| High Loop Ltd | Wholesale & retail | 2026 |
| High Rise Trade Corporation Co., Ltd | Administrative & support | 2025 |
| High Star Express Ltd | Manufacturing | 2025 |
| Highbits Ltd | Information & communication | 2025 |
| Highland Clouds Cottage Partnership LLP | | 2025 |
| Highland Clouds Glamping Partnership LLP | | 2025 |
| Highmond Ltd | Professional & scientific | 2024 |
| Highway Christian Church | Other services | 2005 |
| Highwoods Consulting Ltd | Professional & scientific | 2023 |
| Hikaru Network Ltd | Information & communication | 2024 |
| Hilary ANN Witter Ltd | Financial services | 2022 |
| Hill Canines Ltd | Agriculture & fishing | 2021 |
| Hill Zion Limited | Wholesale & retail | 2025 |
| Hillcrest Consultancy Services Limited | Professional & scientific | 2024 |
| Hillside Close (Harlington) Management Limited | Households | 2014 |
| Hillstone Court Management Co. 2001 Limited | Real estate | 2001 |
| Hilton Electrical Services Ltd | Construction | 2022 |
| Hilton Machine and Chemical Co (the) Limited | Manufacturing | 2022 |
| Himemy Network Ltd | Information & communication | 2022 |
| Himilcon Bay Ltd | Wholesale & retail | 2023 |
| Himodel International Co., Ltd | Administrative & support | 2012 |
| Hint Bgnn Trading Limited | Wholesale & retail | 2025 |
| Hinz Ltd | Wholesale & retail | 2026 |
| Hipdeer Technology Limited | Wholesale & retail | 2025 |
| Hipin Trade Ltd | Wholesale & retail | 2025 |
| Hiraeth Homes Ltd | Real estate | 2026 |
| Hireedge Careers Limited | Information & communication | 2025 |
| Hisaily Ltd | Extraterritorial | 2024 |
| Hisoa Building Materials Ltd | Administrative & support | 2024 |
| Hissen Music Online Ltd | Information & communication | 2025 |
| Hission Global UK Ltd | Professional & scientific | 2025 |
| Histeel Limited | Extraterritorial | 2018 |
| HIU Ying Beauty & Aesthetics Ltd | Other services | 2022 |
| Hiyee Ltd | Manufacturing | 2025 |
| HJT Motors Limited | Wholesale & retail | 2025 |
| HK Jinm Limited | Wholesale & retail | 2025 |
| HK Xinmei Group Limited | Administrative & support | 2023 |
| Hlma Ltd | Wholesale & retail | 2024 |
| HM Outlet Limited | Wholesale & retail | 2025 |
| HM Stephenson Limited | Professional & scientific | 2014 |
| Hobter Supply Ltd | Wholesale & retail | 2025 |
| Hochic Ltd | Extraterritorial | 2024 |
| Hodo Music Limited | Information & communication | 2018 |
| Hogushi Master Ltd | Wholesale & retail | 2026 |
| Hogwarts Vishwavidyalaya/Hakwart Palkalaikkadlakam/Universitas Hogwartensis/Jamieat Hujurtis/Hogwarts Universitat/Hoguwatsu Daigaku/Universidade DE Hogwarts Ltd | Education | 2025 |
| Hoiat Ltd | Financial services | 2025 |
| Hokow Ltd | Manufacturing | 2025 |
| Hola Media Ltd | Arts & recreation | 2024 |
| Holistic Business Solutions Ltd | Extraterritorial | 2023 |
| Holland Jack and K Microbiological Co., Ltd | Extraterritorial | 2024 |
| Holling Entertainment Ltd | Information & communication | 2025 |
| Holloway Trade Limited | Wholesale & retail | 2025 |
| Holly Thompson UK Limited | Information & communication | 2012 |
| Holomobiliity Limited | Wholesale & retail | 2025 |
| Holt Corp Limited | Other services | 2021 |
| Holy Light Foundation | Other services | 2025 |
| Holytime Ltd | Manufacturing | 2025 |
| Home & Family Ltd | Wholesale & retail | 2020 |
| Home and Commercial Limited | Real estate | 2021 |
| Home Pro Building Services Ltd | Construction | 2016 |
| Home Solar Ltd | Construction | 2023 |
| Home Sweet Home Property Limited | Real estate | 2022 |
| HOME2HOMEPROPERTYGROUP Ltd | Real estate | 2022 |
| Homeblood Phlebotomy Ltd | Health & social care | 2026 |
| Homeccas Remarketing Limited | Administrative & support | 2011 |
| Homein Door Limited | Manufacturing | 2022 |
| Homemaid Easy Ltd | Administrative & support | 2022 |
| Homeopoliss Estate 28 Ltd | Real estate | 2025 |
| Homeopoliss Ltd | Wholesale & retail | 2023 |
| Homeware & Garden UK Ltd | Wholesale & retail | 2024 |
| HOMEZY4 Ltd | Wholesale & retail | 2025 |
| Hominini Ltd | Information & communication | 2025 |
| Hominx Ltd | Wholesale & retail | 2025 |
| Homyhabor Limited | Wholesale & retail | 2026 |
| Honeera Ltd | Wholesale & retail | 2025 |
| Honest Earnings Ltd | Education | 2022 |
| Honest Holdings Ltd | Financial services | 2023 |
| Honey Badger Publishing Limited | Information & communication | 2015 |
| Honey Joy Paws Ltd | Manufacturing | 2026 |
| Hong Feng Co., Limited | Administrative & support | 2020 |
| Hong Kong Heli Trade Co., Ltd | Administrative & support | 2024 |
| Hong Kong HI Emily Jewellery Group Co., Ltd. | Extraterritorial | 2016 |
| Hong Kong Honors Industry and Trade Co., Limited | Wholesale & retail | 2024 |
| Hong Kong Minghui Trading Co., Ltd | Wholesale & retail | 2024 |
| Hong Kong Zhongqiao Trading Co., Ltd | Wholesale & retail | 2024 |
| Hong YA YAN Ltd | Wholesale & retail | 2025 |
| Hong Yannm International Co., Ltd | Administrative & support | 2025 |
| Hong'An Zeju E-Commerce Co., Ltd. | Wholesale & retail | 2023 |
| Hongchang Electronics Co., Ltd | Manufacturing | 2025 |
| Hongda Tyre Co., Ltd | Extraterritorial | 2015 |
| Hongdiey Ltd | Wholesale & retail | 2025 |
| Hongdiyi Ltd | Wholesale & retail | 2025 |
| Hongfeng Innovative Trading Co., Ltd. | Wholesale & retail | 2025 |
| Hongkong Thalia International Trading Co., Limited | Administrative & support | 2017 |
| Honglow Technologies Limited | Information & communication | 2025 |
| Hongruida Ltd | Manufacturing | 2025 |
| Hongxin Import and Export Trading Co., Ltd | Administrative & support | 2024 |
| Hongyu Minimalist Ltd | Wholesale & retail | 2025 |
| Hongzhilu Clothing Trade Co., Ltd | Administrative & support | 2023 |
| Hongzun Kitchenware Co., Ltd | Professional & scientific | 2024 |