| Hirani Property Solutions Ltd | Real estate | 2016 |
| Hirani Solutions Ltd | Professional & scientific | 2017 |
| Hire & Construction Ltd | Construction | 2019 |
| Hirst(Investments)Limited | Real estate | 1961 |
| Hirva Export Ltd | Wholesale & retail | 2024 |
| Hispace Limited | Construction | 2022 |
| History Associates Limited | Education | 2025 |
| Hitaki SPV 1 Limited | Real estate | 2025 |
| Hital Sanjay Estates Ltd | Real estate | 2026 |
| Hitansh Advisory Ltd | Professional & scientific | 2025 |
| Hitbit Limited | Construction | 2013 |
| Hitech PVT Ltd | Information & communication | 2020 |
| Hiten's Handyman Services Ltd | Other services | 2020 |
| Hitori Tech Limited | Wholesale & retail | 2023 |
| Hiusi Ltd | Financial services | 2019 |
| Hive Group Ltd | Construction | 2016 |
| Hivequest Ltd | Administrative & support | 2025 |
| Hiya Hygienist Limited | Health & social care | 2022 |
| Hiyan Ltd | Construction | 2025 |
| HIZ and Co Limited | Real estate | 2025 |
| HIZ Property Ltd | Real estate | 2026 |
| HJ Homes Limited | Construction | 2017 |
| HJD 2016 Limited | Transport & logistics | 2016 |
| HJE Developments Ltd | Real estate | 2019 |
| HJE Property Services Limited | Construction | 2024 |
| HJP Developments Ltd | Real estate | 2025 |
| HJP Media LLP | | 2015 |
| HJP Media London Limited | Information & communication | 2022 |
| HK Business Ltd | Wholesale & retail | 2013 |
| HK Cleaning Services Ltd | Administrative & support | 2026 |
| HK Design and Construction Ltd | Construction | 2021 |
| HK Estate Services Ltd | Real estate | 2026 |
| HK Grewal Ltd | Health & social care | 2025 |
| HK in Albion C.I.C. | Education | 2025 |
| HK Inventure Ltd | Real estate | 2026 |
| HK Universe Limited | Wholesale & retail | 2016 |
| HK10 Limited | Hospitality | 2014 |
| HKJ Holdings Limited | Real estate | 2022 |
| HKL Real Estates Ltd | Real estate | 2025 |
| HKM Props Limited | Real estate | 2025 |
| HKS Invest Ltd | Real estate | 2021 |
| HKS Manpower Group Ltd | Construction | 2019 |
| HL Build Ltd | Construction | 2025 |
| HL Client Services Ltd | Transport & logistics | 2025 |
| HL Property Consultants Ltd | Real estate | 2024 |
| HL Trade Ltd | Wholesale & retail | 2025 |
| HLG (UK) Ltd | Administrative & support | 2009 |
| HLG Removals Limited | Transport & logistics | 2021 |
| HLO Investors Ltd | Real estate | 2022 |
| HLS Xotic Modern Fit Limited | Wholesale & retail | 2025 |
| HM Consultants Ltd | Information & communication | 2007 |
| HM Health Limited | Health & social care | 2021 |
| HM Homes Ltd | Real estate | 2017 |
| HM Renewai Limited | Professional & scientific | 2025 |
| HM Technology International Limited | Information & communication | 1991 |
| HM Vekaria Ltd | Real estate | 2019 |
| HM Wholesale Supplies Limited | Wholesale & retail | 2017 |
| Hm-It 4U Limited | Information & communication | 2022 |
| HMA Locum Services Ltd | Health & social care | 2024 |
| HMI Construction Ltd | Construction | 2023 |
| HMO & Selective Licence Compliance Ltd | Professional & scientific | 2021 |
| HMO Kingdom Limited | Real estate | 2025 |
| HMP Investments Ltd | Real estate | 2021 |
| HMS Drinks Ltd | Wholesale & retail | 2023 |
| HMS Securities Limited | Real estate | 2014 |
| Hmsbm Leasing Ltd | Real estate | 2020 |
| HN Food & Wine Limited | Wholesale & retail | 2010 |
| HN Investment Services Limited | Real estate | 2017 |
| HN MOT Centre Ltd | Wholesale & retail | 2012 |
| HN News (Bushey) Limited | Wholesale & retail | 2017 |
| HN1 Films Ltd | Information & communication | 2022 |
| HNA Trading Ltd | Extraterritorial | 2012 |
| HNB Capital Investments Ltd | Administrative & support | 2021 |
| HNB Holding Ltd | Financial services | 2021 |
| Hndc Ltd | Information & communication | 2024 |
| HNK Investments Limited | Financial services | 2016 |
| HNK Property Investments Ltd | Real estate | 2026 |
| HNL Mortgages Limited | Financial services | 2025 |
| Hnmp Ltd | Manufacturing | 2025 |
| HNS Infotech Limited | Information & communication | 2018 |
| HO Electrical Ltd | Construction | 2025 |
| HO Kepos Ltd | Health & social care | 2022 |
| Hobart Place Residents Association Limited (the) | Households | 1972 |
| Hobo Pictures Ltd | Information & communication | 2015 |
| Hoboken Limited | Administrative & support | 2016 |
| Hobresidential Ltd | Construction | 2015 |
| Hodgson and Daughters Property Ltd | Real estate | 2019 |
| Hodgson Group Ltd | Construction | 2014 |
| Hodgson Roofing Services Ltd | Construction | 2025 |
| Hog's Back Trading Ltd | Wholesale & retail | 2022 |
| Hogg Estates Limited | Real estate | 2004 |
| Hoihoisakusaku Limited | Information & communication | 2015 |
| Hokus Bogus Limited | Information & communication | 2010 |
| Hola Gadgethub Ltd | Wholesale & retail | 2025 |
| Hola Productions Limited | Information & communication | 2006 |
| Holcad Marine Limited | Extraterritorial | 2013 |
| Holdan Homes Ltd | Real estate | 2017 |
| Holden Analytics Ltd | Information & communication | 2016 |
| Holder Tune Ltd | Administrative & support | 2022 |
| Holderspro Limited | Real estate | 2022 |