| Headspace FC Community Interest Company | Arts & recreation | 2025 |
| Headway Outdoor Learning CIC | Education | 2026 |
| Healey Management Ltd | Information & communication | 2025 |
| Healtea Limited | Wholesale & retail | 2025 |
| Health Bliss Ltd | Wholesale & retail | 2025 |
| Health Economics Pro Ltd | Professional & scientific | 2025 |
| Health Esteem Cleaning Services Limited | Administrative & support | 2025 |
| Health Systems Analytics Ltd | Professional & scientific | 2025 |
| Healthbridge Staffing Ltd | Administrative & support | 2025 |
| Healthcare Consultant Solutions Limited | Information & communication | 2024 |
| Healthcare IT Solutions Ltd | Information & communication | 2020 |
| Hear ME NOW Microsuction Ltd | Health & social care | 2026 |
| Hearing Wellness UK Ltd | Health & social care | 2024 |
| Heart & Home Interiors Ltd | Professional & scientific | 2026 |
| Heart 2 Heart Private Respite Limited | Health & social care | 2023 |
| Heart of Care Solutions Ltd | Education | 2021 |
| Heartbreak Studios Ltd | Wholesale & retail | 2020 |
| Heat Source GAS Services Ltd | Construction | 2025 |
| Heath House Farm Limited | Wholesale & retail | 2023 |
| Heath Investments Staffordshire Limited | Financial services | 2022 |
| Heath UK Limited | Administrative & support | 2008 |
| Heathcrest Healthcare Ltd | Health & social care | 2025 |
| Heating Hours Ltd | Construction | 2024 |
| Heatlit Ltd | Construction | 2024 |
| Heatwave Services Ltd | Construction | 2005 |
| Heaven (Alsager) Ltd | Hospitality | 2025 |
| Heaven UK Homes Ltd | Real estate | 2021 |
| Heavens Business Ltd | Wholesale & retail | 2025 |
| Heawardsports Ltd | Professional & scientific | 2017 |
| Hebbards Ltd | Wholesale & retail | 2022 |
| HED HQ Ltd | Administrative & support | 2026 |
| Helen Craster Psychotherapy Ltd | Health & social care | 2026 |
| Helenk Limited | Professional & scientific | 2007 |
| Helitz Digital Ltd | Information & communication | 2021 |
| Helix Horizon Ltd | Information & communication | 2024 |
| Helix Medical Limited | Wholesale & retail | 2020 |
| Hello Juice Ltd | Hospitality | 2025 |
| Help to Build Limited | Construction | 2019 |
| Helpful Hearts Limited | Public administration | 2021 |
| Helping Hands Medicals Limited | Health & social care | 2023 |
| Helping YOU at Home Ltd | Health & social care | 2024 |
| Helvic Limited | Professional & scientific | 2010 |
| HEM, Inc. Ltd. | Professional & scientific | 2025 |
| Hench Stoke Ltd | Hospitality | 2026 |
| Henge 3D Ltd | Professional & scientific | 2019 |
| Henley Cafe and Tea Rooms Ltd | Hospitality | 2023 |
| Henry Jade Property Limited | Real estate | 2025 |
| Henry Lowe Trading Ltd | Wholesale & retail | 2026 |
| Henshall Properties Limited | Real estate | 2016 |
| HER Path CIC | Administrative & support | 2026 |
| Heraldic Property Limited | Real estate | 2012 |
| Herbal Service Ltd | Other services | 2021 |
| Here Comes the Ride Ltd | Transport & logistics | 2022 |
| Here IS Home Ltd | Real estate | 2019 |
| Heritage Culture Communities Ltd | Professional & scientific | 2024 |
| Heritage Interiors Ltd | Construction | 2026 |
| Heritage Private Hire Ltd | Transport & logistics | 2023 |
| Heritage Shutters and Blinds Ltd | Wholesale & retail | 2024 |
| Hermitage Farm Holidays Ltd | Hospitality | 2021 |
| Heroic Media Limited | Information & communication | 2013 |
| Heron Close 1971 Limited | Extraterritorial | 2014 |
| Heron Cross Pottery Limited | Manufacturing | 2012 |
| Heron Domestics Limited | Manufacturing | 2007 |
| Heron Lettings Limited | Real estate | 2017 |
| Hersync Ltd | Information & communication | 2025 |
| Herven Limited | Information & communication | 2026 |
| Hery Cafe & Store Ltd | Hospitality | 2025 |
| Hetson Holmes Properties Ltd | Real estate | 2020 |
| Hetty's Tea Shop Limited | Hospitality | 2023 |
| HEV Rental Ltd | Transport & logistics | 2024 |
| Hewiee Holdings Limited | Financial services | 2024 |
| Hewitt & Carr Architects Limited | Professional & scientific | 2011 |
| Hewitt & Carr Developments Limited | Construction | 2014 |
| Hewitt & Carr Group Ltd | Financial services | 2019 |
| Hewitt & Carr Services Limited | Professional & scientific | 2019 |
| Hewitt Investments Limited | Real estate | 2021 |
| HEX & Halo Ltd | Wholesale & retail | 2025 |
| Heybridge Homes Ltd | Real estate | 2019 |
| Heywood Housing Limited | Real estate | 2016 |
| Hezzylizzy Solutions Limited | Information & communication | 2010 |
| HGV Solutions Ltd | Wholesale & retail | 2024 |
| HH Estates (1) Limited | Hospitality | 2020 |
| HH Estates (2) Limited | Arts & recreation | 2020 |
| HH Estates (3) Limited | Arts & recreation | 2020 |
| Hhayat Company Ltd | Health & social care | 2018 |
| Hhbc Ltd | Wholesale & retail | 2022 |
| HI Beauty NW Ltd | Wholesale & retail | 2026 |
| HI Looks Ltd | Construction | 2022 |
| Hi-Impact Limited | Education | 2010 |
| Hiccup Retail Ltd | Wholesale & retail | 2023 |
| Hidden Bar and Grill (Stoke) Ltd | Hospitality | 2025 |
| Hidderley's Farm Bookkeeping Limited | Professional & scientific | 2021 |
| Hideaway Media Limited | Information & communication | 2007 |
| Hideaway Studios Limited | Extraterritorial | 2016 |
| Hifred Limited | Other services | 2008 |
| HIG Limited | Professional & scientific | 2025 |
| Higgs Homes Limited | Construction | 2019 |
| High Access Solutions (UK) Ltd | Construction | 2010 |
| High and Lifted Ltd | Health & social care | 2023 |
| High Flame Heating Services Ltd | Construction | 2024 |