| Hela Ltd | Wholesale & retail | 2022 |
| Helcath Limited | Professional & scientific | 2015 |
| Helco Advisory Limited | Financial services | 2014 |
| Held in Light Ltd | Health & social care | 2022 |
| Helen 319 Limited | Hospitality | 2025 |
| Helen Aveyard Limited | Health & social care | 2014 |
| Helen Gott Limited | Professional & scientific | 2023 |
| Helen Hartley Consulting Ltd | Professional & scientific | 2021 |
| Helen Oates Consulting Limited | Administrative & support | 2015 |
| Helen Phillips Your Best Co. Limited | Professional & scientific | 2023 |
| Helex Limited | Health & social care | 2024 |
| Heli-Jet Limited | Transport & logistics | 2020 |
| Helical Building & Joinery Ltd | Construction | 2025 |
| Helicon Holt Limited | Financial services | 2018 |
| Helios Consortium LLP | | 2024 |
| Helium Two Storage Limited | Financial services | 2025 |
| Helivation Aviation Limited | Transport & logistics | 1995 |
| Heliwarns Aviation Ltd | Transport & logistics | 2015 |
| Helix Organisation Ltd | Construction | 2015 |
| Helix Tool Company Limited | Wholesale & retail | 1996 |
| Helj Properties Limited | Real estate | 2023 |
| Hellas Holdings Limited | Hospitality | 2019 |
| Hellenic AI Quantum and Mathematical Technologies Ltd | Other services | 2026 |
| Hellfire Gaming Ltd | Information & communication | 2022 |
| Helliwell Plumbing & Heating Ltd | Construction | 2021 |
| Hello Fare Ltd | Administrative & support | 2022 |
| Hello Finch Limited | Professional & scientific | 2013 |
| Hello Greenhouse Ltd | Other services | 2025 |
| Hello Human Ltd | Administrative & support | 2016 |
| Hello Japan Leeds Ltd | Wholesale & retail | 2025 |
| Hello Seoul Limited | Wholesale & retail | 2020 |
| Hello YOU! Lettings Limited | Real estate | 2024 |
| Hellohiphop CIC | Education | 2025 |
| Hellucy Limited | Real estate | 2015 |
| Hellyhansenonline Limited | Extraterritorial | 2008 |
| Helm Restorations Holdings Limited | Financial services | 2024 |
| Helm Restorations Limited | Construction | 2015 |
| Helmsley Hospitality Limited | Administrative & support | 2012 |
| Help Locks Ltd | Construction | 2015 |
| HELP365 Limited | Administrative & support | 2020 |
| HELP365 Properties Limited | Real estate | 2020 |
| Helpcare Ltd. | Health & social care | 2014 |
| Helpfix Limited | Construction | 2008 |
| Helping Hands Cleaning Service Limited | Administrative & support | 2020 |
| Helping Hands HCS Limited | Health & social care | 2004 |
| Helping Hearts and Minds Ltd | Health & social care | 2025 |
| Helping to Make a Difference Ltd | Professional & scientific | 2020 |
| Helping YOU Navigate CIC | Health & social care | 2025 |
| Helpingway Care Limited | Health & social care | 2026 |
| Helpme Digital Ltd | Information & communication | 2026 |
| Helpme Solutions Group Limited | Information & communication | 2025 |
| Helt Limited | Real estate | 2006 |
| Helumo Limited | Financial services | 2025 |
| Hemingway Costume Ltd | Professional & scientific | 2015 |
| Hemingway Homes Ltd | Real estate | 2025 |
| Hemjiu TAN Limited | Wholesale & retail | 2025 |
| Hemlock Property Management Ltd | Real estate | 2017 |
| Hemp Harvesters Ltd | Wholesale & retail | 2019 |
| Hemquin Limited | Wholesale & retail | 2021 |
| Hemram Ltd | Health & social care | 2014 |
| Hemswell (Holdings) Limited | Professional & scientific | 1968 |
| Hemsworths (Yorkshire) Ltd | Construction | 2024 |
| Henconner Lane Ltd | Manufacturing | 2021 |
| Henconner Lane Super Shiny Hand Car Wash Ltd | Administrative & support | 2025 |
| Henderbot Ltd | Information & communication | 2023 |
| Henderson Employee Benefits Limited | Financial services | 1966 |
| Henderson Healthcare Consultancy Limited | Extraterritorial | 2020 |
| Henderson Process Systems Limited | Manufacturing | 2004 |
| Henderson Surgical Ltd | Health & social care | 2020 |
| Hendry Consultants Limited | Administrative & support | 2016 |
| Heneghan & Sons Limited | Construction | 2002 |
| Heneghan Comms Limited | Construction | 2019 |
| Heneghan Holdings Limited | Construction | 2016 |
| Heneghan Homes Limited | Construction | 2017 |
| Heneghan Trustees Limited | Professional & scientific | 2024 |
| Henley Bridge Ingredients Limited | Wholesale & retail | 1998 |
| Henley Developments 210 Limited | Construction | 2019 |
| Henley James Group Ltd | Administrative & support | 2025 |
| Henley Marshall Ltd | Wholesale & retail | 2025 |
| Henley Ross Associates Ltd | Administrative & support | 2005 |
| Henly Homes Limited | Health & social care | 1997 |
| Henmark Caredirect Limited | Health & social care | 2021 |
| Henna by Sadaf Limited | Arts & recreation | 2019 |
| Henna Pharma Ltd | Professional & scientific | 2025 |
| Hennymoor House RTM Company Limited | Households | 2022 |
| Henri DU Luxe Group Ltd | Hospitality | 2019 |
| Henriksen Limited | Administrative & support | 2003 |
| Henry Boot Pension Trustees Limited | Administrative & support | 2016 |
| Henry C. Burrows Limited | Extraterritorial | 1958 |
| Henry Day & Sons,Limited | Manufacturing | 1920 |
| Henry F John Limited | Financial services | 2020 |
| Henry Gwilliam Ventures Limited | Real estate | 2015 |
| Henry Hyams Ltd | Professional & scientific | 2016 |
| Henry LAX (York) Limited | Real estate | 1995 |
| Henry LAX Limited | Construction | 1979 |
| Henshaw Business Services Limited | Administrative & support | 1975 |
| Henshaw Property Rentals Ltd | Real estate | 2017 |
| Hensons Decorators Limited | Construction | 2002 |
| Henthorpe Developments Ltd | Real estate | 2019 |
| Henton & Co (UK) Limited | Professional & scientific | 2008 |