| Havilah J&J Ltd | Information & communication | 2017 |
| Hawaa Empower CIC | Education | 2024 |
| Hawker Capital Ltd | Financial services | 2018 |
| Hawkes Accountancy Services Limited | Professional & scientific | 2024 |
| Hawkes Electrical Services Ltd | Construction | 2019 |
| HAWLER11 Ltd | Other services | 2025 |
| Hawthorns (Cranfield) Management Company Limited | Hospitality | 1991 |
| Hawton Property Ltd | Hospitality | 2019 |
| Hayat Envy Ltd | Wholesale & retail | 2021 |
| Hayat Property Group Ltd | Real estate | 2023 |
| Haybarns Management Ltd | Households | 2020 |
| Haycroft Residential Surveyors Ltd | Other services | 2021 |
| Haydon Court Freehold Limited | Real estate | 2015 |
| Haydor Ltd | Real estate | 2017 |
| Hayemaker Memorabilia Ltd | Wholesale & retail | 2022 |
| Hayes & Noel Limited | Financial services | 2025 |
| Hayes & Sons Meat and Wellness Limited | Wholesale & retail | 2025 |
| Hayes Management Company (Caldecote) Limited | Households | 2019 |
| Hayes Packaging Service Ltd | Manufacturing | 2023 |
| Hayleigh Louisa & Co Ltd | Professional & scientific | 2021 |
| Haylett Discovery Ltd | Professional & scientific | 2025 |
| Hayley & Marsh Consulting Limited | Information & communication | 2014 |
| Hayley's Hairdressing Limited | Other services | 2026 |
| Hayley's Walkies Ltd | Agriculture & fishing | 2021 |
| Haynes Technology Ltd | Information & communication | 2026 |
| Hayra International Limited | Hospitality | 2018 |
| Hayra International Private Ltd | Real estate | 2026 |
| Hayward and Whitby Ltd | Real estate | 2024 |
| Hayward Lane Beauty Ltd | Other services | 2009 |
| Hazel Tree Property Ltd | Real estate | 2020 |
| Hazelfield Homes Ltd | Health & social care | 2025 |
| Hazelstrine Partnership LLP | | 2020 |
| Hazera’S Scarves Ltd | Wholesale & retail | 2026 |
| HB Fish & Chips Ltd | Hospitality | 2024 |
| HB Food Hub Limited | Hospitality | 2026 |
| HB Services Ltd | Wholesale & retail | 2025 |
| Hbak Property Ltd | Construction | 2023 |
| HBB Factory Direct Ltd | Manufacturing | 2026 |
| HC Coverings Limited | Construction | 2017 |
| Hcuk Group Limited | Professional & scientific | 2013 |
| Hcuk Holdings Limited | Financial services | 2026 |
| HD Property Investments (Beds) Ltd | Real estate | 2025 |
| HD3 Limited | Other services | 2013 |
| HDB London Ltd | Administrative & support | 2017 |
| HDB Properties LLP | | 2008 |
| HDI Group Ltd | Wholesale & retail | 2024 |
| Hdpr Limited | Information & communication | 2026 |
| HE by Junior Limited | Other services | 2014 |
| Headfield Project Services Limited | Construction | 2008 |
| Headout Studio Ltd | Professional & scientific | 2020 |
| Headstart Group Ltd | Health & social care | 2025 |
| Health and Safety Culture Solutions Limited | Extraterritorial | 2023 |
| Health Insights 4U Limited | Information & communication | 2007 |
| Healthcare Placements Limited | Administrative & support | 2010 |
| Healthco Group Ltd | Wholesale & retail | 2025 |
| Healthcom Solutions Ltd | Wholesale & retail | 2023 |
| Healthe Limited | Administrative & support | 2015 |
| Healthy Board Services Ltd | Other services | 2014 |
| Heama Ltd | Real estate | 2024 |
| Heart Academies Trust | Education | 2009 |
| Heart to Heart Integrated Care Ltd | Health & social care | 2018 |
| Heartandseoul Ltd | Wholesale & retail | 2026 |
| Hearthstone and Harmony Ltd | Real estate | 2025 |
| Heas Haus Ltd | Construction | 2023 |
| Heat Harmoni Ltd | Wholesale & retail | 2025 |
| Heatus Limited | Manufacturing | 2015 |
| Heavenly Events Bedford Ltd | Hospitality | 2025 |
| Hebenika Ltd | Wholesale & retail | 2026 |
| Hector Enterprises Ltd | Wholesale & retail | 2017 |
| Hectr Ltd | Professional & scientific | 2019 |
| Hedley Flooring Ltd | Construction | 2016 |
| Hedlit Ltd | Professional & scientific | 2024 |
| HEE (UK) Ltd | Professional & scientific | 2022 |
| Heeley Enterprises Ltd | Real estate | 2009 |
| Hegarty's Carpentry Limited | Construction | 2026 |
| Hegsons Design Consultancy (UK) Limited | Professional & scientific | 2009 |
| Heidi Lambert Communications Ltd | Administrative & support | 1996 |
| Heirlooms Digital Limited | Information & communication | 2026 |
| Helen Flowers Ltd | Wholesale & retail | 2020 |
| Helen Smith HR & OD Consultancy Services Limited | Professional & scientific | 2010 |
| Helena Gabriel Holdings Limited | Financial services | 2021 |
| Helicopter Components Limited | Manufacturing | 2007 |
| Helimech Limited | Manufacturing | 2005 |
| Helios Solar Holdings Ltd | Financial services | 2022 |
| Helios Solar Installation Services Limited | Construction | 2025 |
| Helios Solar Maintenance Services Ltd | Construction | 2021 |
| Helios Solar Operations & Maintenance Ltd | Construction | 2018 |
| Helios Solar Panel Cleaning Services Limited | Administrative & support | 2025 |
| Helium Two Ltd | Wholesale & retail | 2024 |
| Helix and Conch Ltd | Wholesale & retail | 2019 |
| Hellencare Limited | Health & social care | 2021 |
| Hello August Limited | Wholesale & retail | 2015 |
| Hello Bambino Limited | Hospitality | 2026 |
| Hello Boothy Limited | Professional & scientific | 2016 |
| Help-Id Limited | Professional & scientific | 2023 |
| Helpful MJ Cleaning Services Ltd | Administrative & support | 2024 |
| Helpful Monika Ltd | Administrative & support | 2022 |
| Helping Hands Workforce Ltd | Administrative & support | 2025 |
| Helpline Group Ltd | Administrative & support | 2021 |
| Hema IT Solutions Ltd | Information & communication | 2025 |