| HJC Group Holdings Ltd | Financial services | 2023 |
| HJC Investments Ltd | Real estate | 2023 |
| HJC Property Developments Ltd | Construction | 2016 |
| HJC Property Portfolio Ltd | Real estate | 2023 |
| Hk&Cm Holdings Limited | Financial services | 2019 |
| HKD Healthcare Ltd | Health & social care | 2025 |
| HLA Engineering Ltd | Professional & scientific | 2024 |
| HM Alvechurch Ltd | Real estate | 2021 |
| HM Brickwork Ltd | Construction | 2023 |
| HM Property Investment (Mids) Ltd | Real estate | 2024 |
| HNH Consulting Limited | Information & communication | 2021 |
| Hoar Park Garden Centre Limited | Wholesale & retail | 2024 |
| Hollands Repair & Sales Ltd | Manufacturing | 2024 |
| Hollinshead & Wrighton Ltd | Agriculture & fishing | 2026 |
| Holly House Properties Limited | Real estate | 2012 |
| Hollyfield Fencing & Landscape Design Limited | Administrative & support | 2006 |
| Hollyfield Road Developments Ltd | Real estate | 2019 |
| Hollyhill Industries Limited | Extraterritorial | 2012 |
| Hollywell Farm Agricultural Ltd | Agriculture & fishing | 2021 |
| Holmes Estate Group Ltd | Real estate | 2025 |
| Home Aids (Development) Limited | Real estate | 1963 |
| Home Aids Limited | Professional & scientific | 1946 |
| Home and Yacht Automation Limited | Professional & scientific | 2023 |
| Home Feeling Limited | Wholesale & retail | 2015 |
| Homeacres Ltd | Construction | 2022 |
| Homeworks the Construction Solutions Limited | Construction | 2015 |
| Hong Kong & China Moulds Limited | Manufacturing | 2001 |
| Hooked & Cooked Ltd | Hospitality | 2025 |
| Hoole Property Group Ltd | Construction | 2026 |
| Hope Mens & Ladies Clothing Limited | Real estate | 1999 |
| Hopkins & Hopkins Limited | Financial services | 2025 |
| Hopwood Design & Creative Services Limited | Administrative & support | 2018 |
| Horizon MA Limited | Arts & recreation | 2025 |
| Horton Investments Ltd | Real estate | 2017 |
| Hough & Co. Limited | Professional & scientific | 2004 |
| House of Afower Ltd | Manufacturing | 2023 |
| House of Beauty Property Limited | Real estate | 2021 |
| House of Gough Limited | Real estate | 2025 |
| Howell Family Funerals Limited | Other services | 2021 |
| Howell Logistics Limited | Transport & logistics | 2016 |
| HPO Homes Ltd | Other services | 2024 |
| HPO Sales Limited | Other services | 2018 |
| HPS Hire Limited | Construction | 2017 |
| HPT Services Ltd | Transport & logistics | 2020 |
| HRH Future Ltd | Real estate | 2020 |
| Hssk Services Ltd | Real estate | 2024 |
| Hubcentre Limited | Wholesale & retail | 1982 |
| Hubwise Holdings Limited | Financial services | 2010 |
| Hubwise Nominees Limited | Extraterritorial | 2011 |
| Hubwise Securities Limited | Financial services | 2007 |
| Hubwise Services Limited | Financial services | 2011 |
| Hudson 7 Limited | Financial services | 2022 |
| Hughes Management Services Ltd | Real estate | 2025 |
| Hunnington Builders Limited | Extraterritorial | 2006 |
| Hunnington Developments Limited | Extraterritorial | 2006 |
| Hunnington Group Limited | Financial services | 2017 |
| Hunnington Limited | Construction | 1998 |
| Hunt Custom Bike Syndicate Ltd | Wholesale & retail | 2025 |
| Hunter Finance Limited | Administrative & support | 1986 |
| Hunter Mahan Holdings Ltd | Financial services | 2020 |
| Huntersfield Construction Limited | Construction | 2023 |
| Hupfield Design Services Ltd | Professional & scientific | 2025 |
| Hutchinson Carpets Limited | Construction | 2024 |
| Hwcf Service Ltd | Administrative & support | 2024 |
| Hyperlink One Ltd | Transport & logistics | 2026 |
| Hypernova Media Ltd | Professional & scientific | 2024 |
| I & I Built IT Ltd | Construction | 2026 |
| I Buy ANY Gold Limited | Wholesale & retail | 2021 |
| I.D. Stubbs Farming Limited | Agriculture & fishing | 2010 |
| I.S.P Catering Limited | Hospitality | 2011 |
| I3I Beta Limited | Hospitality | 2026 |
| I3I Limited | Hospitality | 2022 |
| Iain D Bradburne Limited | Transport & logistics | 2003 |
| IAN Hucklesby & Associates Limited | Professional & scientific | 2016 |
| Ibex Productions Ltd | Administrative & support | 2019 |
| Ibuild Midlands Limited | Construction | 2014 |
| Ice Media Production Company Limited | Information & communication | 2002 |
| Iceberg Property Limited | Real estate | 2018 |
| Icities (Dudley) Limited | Extraterritorial | 2023 |
| Icities (Trafford Park) Limited | Extraterritorial | 2023 |
| Icities Limited | Real estate | 2022 |
| Idle Minds Ltd | Professional & scientific | 2024 |
| Ifancyone.Com Limited | Wholesale & retail | 2011 |
| Ignis Fire Consultancy Limited | Professional & scientific | 2021 |
| Igniters Combustion Engineering Limited | Manufacturing | 1985 |
| Ignition Motorworks Ltd | Wholesale & retail | 2025 |
| Ignyt Digital Marketing Ltd | Professional & scientific | 2026 |
| IJD Dynamic Support Limited | Information & communication | 2023 |
| Ikon Aesthetics Limited | Extraterritorial | 2022 |
| Ilgot'N'Gane Ltd | Information & communication | 2024 |
| Image House Management Ltd | Real estate | 2021 |
| Imaginize Limited | Professional & scientific | 2017 |
| Imali Inc Ltd | Professional & scientific | 2026 |
| Imhotep Projects T/A Modern Mystery School UK & EU Limited | Education | 2018 |
| Immediate Impact Limited | Other services | 2017 |
| Impax Business Solutions Limited | Professional & scientific | 2025 |
| Implant Time Limited | Health & social care | 2018 |
| Impress Public Relations Ltd | Professional & scientific | 2022 |
| Improvelt Engineering Limited | Professional & scientific | 2016 |
| IN Bloom Drops Ltd | Manufacturing | 2019 |