 2) Limited | Extraterritorial | 2017 |
| Heptagon Portfolio Thornbury Limited | Extraterritorial | 2017 |
| Heptagon Property Limited | Real estate | 2020 |
| Hepwear Limited | Manufacturing | 2020 |
| Hepworth Acoustics Limited | Professional & scientific | 1989 |
| Hepworth Acoustics Trustees Limited | Professional & scientific | 2015 |
| HER Circle Collective CIC | Health & social care | 2025 |