| Heatech (Heating Product Sales) Limited | Construction | 1999 |
| Heater Bands Ltd. | Professional & scientific | 2008 |
| Heatflow Tradesmen Ltd | Construction | 2024 |
| Heatflux GAS Services Ltd | Extraterritorial | 2023 |
| Heath 88 Limited | Hospitality | 2023 |
| Heath Farm Residents Management Company Limited | Households | 2017 |
| Heath Green Park Management Company Limited | Households | 2004 |
| Heath Industries Ltd | Construction | 2006 |
| Heath Meadow Management Company Limited | Real estate | 2020 |
| Heath Pizza Limited | Hospitality | 2025 |
| Heath Stores | | 1989 |
| Heath Trading Ltd | Wholesale & retail | 2026 |
| Heathcliff Properties Limited | Real estate | 2007 |
| Heather Court Management Company (Moseley) Limited | Households | 1979 |
| Heathfield Car Park Management Limited | Households | 2024 |
| Heathfield Estates Limited | Real estate | 1978 |
| Heathfield Housing Limited | Construction | 2021 |
| Heathfield Supported Living Limited | Health & social care | 2013 |
| Heathland Balti Ltd | Hospitality | 2024 |
| Heathland Consulting Ltd | Information & communication | 2019 |
| Heathrow Leonardo GP Limited | Real estate | 2015 |
| Heathstock Rise Residents Management Company Limited | Households | 2025 |
| Heathway Pharmacy Limited | Extraterritorial | 2002 |
| Heathway Pizza Ltd | Hospitality | 2025 |
| Heating and Plumbing Services Ltd | Construction | 2022 |
| Heating Electrical Supplies Ltd | Wholesale & retail | 2020 |
| Heating Pro Midlands Ltd | Construction | 2020 |
| Heatline UK Ltd | Construction | 2024 |
| Heatmap Clothing Limited | Wholesale & retail | 2026 |
| Heaton Advisory Limited | Professional & scientific | 2025 |
| Heaton Capital Ltd | Real estate | 2021 |
| Heaton Consultancies Ltd | Real estate | 2023 |
| Heaton Mint Limited | Extraterritorial | 2020 |
| Heaton Perk Ltd | Hospitality | 2022 |
| Heatplus Partnership Ltd | Construction | 2009 |
| Heatsafe GAS and OIL Installations Ltd | Construction | 2017 |
| Heatsense Ltd | Construction | 2024 |
| Heatwave Food Company Ltd | Hospitality | 2026 |
| Heaven Clean Limited | Construction | 2024 |
| Heaven Homes Holdings Ltd | Real estate | 2024 |
| Heaven Support Services Limited | Health & social care | 2022 |
| Heavenly Bargain Ltd | Wholesale & retail | 2025 |
| Heavenly Beds Outlet Erdington Ltd | Wholesale & retail | 2024 |
| Heavenly Beds Outlet Oldbury Ltd | Wholesale & retail | 2023 |
| Heavenly Creations Ltd | Hospitality | 2025 |
| Heavenly Grapes Limited | Real estate | 2017 |
| Heavenly Holdings Ltd | Financial services | 2026 |
| Heavenly Homes Property Ltd | Real estate | 2024 |
| Heavenly Living Ltd | Hospitality | 2024 |
| Heavenly Nails Ltd | Other services | 2024 |
| Heavenly P Ltd | Real estate | 2025 |
| Heavenly Riches Limited | Wholesale & retail | 2016 |
| Heavenly Spudz Ltd | Hospitality | 2024 |
| Heavenly Trading Limited | Wholesale & retail | 2026 |
| Heavy Duty General Transport Ltd | Wholesale & retail | 2019 |
| Heavy Haul Acquisitions Limited | Professional & scientific | 2004 |
| Heavy Haul Holdco Limited | Financial services | 2026 |
| Heavy Haul Maintenance Limited | Manufacturing | 2006 |
| Heavy Haul Middle East Limited | Transport & logistics | 2012 |
| Heavy Haul Rail Group Limited | Financial services | 2004 |
| Heavy Haul Rail Limited | Transport & logistics | 1999 |
| Heba Daycare Limited | Health & social care | 2020 |
| Hebden Ltd | Real estate | 2021 |
| Hebe Healthcare (Wednesbury) Ltd | Administrative & support | 2014 |
| Hebe Healthcare Holdings Ltd | Administrative & support | 2014 |
| Hebe Healthcare Limited | Health & social care | 2011 |
| Hebe Opco Ltd | Professional & scientific | 2005 |
| Hebei North Casting Europe Ltd | Wholesale & retail | 2024 |
| Hebron House Resettlement C.I.C. | Health & social care | 2015 |
| Hecato Ltd | Information & communication | 2025 |
| Heckington Project One Limited | Information & communication | 2016 |
| Hecoso Heating & Cooling Solutions Ltd | Wholesale & retail | 2019 |
| Hector Goldburg Associates Ltd | Professional & scientific | 2015 |
| Hector's Autos Ltd | Wholesale & retail | 2022 |
| HED Builders Ltd | Construction | 2020 |
| Hedaya Ltd | Education | 2024 |
| Hederson Real Estate Company Ltd | Real estate | 2021 |
| Hedge Capital Options Ltd | Real estate | 2010 |
| Hedge Limited | Wholesale & retail | 2018 |
| Hedgerow Valley Ltd | Administrative & support | 2022 |
| Hedgling Limited | Wholesale & retail | 2022 |
| Hedigan Construction Limited | Construction | 2016 |
| Hedingham AI Limited | Information & communication | 2022 |
| Hedingham Holdings Limited | Real estate | 2015 |
| Hednesford Town Holdings Ltd | Hospitality | 2023 |
| Hedshed Birmingham Limited | Other services | 2019 |
| Heer Group INT. Ltd | Wholesale & retail | 2025 |
| Heer Media Limited | Professional & scientific | 2026 |
| Heera Investments Ltd | Real estate | 2024 |
| Heera Transport Ltd | Transport & logistics | 2025 |
| Hegashall Limited | Wholesale & retail | 1991 |
| HEI Estates Limited | Real estate | 2021 |
| Heidemark Limited | Wholesale & retail | 2017 |
| Heidi's Bubble Magic Limited | Manufacturing | 2024 |
| Height Archies Limited | Construction | 2024 |
| Heights Limited | Administrative & support | 2025 |
| Heilbron & Foster Limited | Wholesale & retail | 1957 |
| Heirloom Estate Planning Ltd | Professional & scientific | 2025 |
| Heirloom Gold Ltd | Wholesale & retail | 2026 |
| Hejet Ltd | Wholesale & retail | 2025 |