| Hazelrigg Residents Management Company Limited | Households | 2019 |
| Hazelwood Accounting Services Ltd | Professional & scientific | 2015 |
| Hazledene Solutions Limited | Information & communication | 2021 |
| HB Power Solutions Ltd | Energy | 2025 |
| HBA Midlands Ltd | Households | 2026 |
| HBB SPV 1 Limited | Real estate | 2018 |
| HBB SPV2 Limited | Real estate | 2019 |
| HBL Property Ltd | Real estate | 2021 |
| HBM Property Ltd | Construction | 2025 |
| HBU Holdings Ltd | Financial services | 2024 |
| HBU Ltd | Construction | 2024 |
| HCF Raceways Ltd | Arts & recreation | 2025 |
| HCH Group Ltd | Financial services | 2025 |
| HCN Investments Ltd | Real estate | 2023 |
| HCS Business Consulting Ltd | Professional & scientific | 2025 |
| HD Brickwork (Derby) Limited | Construction | 2022 |
| HD Electrical & Maintenance Services Ltd | Construction | 2021 |
| HD Entertainment Ltd | Hospitality | 2019 |
| HDA Property Lettings Limited | Real estate | 2025 |
| HDA Property Limited | Real estate | 2015 |
| HDB Building Services Ltd | Construction | 2025 |
| HDP Pubs Ltd | Hospitality | 2021 |
| HDZ Property Group Limited | Real estate | 2022 |
| Head High Community Interest Company | Health & social care | 2017 |
| Head.Cee Ltd | Information & communication | 2024 |
| Headland Accountancy Company (the) Limited | Professional & scientific | 2025 |
| Headland Lettings Ltd | Real estate | 2019 |
| Headline Barbers Perth Limited | Other services | 2023 |
| Headset Hire Ltd | Administrative & support | 2026 |
| Headstart (Chester) Holdings Limited | Education | 2017 |
| Headstart (Chester) Limited | Education | 2001 |
| Headway Derby | Health & social care | 2003 |
| Healey Business Systems Limited | Information & communication | 2004 |
| Healfit Ltd | Health & social care | 2025 |
| Healing CIC | Public administration | 2025 |
| Health & Treat Care Ltd | Health & social care | 2025 |
| Health & Wealth Solutions Limited | Professional & scientific | 2020 |
| Health and Safety Compliance Services Limited | Health & social care | 2016 |
| Health Matrix Ltd | Real estate | 2020 |
| Health on Trent Ltd | Wholesale & retail | 2024 |
| Health Performance Psychology Ltd | Professional & scientific | 2022 |
| Health Protect Ltd | Administrative & support | 2020 |
| Healthcare Heritage Ltd | Administrative & support | 2022 |
| Healthcare Solutions 365 Ltd | Health & social care | 2020 |
| Healthier Workforce Limited | Administrative & support | 2014 |
| Healthwatch Derby | Health & social care | 2012 |
| Healthwire Group Limited | Wholesale & retail | 2025 |
| Healthwise Promotions Ltd | Wholesale & retail | 2025 |
| Healthy Connections Ltd | Administrative & support | 2017 |
| Healthy Homes Hub Ltd | Professional & scientific | 2024 |
| Healthy Stuff Group Limited | Financial services | 2022 |
| Healthy Success Limited | Wholesale & retail | 2014 |
| Heappey Construction Services Limited | Extraterritorial | 2014 |
| Hearn Care Homes Limited | Health & social care | 2002 |
| Heart and Home Kitchens Limited | Professional & scientific | 2025 |
| Heartbreaker Ltd | Wholesale & retail | 2025 |
| Hearthside Lettings Ltd | Real estate | 2023 |
| Heat Pump Central Ltd | Wholesale & retail | 2016 |
| Heat Wisely Ltd | Construction | 2025 |
| Heatbot Limited | Manufacturing | 2021 |
| Heatflowtech Ltd | Construction | 2024 |
| Heather & Georgie Ltd | Wholesale & retail | 2025 |
| Heather Frecklington Limited | Financial services | 2015 |
| Heather Grove Ltd | Real estate | 2025 |
| Heather Parker Limited | Financial services | 2020 |
| Heatherton Commercial Nominees Limited | Professional & scientific | 2022 |
| Heatherton Financial Management Limited | Financial services | 2008 |
| Heatherton Fish and Chips Limited | Hospitality | 2026 |
| Heatherton Performance Development Limited | Professional & scientific | 2013 |
| Heathlands (Sandbach) Estate Management Company Limited | Households | 2017 |
| Heathway 1963 Limited | Extraterritorial | 2014 |
| Heathy Wood Estate Management Company Limited | Households | 2018 |
| Heating Care Pro Ltd | Construction | 2025 |
| Heatingforce Ltd | Construction | 2025 |
| Heaton Group Ltd | Financial services | 2023 |
| Heatspan Limited | Manufacturing | 2025 |
| Heatwave Plumbing Services Ltd | Construction | 2021 |
| Heavenly Desserts Franchise Ltd | Wholesale & retail | 2016 |
| Heavenly Desserts Global Ltd | Professional & scientific | 2018 |
| Heavenly Desserts Ventures Ltd | Professional & scientific | 2016 |
| Heavenly Tiles Limited | Wholesale & retail | 2022 |
| Heavy Duty Ltd | Administrative & support | 2014 |
| Hebridean Homes Limited | Construction | 2024 |
| Hedera Screens Limited | Transport & logistics | 2007 |
| Hedley & Belle Ltd | Real estate | 2019 |
| Heelix Ltd | Health & social care | 2025 |
| Heer Heer Holdings Ltd | Financial services | 2021 |
| Heer Property Rental Ltd | Real estate | 2020 |
| HEF Home Ltd | Wholesale & retail | 2020 |
| HEF One Limited | Transport & logistics | 2025 |
| Heidi Gleadhill Limited | Financial services | 2012 |
| Heidi Stanley Therapy Limited | Other services | 2012 |
| Height Safety Ltd | Construction | 2026 |
| Heitman NDT Limited | Professional & scientific | 2016 |
| Hektors Vehicles and Parts Limited | Wholesale & retail | 2023 |
| Helen Fish Physiotherapy Ltd | Health & social care | 2012 |
| Helena Underwood Tongue TIE Practitioner Ltd | Health & social care | 2025 |
| Helian Properties Limited | Real estate | 2022 |
| Heliosx Limited | Construction | 2025 |
| Helix Computers Ltd | Wholesale & retail | 2020 |