| Heritage Ventures Limited | Professional & scientific | 2013 |
| Hermitage Cottage Ltd | Real estate | 2021 |
| Herrera Homes Limited | Professional & scientific | 2019 |
| Hersh Group Global Ltd | Real estate | 2026 |
| Hersham Estates Ltd | Real estate | 2025 |
| Hertfordshire OIL Storage Limited | Transport & logistics | 1969 |
| Herz HIZ Limited | Wholesale & retail | 2018 |
| Hestban Estates Ltd | Extraterritorial | 2022 |
| Hetta Holdings Ltd. | Professional & scientific | 1998 |
| Hevon Properties MCR Ltd | Transport & logistics | 2021 |
| Hewitt Michaels Ltd | Arts & recreation | 2025 |
| Hexaflow Agency Limited | Information & communication | 2024 |
| Hexagon Solutions Limited | Real estate | 2004 |
| Hexolab Ltd | Information & communication | 2014 |
| Heyhi Ltd | Information & communication | 2024 |
| Heywood Properties Limited | Real estate | 1998 |
| HF Assistance Limited | Extraterritorial | 2023 |
| HF Bidco Limited | Financial services | 2024 |
| HF Holdco Limited | Financial services | 2024 |
| HF Limited | Professional & scientific | 2021 |
| HF Midco Limited | Financial services | 2024 |
| HF Topco Limited | Financial services | 2024 |
| Hf.Law Ltd | Extraterritorial | 2014 |
| Hfjt Limited | Health & social care | 2025 |
| Hfkl Ltd | Real estate | 2022 |
| HH Ecom Ltd | Wholesale & retail | 2024 |
| HH Limitless Limited | Wholesale & retail | 2025 |
| HI Trex Limited | Wholesale & retail | 2021 |
| Hi-Bond Limited | Administrative & support | 1998 |
| Hi-Life Ventures Ltd | Wholesale & retail | 2023 |
| High Mark Group Limited | Real estate | 2026 |
| High Street CRE Ltd | Real estate | 2021 |
| High Tower Ltd | Real estate | 2023 |
| Highbase Market Limited | Wholesale & retail | 2016 |
| Highcliffe Solutions Limited | Extraterritorial | 2019 |
| Higher Vibrations Creative Ltd | Manufacturing | 2023 |
| Highercliff Ltd | Wholesale & retail | 2017 |
| Highfield Road Estate Company NO.2 Limited | Other services | 2018 |
| Highfield Road Estate Limited | Other services | 2017 |
| Highfive Powered by HF Ltd | Information & communication | 2023 |
| Highgrove Builders Limited | Real estate | 1988 |
| Highgrove House Limited | Health & social care | 2021 |
| Highquote Limited | Professional & scientific | 1982 |
| Hilary Martin Limited | Manufacturing | 1982 |
| Hill of Rubislaw (Land Holdings) Limited | Extraterritorial | 2011 |
| Hill of Rubislaw (Q Seven) Limited | Extraterritorial | 2012 |
| Hill of Rubislaw (Royfold) Limited | Real estate | 2025 |
| Hillcrest Nominees Limited | Real estate | 2012 |
| Hillingdon International Limited | Professional & scientific | 1972 |
| Hillview Finance Limited | Financial services | 2024 |
| Hillview Management (London) Limited | Real estate | 2017 |
| Hillvilla Estates Limited | Extraterritorial | 2015 |
| Hilmas Superstore Ltd | Wholesale & retail | 2022 |
| Himma Food Ltd | Hospitality | 2026 |
| Himtony Limited | Professional & scientific | 2023 |
| Hinckley Estates Ltd | Other services | 2018 |
| Hing-Yan Ltd | Wholesale & retail | 2025 |
| HIP HIP Ltd | Wholesale & retail | 2022 |
| HIQ Deco Ltd | Manufacturing | 2024 |
| HIQ Global Ltd | Real estate | 2025 |
| HIS & Hedge Ltd | Professional & scientific | 2026 |
| Hishtadlus Housing Ltd | Real estate | 2021 |
| Hishtadlus M43 Ltd | Real estate | 2025 |
| Hishtadlus Parnusah Ltd | Construction | 2025 |
| Hishtadlus Properties SPV1 Ltd | Real estate | 2024 |
| Hishtadlus Properties SPV2 Ltd | Real estate | 2025 |
| Hishtadlus Properties SPV3 Ltd | Real estate | 2025 |
| HIT the North Talent Ltd | Arts & recreation | 2025 |
| Hitch Group Holdings Ltd | Professional & scientific | 2024 |
| Hitlineuk Limited | Wholesale & retail | 2015 |
| Hive Central Limited | Professional & scientific | 2019 |
| Hive Land & Planning Limited | Professional & scientific | 2018 |
| HJ Cleaning Services Limited | Administrative & support | 2025 |
| HJ Interpreting Limited | Administrative & support | 2012 |
| HJA Financial Management Services Limited | Financial services | 2023 |
| HJA Property Group Limited | Real estate | 2019 |
| HJA Source Ltd | Real estate | 2019 |
| HJS Architectural Design & Build Ltd | Construction | 2017 |
| HK Group Limited | Administrative & support | 2020 |
| Hktv Shopping Network (UK) Company Limited | Wholesale & retail | 2023 |
| HL Nqobile PVT Ltd | Health & social care | 2025 |
| HM Barber Shop (Salford) Limited | Other services | 2024 |
| HM Designing Limited | Wholesale & retail | 2026 |
| HM Enterprises MCR Ltd | Wholesale & retail | 2020 |
| HM Retail Managment Group Ltd | Wholesale & retail | 2025 |
| HM Urban Living Ltd | Real estate | 2025 |
| Hm&K Limited | Public administration | 2024 |
| Hmbc Marketing Ltd | Information & communication | 2024 |
| HMBHY2 Ltd | Real estate | 2025 |
| HMK Estates Limited | Real estate | 2022 |
| HMZ Services Limited | Professional & scientific | 2024 |
| HNF Foods Ltd. | Wholesale & retail | 2007 |
| HNW Estates Limited | Real estate | 2019 |
| Hoch Estates Ltd | Real estate | 2026 |
| Hockey Horse Ltd | Arts & recreation | 2026 |
| Hockley House 16 Ltd | Real estate | 2026 |
| Hockleynottingham Limited | Real estate | 2022 |
| Hoist Kredit Limited | Financial services | 2011 |
| Holan Consulting Ltd | Financial services | 2023 |
| Holdentime | Education | 2014 |