| Harrison Occupational Services Ltd | Health & social care | 2024 |
| Harrison Pups Ltd | Agriculture & fishing | 2022 |
| Harrison's Fund Limited | Professional & scientific | 2011 |
| Harrys Coffee Limited | Hospitality | 2018 |
| Harshdeep Transport Ltd | Transport & logistics | 2026 |
| Hart Ball Homes Ltd | Real estate | 2019 |
| Hart to Hart Homes Limited | Real estate | 2024 |
| Hartbeat Community Action Limited | Real estate | 2007 |
| Hartless VFX Limited | Information & communication | 2012 |
| Hartnell’S Roofing Limited | Construction | 2025 |
| Hartshill Court (Ferndown) Maintenance Company Limited | Households | 1972 |
| Hartwell Projects Limited | Construction | 2016 |
| Harvest Apartments Ltd | Construction | 2025 |
| Harvestvale Investments Ltd | Real estate | 2022 |
| Harvey Sykes Ltd | Construction | 2003 |
| Harveys Westbourne Limited | Hospitality | 2025 |
| Harveys&Jcm Limited | Public administration | 2023 |
| Hasdag Limited | Hospitality | 2025 |
| HASHTAG5 Limited | Extraterritorial | 2019 |
| Haslam Engineering Limited | Professional & scientific | 2009 |
| Hassales Ltd | Wholesale & retail | 2024 |
| Haste Hill Golf Centre Ltd | Administrative & support | 2024 |
| HAT Consultants Limited | Financial services | 2018 |
| Hatcham Capital Limited | Real estate | 2022 |
| Hatman Books Ltd | Information & communication | 2024 |
| Hatton Watches Ltd | Wholesale & retail | 2019 |
| Haumea International Ltd | Health & social care | 2026 |
| Haus Male Grooming Ltd | Other services | 2019 |
| Hausch Energy Ltd | Information & communication | 2021 |
| Havana Beach House Ltd | Hospitality | 2020 |
| Haven Court Owners Association Limited | Households | 1986 |
| Haven Heights (Canford Cliffs) Management Limited | Households | 1995 |
| Haven Hotel (Sandbanks) Limited | Hospitality | 2024 |
| Haven Road Management Company Ltd | Real estate | 2009 |
| Haven Specialist Recruitment Ltd | Wholesale & retail | 2025 |
| Haven Wills & Protection Ltd | Information & communication | 2022 |
| Havenhurst Residents Association Limited | Households | 1977 |
| Havenlodge Properties Limited | Construction | 2005 |
| Havershams Shutters Ltd | Professional & scientific | 2018 |
| Havillah Group Ltd | Manufacturing | 2025 |
| Havora Group Ltd | Wholesale & retail | 2025 |
| Hawk Estates Ltd | Real estate | 2015 |
| Hawkes Marine Limited | Financial services | 2024 |
| Hawkhurst Management Limited | Households | 2022 |
| Haworth Civil Engineering Limited | Construction | 2004 |
| Hawtrey Logistics Limited | Transport & logistics | 2000 |
| Haycock Holdings Limited | Professional & scientific | 1988 |
| Haycock Investments Limited | Professional & scientific | 2005 |
| Hayden Blest Limited | Wholesale & retail | 2022 |
| Hayes Homes South Limited | Construction | 2025 |
| Hayes Lane Limited | Construction | 2020 |
| Haylett Lodge Management Limited | Households | 1997 |
| Haylock Furnishing (South) Limited | Wholesale & retail | 1982 |
| Haylock Holdings Limited | Financial services | 2021 |
| Haylock Property Company Limited | Real estate | 2021 |
| Haymaj Store Limited | Wholesale & retail | 2025 |
| Haynes Electrical & Networking Ltd | Manufacturing | 2013 |
| Haywards Heath Spinal Health Limited | Health & social care | 2021 |
| Haywood Wines Limited | Wholesale & retail | 2014 |
| Hayworths ( Group ) Ltd | Wholesale & retail | 2025 |
| Hayworths Ltd | Hospitality | 2024 |
| Hazel Consulting Limited | Professional & scientific | 2015 |
| Hazel Court Management (Bournemouth) Limited | Real estate | 1998 |
| Hazel PR Limited | Administrative & support | 2006 |
| Hazelmere Property Holdings Limited | Real estate | 1998 |
| Hazelwood Therapies Ltd | Health & social care | 2021 |
| HB Properties & Letting Ltd. | Construction | 2014 |
| HBB Movie Ltd | Information & communication | 2024 |
| HBS Developments Ltd | Construction | 2014 |
| HCC Property Ltd | Real estate | 2024 |
| HCP Packaging UK Limited | Other services | 2005 |
| HD Comps Ltd | Other services | 2023 |
| HD Horsemanship Ltd | Education | 2025 |
| Hdrsoft Ltd | Information & communication | 2011 |
| Hdsg Engineering Limited | Professional & scientific | 2018 |
| HE and SHE Salon Limited | Other services | 2020 |
| Head & Wheble Funeral Directors Ltd | Extraterritorial | 2016 |
| Head & Wheble Monumental Masons Limited | Other services | 2001 |
| Head 2 TOE Security Ltd | Wholesale & retail | 2010 |
| Head of Hair Limited | Other services | 2012 |
| Head Over Heels Gymnastics Limited | Arts & recreation | 2016 |
| Headinglea Management Company Limited | Households | 2000 |
| Headstart Mortgage Solutions Ltd | Financial services | 2022 |
| Headtech Air Solutions Limited | Manufacturing | 2025 |
| Healing Design Co Ltd | Professional & scientific | 2025 |
| Health & Beauty by Francesca Sacco Ltd | Education | 2019 |
| Health Protect Plus Ltd | Health & social care | 2022 |
| Health Sciences University | Education | 1960 |
| Healthbus Hub CIC | Health & social care | 2023 |
| Healthily Ltd | Information & communication | 2013 |
| Healthy Choice Publishing Ltd | Information & communication | 2022 |
| Healthy Family Limited | Other services | 2018 |
| Healthy Jelly Care Ltd | Health & social care | 2018 |
| Healthy Living Healthy Life Ltd | Wholesale & retail | 2023 |
| Heart and Anchor Ltd | Professional & scientific | 2024 |
| Heart of Maldives Limited | Wholesale & retail | 2019 |
| Heart to Heart Private Care Ltd | Health & social care | 2024 |
| Hearth.Now Ltd | Manufacturing | 2025 |
| Heat Pumps Pro Ltd | Construction | 2015 |
| Heat-Tech Systems Limited | Construction | 2003 |