| HTP Global Ltd | Financial services | 2025 |
| HTP Homes Limited | Real estate | 2025 |
| HTR Holdings Limited | Professional & scientific | 2026 |
| HTR International Holdings Ltd | Wholesale & retail | 2026 |
| Htrsales Limited | Wholesale & retail | 2023 |
| HUA XU Ltd. | Wholesale & retail | 2025 |
| Huaaz Ltd | Administrative & support | 2025 |
| Huallenac Trustee Company | Professional & scientific | 1963 |
| Huan Guang QIN Ltd. | Wholesale & retail | 2025 |
| Hubb Investment 101 Ltd | Real estate | 2019 |
| Hubert Holidays Ltd | Administrative & support | 2023 |
| Hubhunt Ltd | Wholesale & retail | 2025 |
| Hubtex (UK) Ltd | Manufacturing | 1999 |
| Hudd Housing Ltd | Real estate | 2021 |
| Hudson Design and Developments Limited | Construction | 2022 |
| Hugh Mathew-Jones Limited | Professional & scientific | 2013 |
| Hughes & Hughes Accounting Services Limited | Professional & scientific | 2015 |
| Hughes Network Systems Europe Limited | Information & communication | 2005 |
| Hughes Network Systems Holdings (UK) Limited | Information & communication | 2005 |
| Hughes Network Systems Limited | Information & communication | 2005 |
| Hughs Tools Ltd | Wholesale & retail | 2026 |
| HUI Zhen Ltd. | Wholesale & retail | 2025 |
| Huikang Healthcare Ltd | Health & social care | 2013 |
| Huitang Technology Co., Ltd | Information & communication | 2024 |
| HUK Consultancy Limited | Professional & scientific | 2020 |
| Human Capital Holdings Limited | Administrative & support | 2017 |
| Human Capital Ventures Limited | Administrative & support | 2013 |
| Human Resources Consulting Limited | Professional & scientific | 2011 |
| Human Resources Plus Limited | Administrative & support | 2004 |
| Humani Tree Ltd | Wholesale & retail | 2026 |
| Humble and Whole Ltd | Manufacturing | 2025 |
| Hummingbird Cars Ltd | Transport & logistics | 2025 |
| Hummingbird Investments Ltd | Real estate | 2014 |
| Humpage Technology Limited | Administrative & support | 2003 |
| Humphrey Milles Ltd | Professional & scientific | 2015 |
| Humqash Enterprise Ltd | Professional & scientific | 2014 |
| Hundred Spiders Ltd | Wholesale & retail | 2019 |
| Hunedoara Limited | Transport & logistics | 2024 |
| Hungrydeer Limited | Wholesale & retail | 2017 |
| Hunoa Limited | Wholesale & retail | 2025 |
| Hunsbury Hot Tubs Limited | Manufacturing | 2014 |
| Hunt Projects Ltd | Real estate | 2025 |
| Hunter Fire Solutions Ltd | Construction | 2016 |
| Hunters Chase Management (NO 1) Limited | Households | 1996 |
| Huntley Recruitment Group Limited | Professional & scientific | 2024 |
| HUQ That CIC | Arts & recreation | 2018 |
| Hurley Electrical Contractors Limited | Construction | 2007 |
| Hurlingham Homes (Buckinghamshire) Limited | Construction | 1998 |
| Hurry Slowly - Consulting Limited | Professional & scientific | 2015 |
| Hurstholt Ltd | Real estate | 2000 |
| Hurtwood Development Limited | Extraterritorial | 2014 |
| Hurtwood Polo Limited | Arts & recreation | 2014 |
| Husdon Housing Limited | Real estate | 2017 |
| Hussar Services Limited | Real estate | 2020 |
| HUSSEY119 Ltd | Wholesale & retail | 2025 |
| Husseys Wapping Lane Ltd | Wholesale & retail | 2008 |
| Hustle the Label Ltd | Wholesale & retail | 2021 |
| HUT1 Limited | Information & communication | 2015 |
| Hutag Ltd | Manufacturing | 1998 |
| Hutchinson Discount Limited | Financial services | 1955 |
| Huzal Ltd | Wholesale & retail | 2026 |
| Hvac Install Ltd | Manufacturing | 2024 |
| Hvac Problem-Solving Limited | Professional & scientific | 2022 |
| HW Home Development Ltd | Real estate | 2016 |
| HW Lamb Limited | Real estate | 2019 |
| Hxlproperty Ltd | Real estate | 2025 |
| Hyamow Ltd | Other services | 2024 |
| Hybrid Auto Centre MK Ltd | Wholesale & retail | 2023 |
| Hybrid Benefits Ltd | Professional & scientific | 2026 |
| Hybrid Carparts MK Limited | Wholesale & retail | 2022 |
| Hybrid New Media Ltd | Administrative & support | 2017 |
| Hyde Mill Limited | Real estate | 2005 |
| Hyde Park QA Ltd | Real estate | 2020 |
| Hydeline Furniture Ltd | Wholesale & retail | 2014 |
| HYDERABAD73 Ltd | Real estate | 2012 |
| Hyderabadchef Limited | Hospitality | 2024 |
| Hyderabadi Dhaba Limited | Hospitality | 2021 |
| Hyderabadi Food and Catering Limited | Hospitality | 2024 |
| Hydra International Ltd | Manufacturing | 2023 |
| Hydrafeed Holding Company Limited | Administrative & support | 2012 |
| Hydrafeed Limited | Manufacturing | 1990 |
| Hydrapress Services Limited | Wholesale & retail | 2010 |
| Hydro-Lining Limited | Construction | 2014 |
| Hydroforecast Ltd. | Other services | 2024 |
| Hydrogas Services Ltd | Construction | 2016 |
| Hydrogenia Ltd | Other services | 2023 |
| Hydrostor UK Ltd | Energy | 2024 |
| Hydrostore Ltd | Other services | 2023 |
| HYGEST2O Ltd | Other services | 2023 |
| Hygospit Ltd | Other services | 2024 |
| Hypebox Ltd | Information & communication | 2025 |
| Hyped Ltd | Professional & scientific | 2020 |
| Hyperlealta Limited | Financial services | 2025 |
| Hypertech Solutions Ltd | Information & communication | 2025 |
| Hypertransport Ltd | Transport & logistics | 2022 |
| Hypertunnel Holdings Limited | Financial services | 2020 |
| Hypertunnel Limited | Construction | 2018 |
| Hyperzoom Ltd | Administrative & support | 2000 |
| Hypnotic Art Ltd | Other services | 2019 |
| Hystat Systems Services Limited | Information & communication | 2026 |