| Heartwood Care Ltd | Extraterritorial | 2010 |
| Heartwood Care Peterborough Limited | Other services | 2022 |
| Heartwood Care Services Ltd | Health & social care | 2025 |
| Heartwood Domiciliary Care Ltd | Administrative & support | 2010 |
| Heartwood Fostering Services Ltd | Extraterritorial | 2010 |
| Heartwood HRJ Limited | Other services | 2025 |
| Heartwood Outreach Services Ltd | Administrative & support | 2010 |
| Heartwood Residential Services Ltd | Administrative & support | 2010 |
| Heartwood RSC Ltd | Other services | 2018 |
| Heartwood RSL Ltd | Health & social care | 2019 |
| Heartwood RSR Limited | Other services | 2022 |
| Heartwood RSS Limited | Other services | 2021 |
| Heartwood RSW Ltd | Administrative & support | 2012 |
| Heartwood Seabrook Limited | Health & social care | 2023 |
| Heartwood Weston Hills Limited | Other services | 2023 |
| Hearuexperts Limited | Information & communication | 2016 |
| Heat Flow Limited | Construction | 2019 |
| Heat Plus Plumbing & Heating Ltd | Professional & scientific | 2026 |
| HEAT360 Ltd | Construction | 2020 |
| Heatcraft Limited | Construction | 1995 |
| Heatcraft Services Limited | Construction | 2025 |
| Heath Care Domiciliary Services Ltd | Health & social care | 2024 |
| Heath Care Services Ltd | Health & social care | 2018 |
| Heathbeam Limited | Manufacturing | 2009 |
| Heathway Freehold Limited | Real estate | 2026 |
| Heaven & Heaven Ltd | Wholesale & retail | 2019 |
| Heaven Hearts (PVT) Ltd | Wholesale & retail | 2025 |
| Heaven House London Limited | Real estate | 2021 |
| Heaven Things Ltd | Wholesale & retail | 2024 |
| Heaven Traders Ltd | Wholesale & retail | 2025 |
| HEAVEN7 Ltd | Construction | 2024 |
| Heavenly Coffee and Cakes Limited | Hospitality | 2021 |
| Heavenly Delights Ltd | Manufacturing | 2012 |
| Heavenly Domestic Appliances Ltd | Wholesale & retail | 2015 |
| Heavenly Linens Limited | Wholesale & retail | 2025 |
| Hebe Developments Limited | Construction | 2021 |
| Hebi International Ltd | Wholesale & retail | 2023 |
| Hector Interiors Limited | Professional & scientific | 2022 |
| Hedsor Property Investments Limited | Real estate | 2018 |
| Heeloon Ltd | Wholesale & retail | 2024 |
| Heena's Beauty Limited | Administrative & support | 2012 |
| Heer Accounting Ltd | Professional & scientific | 2021 |
| Heera Stone Limited | Real estate | 2009 |
| Hehr House Ltd | Real estate | 2023 |
| Helen Automotive Ltd | Wholesale & retail | 2021 |
| Helenic Health & Fitness Ltd | Arts & recreation | 2023 |
| Helios Consultancy Ltd | Professional & scientific | 2016 |
| Heller Electrical Services Ltd | Construction | 2021 |
| Hello BD Ltd | Professional & scientific | 2017 |
| Hello Reboot Limited | Administrative & support | 2022 |
| Hello Serving Ltd | Construction | 2025 |
| Hellopurewater Ltd | Wholesale & retail | 2025 |
| Hellowall Ltd | Information & communication | 2026 |
| Help (Hope for Endless Lives & Prosperity) Ltd | Health & social care | 2022 |
| Help for Persecuted Christians | Health & social care | 2013 |
| Help in Handz Limited | Other services | 2011 |
| Help IS Here Limited | Health & social care | 2023 |
| Help Medicine Limited | Health & social care | 2010 |
| HELP4BG Ltd | Professional & scientific | 2017 |
| HELPS7/24 Ltd | Public administration | 2025 |
| Heltons Car Repairs Ltd | Professional & scientific | 2025 |
| Hely Rose Limited | Real estate | 2018 |
| Hema Properties Limited | Construction | 2023 |
| Hemamaz Ltd | Wholesale & retail | 2020 |
| Hemdev Homes Ltd | Real estate | 2018 |
| Hemerine Limited | Wholesale & retail | 2010 |
| Hemley Zone Limited | Information & communication | 2023 |
| Hemp Harbour Ltd | Wholesale & retail | 2019 |
| Henderson Business Consultants Ltd | Professional & scientific | 2018 |
| Hendon Windsar Ltd | Information & communication | 2023 |
| Hendrix and Walker Ltd. | Professional & scientific | 2016 |
| Henex Tech Ltd | Wholesale & retail | 2025 |
| Henley Corporation Ltd | Real estate | 2018 |
| Henson Roofing Limited | Construction | 2014 |
| Herbal Care Ltd | Other services | 2026 |
| Herbal Spell Limited | Wholesale & retail | 2025 |
| Herbal Traditions Ltd | Wholesale & retail | 2014 |
| Herbvera Limited | Wholesale & retail | 2021 |
| Herclo Ltd | Wholesale & retail | 2024 |
| Herent Limited | Administrative & support | 2019 |
| Heretics Ltd | Professional & scientific | 2025 |
| Heris Huta Elite Ltd | Wholesale & retail | 2025 |
| Heritage Asian Ltd | Hospitality | 2025 |
| Heritage Capital Group Ltd | Financial services | 2026 |
| Heritage Chauffeurs Ltd | Transport & logistics | 2026 |
| Heritage CUT Limited | Information & communication | 2025 |
| Heritage Flooring and Accessories Ltd | Wholesale & retail | 2024 |
| Heritage Funeral Directors Ltd | Other services | 2021 |
| Heritage Furnishings Ltd | Wholesale & retail | 2024 |
| Herjit Ltd | Real estate | 2025 |
| Herman Fire Ltd | Construction | 2020 |
| Hernek Singh Ltd | Construction | 2020 |
| Herstoryconnects CIC | Education | 2026 |
| Herts Taverns Ltd | Hospitality | 2012 |
| Hesketh Property Partners Ltd | Real estate | 2020 |
| Hesson Ltd | Manufacturing | 2025 |
| Heston Hospitality Limited | Hospitality | 2014 |
| Hetton House RTM Company Limited | Households | 2020 |
| Heuristix Digital Technologies (UK) Limited | Information & communication | 2022 |
| Hexa Apps Ltd | Information & communication | 2025 |