| Heathrow Park and Ride Limited | Administrative & support | 2017 |
| Heating & Ventilating Services (Nottingham) Limited | Construction | 1972 |
| Heating Homes Group Ltd | Construction | 1955 |
| Heaton Planning Limited | Professional & scientific | 2003 |
| Heatwave Haydock Limited | Wholesale & retail | 2024 |
| Heatwave Holdings Limited | Financial services | 2024 |
| Heatwave Warrington Limited | Wholesale & retail | 2024 |
| Heaven Helpers Limited | Administrative & support | 2003 |
| Heaven Interiors Ltd | Wholesale & retail | 2013 |
| Heaven Nails & Spa in Arnold Limited | Other services | 2025 |
| Heaven Scent Care Services Ltd | Health & social care | 2010 |
| Heavenly Beauty by Harriet Ltd | Other services | 2020 |
| Heavenly Leicester Ltd | Wholesale & retail | 2021 |
| Heavenly Nottingham Ltd | Wholesale & retail | 2021 |
| Heavenly Pamper Palace Ltd | Health & social care | 2021 |
| Heavenly Touch Care Limited | Public administration | 2022 |
| Heavenlys Animal Hotel Limited | Other services | 2009 |
| Heavenlys Pet Care Limited | Other services | 2025 |
| Heavenlys Pet Grooming Ltd | Other services | 2019 |
| Heavens to Betsy Ltd | Information & communication | 2017 |
| Heavy Teddy Ltd | Wholesale & retail | 2026 |
| HEB Properties Limited | Real estate | 2017 |
| HEB Surveyors (Nottingham) LLP | | 2014 |
| Heckler & Koch (UK) Limited | Manufacturing | 2001 |
| Hecleyliving Ltd | Wholesale & retail | 2025 |
| Hecoteck Ltd | Extraterritorial | 2020 |
| Hector White Investments Ltd | Real estate | 2025 |
| Hector's Farm Ltd | Agriculture & fishing | 2019 |
| Hector's Services Ltd | Professional & scientific | 2019 |
| Hectors Consultancy Ltd | Agriculture & fishing | 2014 |
| Hectors International Limited | Administrative & support | 2019 |
| Hectors Lettings and Property Management Ltd | Real estate | 2016 |
| HED Developments Limited | Construction | 2022 |
| Hedhoney Ltd | Wholesale & retail | 2024 |
| Hedra Medical Ltd | Health & social care | 2026 |
| Hefa Ltd | Wholesale & retail | 2022 |
| Hegarty Building Services Ltd | Construction | 2019 |
| Hegarty Care Limited | Health & social care | 2015 |
| Hegira Limited | Professional & scientific | 2019 |
| Height Solutions Scaffolding Nottingham Ltd | Construction | 2026 |
| Heimat Limited | Professional & scientific | 1966 |
| HEK Properties Ltd | Real estate | 2024 |
| Heko UK Property Limited | Real estate | 2017 |
| Hekon Ltd | Wholesale & retail | 2026 |
| Heland Properties Limited | Real estate | 2011 |
| Helen & Kate Ltd | Extraterritorial | 2013 |
| Helen Daft Consultant in Social Care Limited | Health & social care | 2013 |
| Helen Day Limited | Extraterritorial | 2005 |
| Helen Jebb Consultancy Limited | Professional & scientific | 2017 |
| Helen White Limited | Professional & scientific | 2024 |
| Helford River Construction Limited | Construction | 2019 |
| Helio Solar Ltd | Construction | 2024 |
| Heliocode Limited | Information & communication | 2025 |
| Helios Aviation Limited | Transport & logistics | 2025 |
| Helios Consulting Services Ltd | Information & communication | 2024 |
| Helios Roofing & Building Ltd | Construction | 2026 |
| Helix Auto Repair Ltd | Wholesale & retail | 2024 |
| Helix Holds Limited | Manufacturing | 2025 |
| Helix Strategy Consulting Limited | Professional & scientific | 2014 |
| Hell OR High Water Ltd | Hospitality | 2020 |
| Hellenic Cultural Productions Ltd | Arts & recreation | 2023 |
| Hellish Heaven Ltd | Wholesale & retail | 2026 |
| Hello Crafts Limited | Wholesale & retail | 2025 |
| Hello Marketplaces Ltd | Administrative & support | 2025 |
| Hello Online Ltd | Information & communication | 2018 |
| Hello Relocation Ltd | Extraterritorial | 2020 |
| Hello Takeaway Limited | Hospitality | 2019 |
| Hellogriff Ltd | Wholesale & retail | 2012 |
| Helly-Hansen (U.K.) Limited | Wholesale & retail | 1964 |
| Helm (Sellers Wood) Management Company Limited | Households | 1981 |
| Help at Home (Egerton Lodge) Limited | Health & social care | 1995 |
| Help for ALL Therapy Ltd | Health & social care | 2022 |
| HELP24HRS Ltd | Construction | 2019 |
| Helper Services Ltd | Administrative & support | 2020 |
| Helping Hands Home Support Limited | Health & social care | 2026 |
| Helping Kids Achieve Community Interest Company | Education | 2018 |
| Helpinghandssevices Ltd | Wholesale & retail | 2025 |
| Helpus Cashbooks Ltd | Professional & scientific | 2023 |
| Hemal Yella Limited | Real estate | 2018 |
| Heman Housing Sulution Ltd | Real estate | 2023 |
| Hemel Hempstead V.E. Limited | Other services | 1997 |
| Hemestate Ltd | Real estate | 2022 |
| Hemington Investments Group Holdings Limited | Real estate | 2020 |
| Hemisphere Homes Limited | Construction | 2013 |
| Hemisphere RP Ltd | Hospitality | 2023 |
| Hemming and Peace Limited | Extraterritorial | 2011 |
| Hemmingfields Hotels Ltd | Hospitality | 2013 |
| Hemp HQ (Ilkeston) Ltd | Wholesale & retail | 2019 |
| Hempshill Properties Limited | Financial services | 1964 |
| Hemraj Properties Limited | Real estate | 2025 |
| Hemsley House Childcare Limited | Education | 2003 |
| Hend Holdings Limited | Financial services | 2022 |
| Henderson and Crowe Holdings Limited | Professional & scientific | 2017 |
| Henderson Bro's FBA Limited | Wholesale & retail | 2025 |
| Henderson Electrical Projects Limited | Construction | 2017 |
| Henderson Westbridge Law Limited | Professional & scientific | 2025 |
| Heni Trans Ltd | Transport & logistics | 2018 |
| Henley Builds Ltd | Construction | 2023 |
| Henlieh Limited | Extraterritorial | 2020 |
| Henmans Freeth Executor & Trustee Company Limited | Professional & scientific | 2000 |