| H&S Training Solutions Ltd | Education | 2018 |
| H&T MCR Ltd | Wholesale & retail | 2026 |
| H&T Plus Limited | Hospitality | 2021 |
| H&Tg Services Ltd | Health & social care | 2018 |
| H&U Homes Ltd | Real estate | 2025 |
| H&U Logistics Ltd | Transport & logistics | 2025 |
| H&U Technicals Limited | Wholesale & retail | 2025 |
| H&V Admin Ltd | Administrative & support | 2026 |
| H&Z Builders Ltd | Construction | 2019 |
| H&Z Manchester Limited | Wholesale & retail | 2019 |
| H-Lec Ltd | Construction | 2019 |
| H-Pan (Hope for the Poor and Needy) | Professional & scientific | 2007 |
| H. Eales & Sons Limited | Real estate | 1963 |
| H. H. Limited | Extraterritorial | 1952 |
| H. Lakew Electrical Installation Services Ltd | Extraterritorial | 2022 |
| H. Marcel Guest, Limited | Professional & scientific | 1930 |
| H. Ming Limited | Construction | 2012 |
| H. Overall Limited | Real estate | 1999 |
| H. Woodward & SON Limited | Professional & scientific | 1935 |
| H. Wright (1947) Limited | Construction | 2006 |
| H.A.L. Hair Limited | Other services | 2010 |
| H.Arora Properties Limited | Real estate | 2023 |
| H.B. Wainwright (Financial Services) Limited | Professional & scientific | 1986 |
| H.D.L.(Waterhouse)Limited | Wholesale & retail | 1965 |
| H.Dynasty Ltd | Wholesale & retail | 2025 |
| H.E. Leads Limited | Administrative & support | 2015 |
| H.F.L. Building Solutions Limited | Administrative & support | 2005 |
| H.Fraz Holdings Ltd | Real estate | 2026 |
| H.G. Bairstow (Monton) Limited | Real estate | 1936 |
| H.I. Auto Services Limited | Wholesale & retail | 2008 |
| H.J.Berry & Sons,Limited | Water & waste | 1947 |
| H.K Brambury Ltd | Wholesale & retail | 2025 |
| H.M Automative Ltd | Administrative & support | 2025 |
| H.P Private Practice Ltd | Health & social care | 2010 |
| H.P.A.S. Limited | Manufacturing | 1992 |
| H.Q Brows Ltd | Other services | 2014 |
| H.R Waste Ltd | Water & waste | 2023 |
| H.R. Retail Ltd. | Wholesale & retail | 2015 |
| H.S Skin Consultancy Ltd | Professional & scientific | 2024 |
| H.S.L Care Ltd | Health & social care | 2005 |
| H.S.R Housing Ltd | Real estate | 2026 |
| H.Smith and Sons(Tyldesley)Limited | | 1956 |
| H.T.R Properties Limited | Real estate | 2020 |
| H.T.White & Company,Limited | Wholesale & retail | 1927 |
| H.V. Commissioning Limited | Professional & scientific | 2006 |
| H13 Property Services Ltd | Professional & scientific | 2017 |
| H2 Brand Interests Limited | Financial services | 2024 |
| H2 Holdco 1 Limited | Financial services | 2024 |
| H20 Interiors Ltd | Construction | 2020 |
| H24LIFE Limited | Administrative & support | 2021 |
| H2A Consultant's Ltd | Professional & scientific | 2022 |
| H2FLOW Utilities Ltd | Water & waste | 2024 |
| H2GO Limited | Other services | 2017 |
| H2H Care Ltd | Health & social care | 2014 |
| H2M Cars Ltd | Administrative & support | 2022 |
| H2M Co Ltd | Real estate | 2019 |
| H2M International Ltd | Administrative & support | 2023 |
| H2O (Helping Humanity Optimise) Ltd | Financial services | 2025 |
| H2O Drywall Systems Ltd | Construction | 2010 |
| H2O Limited | Professional & scientific | 1997 |
| H2O Plumbing (NW) Limited | Construction | 2013 |
| H3 Property Ltd | Real estate | 2016 |
| H8 African Restaurant Ltd | Hospitality | 2025 |
| HA Apparel Ltd | Wholesale & retail | 2021 |
| HA Claims Ltd | Administrative & support | 2025 |
| HA Codes Limited | Information & communication | 2024 |
| HA Desserts Ltd | Hospitality | 2026 |
| HA Ecom Solutions Ltd | Wholesale & retail | 2025 |
| HA Energy Solutions Ltd | Wholesale & retail | 2025 |
| HA Paint and Decorators Ltd | Construction | 2025 |
| HA Pharma Care Ltd | Health & social care | 2025 |
| HA Pharma Consultancy Limited | Wholesale & retail | 2020 |
| HA Prime Consulting Ltd | Professional & scientific | 2025 |
| HA Property MCR Ltd | Real estate | 2020 |
| HA Smiles Ltd | Health & social care | 2023 |
| HA Trade Ltd | Wholesale & retail | 2026 |
| HA Traders MCR Limited | Wholesale & retail | 2023 |
| Ha&S Car Hire Ltd | Administrative & support | 2026 |
| HA11 Ltd | Real estate | 2024 |
| HA1R Ltd | Extraterritorial | 2023 |
| HA2 Apparel Ltd | Wholesale & retail | 2022 |
| HAA Healthcare Ltd | Health & social care | 2017 |
| HAA Investments Ltd | Real estate | 2023 |
| HAA Properties MCR Ltd | Real estate | 2021 |
| Haadi Limited | Professional & scientific | 2013 |
| Haadi Properties Ltd | Real estate | 2023 |
| Haadi Traders Ltd | Wholesale & retail | 2017 |
| Haajarah Masoud Ltd | Information & communication | 2024 |
| Haamitex Group of Industries Limited | Wholesale & retail | 2021 |
| Haani Goods Ltd | Wholesale & retail | 2026 |
| Haano UK Trading Ltd | Hospitality | 2026 |
| Haany UK Limited | Wholesale & retail | 2026 |
| Haas Alliance Limited | Real estate | 2024 |
| Haawa Fashion Ltd | Wholesale & retail | 2026 |
| Haazinfo Limited | Information & communication | 2021 |
| HAB Consult Ltd | Professional & scientific | 2018 |
| Habarts Limited | Arts & recreation | 2008 |
| Habco Properties Ltd | Real estate | 2020 |
| Habeeb Films Ltd | Professional & scientific | 2025 |
| Haben Autos Limited | Transport & logistics | 2024 |