| HJ Media Limited | Information & communication | 2007 |
| Hjmi Ltd | Administrative & support | 2015 |
| HJS Medical Services Ltd | Health & social care | 2021 |
| HK Realty Ltd | Real estate | 2024 |
| HKH Developments Ltd | Construction | 2025 |
| HKS Assets Ltd | Real estate | 2018 |
| HKS IT Consultants Ltd | Information & communication | 2013 |
| HL360 Maintenance East Limited | Professional & scientific | 2022 |
| HL360 Refurb ACB Ltd | Professional & scientific | 2022 |
| Hlessil Limited | Information & communication | 2015 |
| HM Vending Solutions Ltd | Wholesale & retail | 2026 |
| HMR Investments Limited | Real estate | 2020 |
| HMW Holdings Limited | Real estate | 2024 |
| HNA Pharma Limited | Health & social care | 2024 |
| Hogen Data Ltd | Information & communication | 2019 |
| Holistic Spirit Limited | Health & social care | 2024 |
| Hollowsphere AV Limited | Administrative & support | 2007 |
| Holme Distributions Limited | Wholesale & retail | 2026 |
| Holme Investments Ltd | Real estate | 2019 |
| Holmemade Limited | Manufacturing | 2025 |
| Holt Business Solutions Limited | Wholesale & retail | 2010 |
| Holt Workspace Ltd | Administrative & support | 2018 |
| Holtlettings Limited | Real estate | 2025 |
| Home Away From Home Limited | Real estate | 2016 |
| Home Living 360 Limited | Construction | 2019 |
| Home Living 360 MCR North Limited | Construction | 2022 |
| HOME4U Properties Ltd | Real estate | 2024 |
| Homely Lodgings Ltd | Real estate | 2016 |
| Homemade Hooks Ltd | Manufacturing | 2024 |
| Homes by Kemp Ltd | Real estate | 2022 |
| Homes Direct 365 Limited | Wholesale & retail | 2009 |
| Honeyblossom Bridal Limited | Wholesale & retail | 2016 |
| Hong Kong Netizen Limited | Manufacturing | 2022 |
| Honor Rogerson Ltd | Hospitality | 2025 |
| Hopuk Limited | Administrative & support | 2018 |
| Hopus Properties Ltd | Real estate | 2021 |
| Horizon Infinity Ltd | Real estate | 2026 |
| Horizon Innovate Ltd | Information & communication | 2023 |
| Horizon Interests Limited | Real estate | 2024 |
| Horizon IT Solutions Limited | Information & communication | 2011 |
| Horizon Power Developments Limited | Professional & scientific | 2023 |
| Horizon Power Group Limited | Professional & scientific | 2024 |
| Horizon Power Solutions Limited | Professional & scientific | 2018 |
| Hornbeam Management II Limited | Households | 1998 |
| Hornby Housing Limited | Real estate | 2021 |
| Horticulture Leisure Limited | Hospitality | 2018 |
| Host Offices Ltd | Real estate | 2025 |
| Hot Click Marketing Limited | Information & communication | 2015 |
| Hot Thai UK Limited | Hospitality | 2025 |
| Hot Thai Urmston Limited | Hospitality | 2026 |
| House of Follicles Ltd | Wholesale & retail | 2026 |
| House of Sun Properties Ltd | Real estate | 2024 |
| Houseoftinu Ltd | Other services | 2012 |
| Houses to Manage Ltd | Real estate | 2018 |
| Housn Property Group Ltd | Construction | 2024 |
| Howard & Seddon Limited | Professional & scientific | 2018 |
| Howard Taylor Group Ltd | Financial services | 2018 |
| Howarth Search Ltd | Administrative & support | 2025 |
| HRH Solutions Ltd | Professional & scientific | 2024 |
| HS Media Limited | Professional & scientific | 2003 |
| HS Online Ltd | Manufacturing | 2019 |
| HSA Properties Ltd | Real estate | 2013 |
| HSO CRM Solutions Limited | Information & communication | 2015 |
| HSO Customer Service Limited | Information & communication | 2010 |
| HSO Enterprise Solutions Limited | Information & communication | 2015 |
| HSO UK Holding Limited | Information & communication | 2015 |
| HSO UK Services Limited | Information & communication | 2021 |
| HSR Residential Ltd | Real estate | 2025 |
| HT Finance Ltd | Financial services | 2018 |
| Huaxia Investment Limited | Hospitality | 2012 |
| Huddlespace Limited | Manufacturing | 2008 |
| HUE Imbued Consultancy Limited | Professional & scientific | 2017 |
| Hugs Bakes & Cakes Limited | Wholesale & retail | 2025 |
| Hugs Properties Ltd | Real estate | 2023 |
| Hungamaa Express Limited | Hospitality | 2023 |
| Hungamaa Group Limited | Hospitality | 2022 |
| Hunky Dory Music Limited | Information & communication | 2005 |
| Hunky Dory Records Limited | Information & communication | 2026 |
| Hunnies&Herbs Ltd | Wholesale & retail | 2026 |
| Hunter Management Accountancy Limited | Professional & scientific | 2018 |
| Hunters 2023 UK Limited | Health & social care | 2023 |
| Hurfco Ltd | Administrative & support | 2020 |
| Hutton Roberts Limited | Health & social care | 2026 |
| HUZ Cloud Consultancy Ltd | Information & communication | 2026 |
| HWA Solutions Ltd | Information & communication | 2025 |
| HY Painting & Decoration Ltd | Construction | 2024 |
| HYB Ltd | Transport & logistics | 2015 |
| Hybrid Facilities Management Limited | Manufacturing | 2020 |
| Hyde Market House Ltd | Real estate | 2021 |
| Hydefort Ltd | Professional & scientific | 2020 |
| Hygienic Equipment Limited | Wholesale & retail | 2003 |
| Hyperfine Media Ltd | Information & communication | 2013 |
| Hysongreen Consulting Limited | Information & communication | 2021 |
| I&E Jones Ltd | Real estate | 2016 |
| I-Shine UK Limited | Information & communication | 2009 |
| I. S. D. Joinery Limited | Wholesale & retail | 2004 |
| I.R. Path Limited | Health & social care | 2019 |
| I22 Capital Limited | Hospitality | 2019 |
| IAN Barry Daniel GEE Limited | Financial services | 2024 |
| Iappuapp Limited | Information & communication | 2014 |