| Hurlingham Property Management Limited | Real estate | 2024 |
| Hurrell Associates Limited | Professional & scientific | 2015 |
| Hurricane Packaging Limited | Administrative & support | 2012 |
| Hurst Electrical Contractors Limited | Wholesale & retail | 1985 |
| Hurst Pension Trustees Limited | Financial services | 2020 |
| Hurt-Detal Limited | Wholesale & retail | 2021 |
| HUS Haus Limited | Construction | 2019 |
| Huskisson Shipping Limited | Transport & logistics | 1995 |
| Hussain & Sonz Limited | Other services | 2022 |
| Hussain Barbers Limited | Other services | 2026 |
| Hussain Capital Investment Ltd | Real estate | 2022 |
| Hussain Constructions Limited | Real estate | 2016 |
| Hussain Estates Ltd | Real estate | 2018 |
| Hussain Express Ltd | Hospitality | 2024 |
| Hussain Family Sweets Ltd | Wholesale & retail | 2025 |
| Hussain Fast Food Ltd | Hospitality | 2020 |
| Hussain Heritage Ltd | Real estate | 2025 |
| Hussain Management Partnership LLP | | 2016 |
| Hussain Properties Yorkshire Ltd | Real estate | 2019 |
| Hussain-Martinez Limited | Administrative & support | 2025 |
| Hussey Aviation Limited | Manufacturing | 2017 |
| Hustler (Leeds) Limited | Wholesale & retail | 2026 |
| Hutchinson Glass and Glazing Ltd | Construction | 2018 |
| Hutchinson Tate Networks Limited | Construction | 2021 |
| Hutelier Ltd | Wholesale & retail | 2025 |
| Hutty Walla Limited | Wholesale & retail | 2023 |
| Huttyeap Ltd | Wholesale & retail | 2026 |
| Huvirobo 2 Limited | Real estate | 2018 |
| Huvirobo Limited | Real estate | 2017 |
| HUX Digital Solutions Ltd | Wholesale & retail | 2024 |
| Huxt Ltd | Construction | 2007 |
| Hv-Lv Ltd | Professional & scientific | 2025 |
| Hvac Technical Solutions Ltd | Manufacturing | 2005 |
| HW Finance Limited | Administrative & support | 2024 |
| HW Medical Associates Limited | Health & social care | 2010 |
| HW Models Ltd | Wholesale & retail | 2020 |
| HW People Limited | Administrative & support | 2021 |
| HW Properties Development Ltd | Real estate | 2016 |
| HW Property Maintenace Ltd | Households | 2025 |
| HW Waverley (NO. 38) Limited | Extraterritorial | 1990 |
| HWH Enterprises Ltd | Wholesale & retail | 2024 |
| HWJ Holdings Limited | Financial services | 2018 |
| HWL Pet Supplies Limited | Wholesale & retail | 2022 |
| HWL Projects Ltd | Wholesale & retail | 2003 |
| HWL Trade Frames Limited | Manufacturing | 2003 |
| HWL Windows Group Limited | Manufacturing | 2015 |
| HWM Admin Services Ltd | Administrative & support | 2020 |
| Hwplumbingleeds Ltd | Construction | 2026 |
| HY Works Ltd | Information & communication | 2026 |
| Hyaico Ltd | Information & communication | 2025 |
| Hyar Investments Ltd | Financial services | 2021 |
| Hybd Co Ltd | Information & communication | 2022 |
| Hybrid Power (Leeds) Limited | Administrative & support | 2019 |
| Hybrid Recruit Ltd | Administrative & support | 2022 |
| Hyde Associates Limited | Financial services | 2003 |
| Hyde Bar Ltd | Hospitality | 2025 |
| Hyde Bathrooms Limited | Wholesale & retail | 2024 |
| Hyde Manchester Ltd | Wholesale & retail | 2025 |
| Hyde Park (Management) Limited | Households | 1990 |
| Hyde Park 2012 Legacy Limited | Arts & recreation | 2014 |
| Hyde Park Barbers Ltd | Other services | 2025 |
| Hyde Park Book Club Ltd | Hospitality | 2022 |
| Hyde Park Convenience Store Limited | Wholesale & retail | 2025 |
| Hyde Park Furniture Ltd | Wholesale & retail | 2015 |
| Hyde Park Hospitality Ltd | Hospitality | 2022 |
| Hyde Park Investments (Leeds) Ltd | Real estate | 2025 |
| Hyde Park Shawarma Ltd | Hospitality | 2021 |
| Hyde Park Tea Room Ltd | Hospitality | 2025 |
| Hyde Properties & Investments Ltd | Real estate | 2022 |
| Hyderabad Cuisine Ltd | Hospitality | 2023 |
| Hydes & Partners Ltd | Professional & scientific | 2025 |
| Hydra Group Limited | Wholesale & retail | 1980 |
| Hydra Manufacturing Limited | Manufacturing | 2024 |
| Hydra Plumbing and Heating Ltd | Construction | 2026 |
| Hydra Source Ltd | Manufacturing | 2023 |
| Hydranal Projects Limited | Real estate | 1984 |
| Hydraserve UK Limited | Manufacturing | 2012 |
| Hydraulic Analysis Limited | Professional & scientific | 2009 |
| Hydraulic Pressure Services Limited | Wholesale & retail | 1998 |
| Hydro Host Ltd | Information & communication | 2012 |
| Hydrogas Plumbing and Heating Ltd | Construction | 2022 |
| Hydrology Group Limited | Water & waste | 2017 |
| Hydromech Systems Limited | Manufacturing | 1976 |
| Hydropool UK Limited | Wholesale & retail | 2011 |
| Hydrospatial Limited | Professional & scientific | 2024 |
| Hydrotec Consultants Limited | Professional & scientific | 1998 |
| Hydrotec Developments Limited | Professional & scientific | 2021 |
| Hydrotherm Ltd | Manufacturing | 2017 |
| Hydrovitality Limited | Other services | 2025 |
| Hyena Lounge Limited | Arts & recreation | 2019 |
| Hyfacol Limited | Professional & scientific | 2023 |
| Hyfield Group Limited | Financial services | 2024 |
| HYG Holdings Limited | Financial services | 2020 |
| Hygeco Lear Limited | Other services | 1988 |
| Hyggigam Ltd | Real estate | 2019 |
| Hygienic Process Equipment Limited | Professional & scientific | 2014 |
| Hygo Developments Limited | Real estate | 2017 |
| Hygo DEVELOPMENTS1 Limited | Financial services | 2019 |
| Hyland Builders Limited | Construction | 1973 |
| Hyland Consultant Services Limited | Professional & scientific | 2025 |