| Hasot Ltd | Education | 2021 |
| Hasran Limited | Hospitality | 2023 |
| Hassana Limited | Real estate | 2025 |
| Hassville Limited | Real estate | 1985 |
| Hastee Benefits Ltd. | Administrative & support | 2018 |
| Hastee HR Ltd | Financial services | 2022 |
| Hastee Technologies HR Ltd | Administrative & support | 2022 |
| HAT Bistro Ltd | Hospitality | 2018 |
| HAT Films Limited | Information & communication | 2013 |
| HAT Holidays Limited | Hospitality | 2019 |
| Hatch Brands Ltd | Wholesale & retail | 2022 |
| Hatcha Studios Ltd | Arts & recreation | 2024 |
| Hatched Talent Solutions Ltd | Administrative & support | 2023 |
| Hatchlings Games Ltd | Information & communication | 2020 |
| Hatherstone Ltd | Manufacturing | 2018 |
| Hatimi Properties Limited | Real estate | 2025 |
| Hatstand Management Limited | Real estate | 2016 |
| Hatters Close Management Company Limited | Households | 2008 |
| Hattie Wynter Ltd | Professional & scientific | 2024 |
| Hattson Holdings Ltd | Real estate | 2023 |
| Hattson Ltd | Construction | 2023 |
| Haus Investment & Property Services Limited | Construction | 2013 |
| Haus of Henry Ltd | Extraterritorial | 2019 |
| Haus of RHI Ltd | Wholesale & retail | 2026 |
| Haus of Vagabond Ltd | Arts & recreation | 2023 |
| Hausgemacht Studio LLP | | 2024 |
| Hausse Limited | Professional & scientific | 2019 |
| Hava Therapy Ltd | Other services | 2016 |
| Havana West Hotels (BC) Limited | Hospitality | 2005 |
| Havana West Limited | Hospitality | 2002 |
| Haven Community | Administrative & support | 2019 |
| Haven Court (Seaton) RTM Company Limited | Real estate | 2010 |
| Haven Green Clinic Limited | Health & social care | 2012 |
| Haven Maintenance Co. Limited | Households | 1975 |
| Haven Properties (Bristol) LLP | | 2014 |
| Haven Property Holdings Ltd | Real estate | 2020 |
| Haven Vets Limited | Professional & scientific | 2005 |
| Haverigg III Limited | Energy | 2003 |
| Haversham Health Limited | Administrative & support | 2021 |
| Haviland Logistics Ltd | Transport & logistics | 2022 |
| Havoyoco (UK) Limited | Education | 2008 |
| Havyat Business Park Management Company Limited | Real estate | 2006 |
| Havyatt Realty Ltd | Real estate | 2018 |
| Hawa Barber Bristol Ltd | Other services | 2021 |
| Hawari Medical Group Limited | Health & social care | 2022 |
| Hawberry Ltd | Professional & scientific | 2023 |
| Hawes & Paws Limited | Extraterritorial | 2019 |
| Hawk & Devon Ltd | Real estate | 2016 |
| Hawk Electrical Ltd | Construction | 2020 |
| Hawk EYE Investment Limited | Real estate | 2022 |
| Hawk Facilities Ltd | Administrative & support | 2024 |
| Hawk Financials Limited | Professional & scientific | 2021 |
| Hawk HOW Enterprises Limited | Manufacturing | 2025 |
| Hawk Security & Fire Limited | Administrative & support | 2025 |
| Hawker & Palmer Wealth Management Ltd | Financial services | 2011 |
| Hawkes Bay Meat Company (UK) Limited | Wholesale & retail | 2007 |
| Hawkesbury Mortgage Services Limited | Professional & scientific | 2010 |
| Hawkesford's Building and Restoration Limited | Construction | 2023 |
| Hawkeswell Consulting Ltd | Professional & scientific | 2018 |
| Hawkeswood Investments Limited | Professional & scientific | 2022 |
| HAWKEYE22 Fishponds Road SPV Ltd | Real estate | 2026 |
| HAWKEYE22 Ltd | Real estate | 2022 |
| Hawkhurst Limited | Real estate | 2015 |
| Hawkimage Limited | Transport & logistics | 2000 |
| Hawkins (Berkeley Vale Motors) Limited | Wholesale & retail | 1973 |
| Hawkins Climate Solutions Limited | Construction | 2025 |
| Hawkins Development & Maintenance Limited | Real estate | 2018 |
| Hawkins Groundcare Limited | Administrative & support | 2026 |
| Hawkins Group Services Ltd | Construction | 2019 |
| Hawkins Haulage Bristol Ltd | Transport & logistics | 2022 |
| Hawkins Plant Services Limited | Wholesale & retail | 1992 |
| Hawkins Roofing (Bristol) Ltd | Construction | 2004 |
| Hawkins Transport Ltd. | Transport & logistics | 2008 |
| Hawkins Watton Limited | Real estate | 2018 |
| Hawkland Architects Ltd | Extraterritorial | 2025 |
| Hawkland Construction Ltd | Extraterritorial | 2025 |
| Hawkland Group Ltd | Construction | 2016 |
| Hawkmoth Garden Design Limited | Professional & scientific | 2016 |
| Hawkmoth Productions Ltd | Information & communication | 2022 |
| Hawknest Limited | Health & social care | 2025 |
| Hawkridge Construction Ltd | Construction | 2018 |
| Hawks Ridge Investments Limited | Real estate | 1999 |
| Hawksbrook Ltd | Real estate | 2020 |
| Hawksdon Limited | Transport & logistics | 1990 |
| Hawksdown Limited | Arts & recreation | 1986 |
| Hawkspring | Health & social care | 2004 |
| Hawksworth Limited | Real estate | 2018 |
| Hawksworth Securities PLC | Construction | 1988 |
| Hawthorn Landscaping and Groundwork Ltd | Agriculture & fishing | 2013 |
| Hawthorn Property Management Ltd | Real estate | 2022 |
| Hawthorn Wedmore Management Company Limited | Households | 2025 |
| Hawthorne JAY Properties Limited | Real estate | 2020 |
| Haxted Mead Solar Farm Limited | Energy | 2023 |
| Hayaat Boutique Ltd | Wholesale & retail | 2019 |
| Hayan Miso Limited | Health & social care | 2014 |
| Hayatt Contractors Ltd | Construction | 2021 |
| Haydan Transport Ltd | Professional & scientific | 2023 |
| Haydon Associates Limited | Information & communication | 2000 |
| Hayes Chiropractic Ltd | Health & social care | 2009 |
| Hayes Court Management Company Limited | Households | 2006 |