| Health Management (Carlisle) Limited | Administrative & support | 1993 |
| Health Point Practice (Yorkshire) Limited | Health & social care | 2019 |
| Health Point Practice Limited | Health & social care | 2019 |
| Health Protection Awareness Limited | Professional & scientific | 2020 |
| Health Tech Social Limited | Information & communication | 2026 |
| Health-Connected Limited | Health & social care | 2012 |
| Healthcare & YOU Limited | Health & social care | 2015 |
| Healthcare 1ST Limited | Administrative & support | 2011 |
| Healthcare Connect Limited | Administrative & support | 2023 |
| Healthcare Distribution Direct Limited | Transport & logistics | 2011 |
| Healthcare Software Support CIC | Information & communication | 2017 |
| Healthcare Support (Newcastle) Finance PLC | Financial services | 2004 |
| Healthcare Support (Newcastle) Holdings Limited | Construction | 2002 |
| Healthcare Support (Newcastle) Limited | Construction | 2002 |
| HEALTHCARE4ALL Property Limited | Real estate | 2021 |
| Healthcareathletx Ltd | Education | 2020 |
| Healthilife Group Limited | Professional & scientific | 2018 |
| Healthiplate Ltd | Information & communication | 2024 |
| Healthwaite Limited | Professional & scientific | 2018 |
| Healthwatch Leeds Community Interest Company | Public administration | 2015 |
| Healthwiseleeds Limited | Administrative & support | 2017 |
| Healthy Life Labs Ltd | Health & social care | 2023 |
| Healthy PIE Ltd | Health & social care | 2023 |
| Heaney & Mill Limited | Hospitality | 2016 |
| Heapledge Holdings Limited | Real estate | 2015 |
| Hear Hear EAR Care Ltd | Health & social care | 2023 |
| Heart and GUT Health Partners Ltd | Health & social care | 2024 |
| Heart Internet Limited | Information & communication | 2023 |
| Heart Research Limited | Administrative & support | 2017 |
| Heart Research UK | Health & social care | 1995 |
| Heart Restarter Limited | Extraterritorial | 2011 |
| Hearter Property Holdings Ltd | Real estate | 2019 |
| Heartfelt Healing Limited | Health & social care | 2020 |
| Hearth & Stone Ltd | Real estate | 2017 |
| Hearth Foods Ltd | Hospitality | 2026 |
| Hearth Properties Ltd | Real estate | 2019 |
| Hearth Property Group Ltd | Real estate | 2025 |
| Heartrose Holdings Ltd | Financial services | 2026 |
| Heartwood Furniture Limited | Manufacturing | 2016 |
| Heat and Cool Air Conditioning Limited | Construction | 2017 |
| Heat Pump Parts UK Ltd | Wholesale & retail | 2024 |
| Heat Pump Tech Limited | Construction | 2017 |
| Heat Pumps and Air Conditioning Ltd | Wholesale & retail | 2005 |
| Heat Pumps Direct Limited | Construction | 2009 |
| Heat Sure Group Ltd | Construction | 2026 |
| Heatcore Limited | Construction | 2023 |
| Heateam Ltd | Construction | 2014 |
| Heath Grange Properties Limited | Real estate | 2021 |
| Heath Mount Medical Services Limited | Health & social care | 2015 |
| Heath Recruitment Limited | Administrative & support | 2019 |
| Heather Kealey Interiors Ltd | Professional & scientific | 2022 |
| Heather Louise Movement Ltd | Professional & scientific | 2025 |
| Heather Ryan Ltd | Information & communication | 2026 |
| Heather Scott Education & Leadership Consultancy Ltd | Education | 2014 |
| Heathfield (LOW Fell) Management Company Limited | Households | 1999 |
| Heathfield Properties (Yorkshire) Limited | Real estate | 2025 |
| Heaths Motorhome Ltd | Administrative & support | 2025 |
| Heaton Lodge Children's Nursery Limited | Education | 2011 |
| Heaton Lumb Lisle Limited | Extraterritorial | 1991 |
| Heaton Property 2018 Limited | Financial services | 2018 |
| Heaton Property Holdings Limited | Construction | 1965 |
| Heaton Wilson Roofing Limited | Construction | 2017 |
| Heaton Woods Commercial Finance Limited | Financial services | 2024 |
| Heatons (Leeds) Ltd | Wholesale & retail | 2025 |
| Heatons Plant Displays Limited | Agriculture & fishing | 2006 |
| Heatwave (Leeds) Limited | Financial services | 2022 |
| Heatwave GAS and Maintenance Ltd | Construction | 2025 |
| Heatwise Plumbing Limited | Construction | 2012 |
| Heaven Motors Ltd | Wholesale & retail | 2026 |
| Heaven's Touch Tattoo Ltd | Other services | 2026 |
| Heaveninfotech Ltd | Information & communication | 2025 |
| Heavenly Films Limited | Information & communication | 2011 |
| Heavenly Songs Limited | Extraterritorial | 2009 |
| Heavy D Haulage Ltd | Transport & logistics | 2023 |
| Heavy Limited | Information & communication | 2010 |
| Heavy Metal Football Ltd | Manufacturing | 2024 |
| Hebble Valley Weaving Limited | Manufacturing | 1922 |
| Hebden Catering Ltd | Hospitality | 2026 |
| Hebden Crafts Limited | Wholesale & retail | 2014 |
| Heck Recruitment Group Limited | Administrative & support | 2018 |
| Heckonner Limited | Construction | 2014 |
| Hecs Care Group Ltd | Health & social care | 2025 |
| Hector Francis Limited | Administrative & support | 2023 |
| HED Decorative Plaster and Home Improvements Ltd | Construction | 2021 |
| Hedd Psychological Services Ltd | Health & social care | 2026 |
| Hedgecroft Limited | Real estate | 2000 |
| Hedong Properties Development Limited | Real estate | 2016 |
| Hedonist Drinks Ltd | Hospitality | 2016 |
| Hedonist Group Ltd | Hospitality | 2015 |
| Heeley Inn Farm Limited | Wholesale & retail | 2020 |
| Heera Limited | Wholesale & retail | 2005 |
| Heggie & Ostrowski Limited | Administrative & support | 2021 |
| Hegz Hostings Limited | Real estate | 2019 |
| Hehd Property Management Ltd | Households | 2025 |
| Heidi Aiad Design Limited | Professional & scientific | 2026 |
| Height Lift & Shift Limited | Wholesale & retail | 2011 |
| Heim Ltd | Construction | 2021 |
| Heist Bar & Grill Limited | Hospitality | 2023 |
| Hekapath Ltd | Professional & scientific | 2024 |
| HEL (Realisations) 2026 Limited | Construction | 2009 |