| HEALTHNEST1 Ltd | Health & social care | 2023 |
| Healthy Talent Recruitment Limited | Administrative & support | 2017 |
| Hearease Ltd | Wholesale & retail | 2025 |
| Hearne Enterprises Ltd | Wholesale & retail | 2015 |
| Hearne Holdings Ltd | Real estate | 2017 |
| Hearne Homes Limited | Real estate | 2019 |
| Hearne Households Limited | Real estate | 2021 |
| Heart for Learning Limited | Education | 2019 |
| Heartfelt Companions Ltd | Administrative & support | 2025 |
| Hearthwell Management Ltd | Hospitality | 2026 |
| Hearts of Care Agency Limited | Health & social care | 2021 |
| Heath Landscapes & Building Services Ltd | Construction | 2026 |
| Heath Properties (Ipswich) Ltd | Real estate | 2018 |
| Heath Road Convenience Store Ltd | Wholesale & retail | 2023 |
| Heath Woodbury | Professional & scientific | 2025 |
| Heatherfields Limited | Construction | 1999 |
| Heathers Soft Furnishings Limited | Wholesale & retail | 1997 |
| Heathlands Park Limited | Real estate | 2002 |
| Heathpatch Limited | Agriculture & fishing | 1997 |
| Heating Bildeston CIC | Professional & scientific | 2022 |
| Heatpro Suffolk Ltd | Construction | 2020 |
| Heavenly Gardening Ltd | Hospitality | 2024 |
| Heavenly Maids Limited | Administrative & support | 2025 |
| Heavy Plant Services Europe Limited | Construction | 1998 |
| Heavyweight Freight Ltd | Administrative & support | 2019 |
| HEB Signalling & Testing Services Ltd | Manufacturing | 2013 |
| Hectagon (UK) Limited | Construction | 2009 |
| Hecticlook Limited | Real estate | 1987 |
| Hedge (East Anglia) Limited | Construction | 1974 |
| Hedgecog Systems LLP | | 2019 |
| Heels OR Toes Ltd. | Health & social care | 2017 |
| Heir Hunters Limited | Professional & scientific | 2008 |
| Heir Hunters Research Limited | Extraterritorial | 2014 |
| Helena Carlon Consulting Limited | Professional & scientific | 2022 |
| Helenka Ltd | Wholesale & retail | 2019 |
| Helga's Homes Limited | Real estate | 2019 |
| Helmingham Holdings Limited | Construction | 2020 |
| Helping Hands Healthcare Services Ltd | Health & social care | 2024 |
| Hembriar Limited | Construction | 1999 |
| Hemel Hempstead Business Improvement District Limited | Administrative & support | 2016 |
| Hemingstone Services Limited | Manufacturing | 2007 |
| Hemisphere Elite Travel Limited | Extraterritorial | 2020 |
| Hemisphere Freight Services Limited | Transport & logistics | 1989 |
| Hemisphere Global Logistics Limited | Extraterritorial | 2016 |
| Hemisphere Logistics Limited | Transport & logistics | 2025 |
| Hemley Holdings Ltd | Wholesale & retail | 2026 |
| Hemx Ltd | Wholesale & retail | 2019 |
| Henbrandt Limited | Administrative & support | 1971 |
| Hender TM Ltd | Construction | 2022 |
| Henderson Blinds Ltd | Wholesale & retail | 2017 |
| Hengyao Trade Ltd | Wholesale & retail | 2026 |
| Henley Building Services (EA) Ltd | Construction | 2016 |
| Henley Community Centre Charity | Arts & recreation | 2012 |
| Henley Court RTM Company Limited | Administrative & support | 2009 |
| Henley Properties (EA) Ltd | Real estate | 2020 |
| Henleys Fish Bar Ltd | Hospitality | 2018 |
| Hennell James Photography Limited | Professional & scientific | 2007 |
| Henryk Kolosa Ltd | Transport & logistics | 2024 |
| Henson & Black Limited | Construction | 2018 |
| Hephzibah Ventures CIC | Health & social care | 2015 |
| Herald Hotels Limited | Professional & scientific | 2013 |
| Herbcourt Ltd | Construction | 1971 |
| Herbs VT Ltd. | Information & communication | 2020 |
| Heritage Coast Asset Management Limited | Financial services | 2012 |
| Heritage Estate Partners Ltd | Administrative & support | 2020 |
| Heritagebuild Innovations Ltd | Extraterritorial | 2026 |
| Hermes Medical Solutions Limited | Wholesale & retail | 1986 |
| Hermina Bookkeeping & Accounting Ltd | Professional & scientific | 2024 |
| Heroig Ltd | Information & communication | 2020 |
| Heron IT Limited | Information & communication | 2009 |
| Heron Security Limited | Administrative & support | 2023 |
| Heronpoint Property Limited | Real estate | 2004 |
| Heronsgate (Blofield) Management Company Limited | Households | 2019 |
| Herpe Technology Ltd | Professional & scientific | 2026 |
| Heslin Consulting Limited | Professional & scientific | 2017 |
| Hestia International Limited | Administrative & support | 2024 |
| Hestia Property Holdings Limited | Real estate | 2023 |
| Heswall Properties Limited | Real estate | 2016 |
| Hevrac Ltd | Hospitality | 2016 |
| Hewitt Plumbing and Heating Services Ltd | Construction | 2024 |
| Hexaves Ltd | Manufacturing | 2023 |
| Heys UK Commercial Limited | Administrative & support | 2025 |
| HFE Consulting Limited | Professional & scientific | 2012 |
| HG Property Holdings Ltd | Real estate | 2026 |
| HGV Garage Ltd | Wholesale & retail | 2015 |
| HH Building Services Limited | Construction | 2022 |
| HH Mercantile Limited | Real estate | 2026 |
| Hh-Dd Ltd | Wholesale & retail | 2024 |
| HHF (EA) Management Company Ltd | Households | 2022 |
| HI Supply Communications Ltd | Professional & scientific | 2024 |
| Hi-Precision Engineering Limited | Professional & scientific | 2003 |
| Hibberd’S Limited | Manufacturing | 2020 |
| Hibees Financial Solutions Limited | Professional & scientific | 2007 |
| Hicks Farm House Management Company Limited | Households | 2018 |
| Hicks Park Wood Limited | Agriculture & fishing | 2024 |
| Hid'N Fashion Limited | Manufacturing | 2017 |
| Hidden Heroes Ltd | Wholesale & retail | 2025 |
| Hidden Youth Records Limited | Manufacturing | 2025 |
| Higgins SPV Ltd | Real estate | 2020 |
| Higgs Enterprises Ltd | Wholesale & retail | 2022 |