| Helix Aviation Limited | Transport & logistics | 2011 |
| Helix Engineering Services Limited | Manufacturing | 2005 |
| Heller Advisory Ltd | Professional & scientific | 2020 |
| Hellesdon Barns Ltd | Real estate | 2019 |
| Hellesdon Heating & Electrical Ltd | Construction | 2014 |
| Hellesdon Leather and Cloth Furniture Company Limited | Wholesale & retail | 1987 |
| Hellesdon Norwich Management Limited | Real estate | 2004 |
| Hellhouse Ltd | Other services | 2025 |
| Hellington Farm Limited | Agriculture & fishing | 1997 |
| Hello-Olive Ltd | Information & communication | 2013 |
| Hellohorizon Ltd | Professional & scientific | 2023 |
| Hellostake Limited | Financial services | 2018 |
| Helo Products Ltd | Financial services | 2020 |
| Help 4 Conveyancers Limited | Extraterritorial | 2001 |
| Help for Conveyancers Limited | Extraterritorial | 2001 |
| Help Unlimited LLP | | 2007 |
| HELP4ALL Limited | Information & communication | 2000 |
| Helpers Avenue Ltd | Health & social care | 2018 |
| Helping Hand Mortgages Limited | Financial services | 2022 |
| Helr Investment Company | Financial services | 2015 |
| Hemp Innovations Ltd | Professional & scientific | 2022 |
| Hempnall Development Land Limited | Administrative & support | 2019 |
| Hempnall Management Company Limited | Households | 2021 |
| Hemstock's Jewellers Limited | Wholesale & retail | 2002 |
| Hemstock’S Hair and Beauty Ltd | Other services | 2018 |
| Hemswell Coldstore Limited | Transport & logistics | 2011 |
| Hemtra Ltd | Professional & scientific | 2015 |
| Henacraft Limited | Hospitality | 2002 |
| Hence Consulting Limited | Professional & scientific | 2021 |
| Henden Group Ltd | Professional & scientific | 2024 |
| Henderson Labour Services Limited | Construction | 2013 |
| Henderson Trust | Real estate | 2000 |
| Hendrie Estates Limited | Real estate | 2010 |
| Henfield Click+Store Ltd | Real estate | 2018 |
| Henfield Hire Limited | Real estate | 2003 |
| Henfield Storage (Brighton) Ltd | Real estate | 2020 |
| Henfield Storage (Chiswick) Ltd | Real estate | 2018 |
| Henfield Storage (Southwark) Ltd | Real estate | 2018 |
| Henfield Storage (Staples Corner) Ltd | Real estate | 2018 |
| Henfil Holdings Limited | Financial services | 2019 |
| Henfil Limited | Financial services | 2011 |
| Henham Copywriting Ltd | Professional & scientific | 2022 |
| Henhouse Kids Ltd | Other services | 2022 |
| Henry Charles Developments Limited | Real estate | 2021 |
| Henry Ofoegbuliwe Ltd | Households | 2023 |
| Henry Properties Limited | Real estate | 2016 |
| Henry’S Helicopters Limited | Transport & logistics | 2024 |
| Henshaw Creative Limited | Professional & scientific | 2016 |
| Henstead Hall Estate Limited | Construction | 2003 |
| Hentrelix Capital Limited | Professional & scientific | 2022 |
| Heptonstall & Brown Limited | Construction | 2018 |
| Herbert & Albert Ltd | Financial services | 2022 |
| Herbert Family Enterprises Ltd | Financial services | 2024 |
| Herbert Freeston Limited | Real estate | 1922 |
| Herbert Parker Limited | Agriculture & fishing | 1919 |
| Hercules Management Services Limited | Hospitality | 2016 |
| Herd Vineyard Ltd | Agriculture & fishing | 2021 |
| Here and There Collective Ltd | Wholesale & retail | 2025 |
| Hereford Hub Retail Limited | Wholesale & retail | 2019 |
| Heritage Acre Hospitality and Holdings Limited | Financial services | 2026 |
| Heritage and Cultural Diversity C.I.C. | Education | 2024 |
| Heritage Builders & Home Maintenance Limited | Construction | 2024 |
| Heritage Building Supplies Ltd | Wholesale & retail | 2025 |
| Heritage Care at Home Ltd | Health & social care | 2010 |
| Heritage Construction (East Anglia) Limited | Construction | 2004 |
| Heritage Contract Services Limited | Administrative & support | 1989 |
| Heritage Developments Limited | Construction | 2003 |
| Heritage Garden Mews Management Company Limited | Households | 2007 |
| Heritage Homes Sales and Lettings Limited | Real estate | 2021 |
| Heritage Law (Norwich) Limited | Professional & scientific | 2016 |
| Heritage Law Holdings Limited | Professional & scientific | 2024 |
| Heritage Legal and Financial Limited | Other services | 2002 |
| Heritage Tax and Financial Consultancy Limited | Professional & scientific | 2001 |
| Herne Court Management Company Limited | Households | 1989 |
| Heroes Advertising & Public Relations Limited | Professional & scientific | 1986 |
| Heroes Muscle & Fitness Superstore Ltd. | Extraterritorial | 1997 |
| Heroes Wholesale Limited | Wholesale & retail | 2013 |
| Heron AI Ltd | Information & communication | 2016 |
| Heron Productions UK Limited | Information & communication | 2008 |
| Herring & Palmer Ltd | Manufacturing | 2009 |
| Herring NET Property Ltd | Real estate | 2018 |
| Herringbone Developments Ltd | Construction | 2024 |
| Herron Smith Building Services Limited | Construction | 2009 |
| Hertford Co Living Ltd | Households | 2018 |
| Hertford Signs Limited | Professional & scientific | 2025 |
| Hesta Blisht 72 Ltd | Administrative & support | 2009 |
| Hestia Cleaning Services Ltd | Administrative & support | 2022 |
| Hestia Home Heating Ltd | Construction | 2014 |
| Hestia Real Estate Ltd | Real estate | 2013 |
| Hethel Barn Limited | Hospitality | 2023 |
| Hethel Hens LLP | | 2005 |
| Hethel Innovation Ltd | Real estate | 2011 |
| Hethersett Butchers Ltd | Administrative & support | 2013 |
| Hethersett Dental Surgery Limited | Health & social care | 2012 |
| Hethersett Fish Bar Ltd | Hospitality | 2018 |
| Hethersett Fish Bites Limited | Hospitality | 2025 |
| Hethersett Hearts CIC | Transport & logistics | 2022 |
| Hethersett Limited | Wholesale & retail | 2004 |
| Hettysas Limited | Administrative & support | 2012 |
| Hevingham Development Company Limited | Construction | 1961 |