| Hallowed BE THY Pint Ltd | Hospitality | 2018 |
| Halls Building Services Ltd | Construction | 2024 |
| Halls Close (Braughing) Management Company Limited | Households | 2025 |
| Halls Power Equipment Ltd | Manufacturing | 2014 |
| Halls Property Services Ltd | Construction | 2005 |
| Hallsprop Limited | Real estate | 2015 |
| Hallswood Animal Sanctuary Limited | Other services | 2012 |
| Hallsworth (South Norfolk) Limited | Agriculture & fishing | 1974 |
| Hallupa Ltd | Information & communication | 2009 |
| Hallupa Property Ltd | Real estate | 2017 |
| Halms Properties Ltd | Real estate | 2023 |
| Halo Taxis Limited | Transport & logistics | 2025 |
| Halsbury Homes (East Anglia) Limited | Construction | 2015 |
| Halsbury Homes (East Anglia) SGP Limited | Construction | 2015 |
| Halsbury Homes (Plumstead) Limited | Extraterritorial | 2021 |
| Halsbury Homes (Poringland) Limited | Construction | 2023 |
| Halsbury Homes (Salhouse) Limited | Construction | 2021 |
| Halsbury Homes (Silfield) Limited | Construction | 2021 |
| Halsbury Homes (South East) Limited | Construction | 2015 |
| Halsbury Homes (South West) Limited | Construction | 2023 |
| Halsbury Homes (Sprowston) Limited | Construction | 2018 |
| Halsbury Homes Limited | Construction | 2006 |
| Halsbury Strategic Limited | Construction | 2015 |
| Halton-Farrow Limited | Professional & scientific | 2016 |
| Halu Ltd | Energy | 2024 |
| Halvergate Barns Residents Association Limited | Households | 2002 |
| HAM & JAM Projects Limited | Information & communication | 2025 |
| Hamburger Heaven Limited | Hospitality | 2025 |
| Hamdam Limited | Hospitality | 2023 |
| Hament Holdings Limited | Financial services | 2015 |
| Hament Limited | Administrative & support | 2012 |
| Hamilton Close Management Company Limited | Households | 2019 |
| Hamilton Heights Ltd | Real estate | 2021 |
| Hamilton Inns Ltd | Hospitality | 2013 |
| Hamilton Riley Limited | Construction | 2018 |
| Hamilton White Ltd | Real estate | 2026 |
| Hamison Homes Ltd | Construction | 2020 |
| Hamlin Court Freehold Limited | Real estate | 2016 |
| Hamlin Court Residents Association Limited | Households | 1976 |
| Hamlin Electronics Europe Limited | Manufacturing | 1961 |
| Hammel Accountancy Services Ltd | Professional & scientific | 2005 |
| Hammond and Stratford Partners Limited | Real estate | 2024 |
| Hammond Cars Limited | Wholesale & retail | 2025 |
| Hammond Catering (Norwich) Ltd | Hospitality | 2024 |
| Hammond Electrical Contracting Limited | Construction | 2006 |
| Hammondlee Limited | Real estate | 2008 |
| Hampden Car Sales Ltd | Wholesale & retail | 2024 |
| Hamplin Homes Ltd | Real estate | 2024 |
| Hamplin Inns Limited | Hospitality | 2015 |
| Hamsi 1 Limited | Hospitality | 2019 |
| Hamson Barron Smith Limited | Professional & scientific | 1990 |
| Hamson Construction Limited | Construction | 1984 |
| Hancon Services Ltd | Financial services | 2011 |
| Hand Hygiene Solutions Limited | Administrative & support | 2017 |
| Handel Insights Ltd | Professional & scientific | 2023 |
| Handled With Care Ltd | Professional & scientific | 2014 |
| Handmade Furniture Ltd | Wholesale & retail | 2023 |
| Handover Cleaning Limited | Administrative & support | 2020 |
| Handover Holiday Lets Limited | Hospitality | 2025 |
| Handover Laundry Ltd | Administrative & support | 2025 |
| Handover Services Ltd | Real estate | 2020 |
| Hands of Care Ltd | Administrative & support | 2026 |
| Hands on Compliance Limited | Professional & scientific | 2016 |
| Hands Wealth Limited | Financial services | 2019 |
| Handsley Taylor Limited | Construction | 2010 |
| Hangman Curtain and Blinds Ltd | Wholesale & retail | 2007 |
| Hanks Virdee Limited | Wholesale & retail | 2022 |
| Hanmore&Co Ltd | Administrative & support | 2019 |
| Hannah and the Moon Ltd | Education | 2012 |
| Hannah Rose Benton Ltd | Health & social care | 2022 |
| Hannah Wallis Creative Limited | Professional & scientific | 2016 |
| HANNAH@SALON33 Ltd | Other services | 2024 |
| Hanover Red Group Ltd | Construction | 2018 |
| Hanrev Homes Ltd | Construction | 2014 |
| Hansell Properties Ltd | Real estate | 2024 |
| Hansells | Professional & scientific | 1992 |
| Hansells 2022 Limited | Professional & scientific | 2023 |
| Hanto Recruitment Ltd | Administrative & support | 2019 |
| Hapai Consulting Limited | Other services | 2024 |
| Hapi Place Property Management Ltd | Real estate | 2025 |
| Hapiflow Solutions Ltd | Professional & scientific | 2025 |
| Happies Books Ltd | Manufacturing | 2019 |
| Happisburgh Manor Limited | Hospitality | 2019 |
| Happy Days Leisure Ltd | Hospitality | 2021 |
| Happy Dog Transforms Limited | Other services | 2000 |
| Happy Feet (Norfolk) Limited | Health & social care | 2023 |
| Happy H KLE Ltd | Hospitality | 2024 |
| Happy Hideaways Ltd | Hospitality | 2021 |
| Happy Meadows Ltd | Agriculture & fishing | 2025 |
| Happy OUT Studios Ltd | Wholesale & retail | 2025 |
| Happy Rice Limited | Hospitality | 2022 |
| Happy Thoughts Consultancy Ltd | Professional & scientific | 2023 |
| Happy Tooth Limited | Health & social care | 2014 |
| Haps Oxford Prop Co Ltd | Real estate | 2025 |
| Haps Park Terrace Ltd | Construction | 2022 |
| Hapton Building Services Limited | Construction | 2024 |
| Hapton Homes (EA) Limited | Construction | 2026 |
| Hapton Services Ltd | Wholesale & retail | 2023 |
| Harber Holdings Ltd | Financial services | 2021 |
| Harber Properties Limited | Real estate | 1976 |