| Harvest Estates Limited | Construction | 1994 |
| Harvest Express Ltd | Wholesale & retail | 2026 |
| Harvest Mead Management Company Limited | Households | 2006 |
| Harvest Productions Ltd | Extraterritorial | 2023 |
| Harvey & Co. (Surveyors) Limited | Administrative & support | 2002 |
| Harvey Aesthetics & Wellbeing Ltd | Other services | 2026 |
| Harvey Charles Carpets and Flooring Limited | Wholesale & retail | 2020 |
| Harvey Clinics Ltd | Health & social care | 2016 |
| Harvey Coach Builders Limited | Manufacturing | 2002 |
| Harvey Norwich Holdings Limited | Real estate | 2018 |
| Harveys Removals Norfolk Ltd | Transport & logistics | 2025 |
| Harveys Specialist DRY Cleaners Ltd | Other services | 2012 |
| Harveyson Consult Ltd | Administrative & support | 2019 |
| Harvi Malhi Ltd | Information & communication | 2019 |
| Harwood Asset Management Limited | Real estate | 2018 |
| Hascs Limited | Administrative & support | 2013 |
| Hasel Multi Services Ltd | Health & social care | 2016 |
| Hash Papa Ltd | Hospitality | 2024 |
| Hashim Coffee House Ltd | Hospitality | 2021 |
| Hashtagtrading Ltd | Wholesale & retail | 2023 |
| Hasler-White Limited | Professional & scientific | 2025 |
| Hassan Ridwan Ltd | Health & social care | 2024 |
| Haste Magazine Ltd | Professional & scientific | 2022 |
| Hastec Limited | Professional & scientific | 2015 |
| Hastes Kitchen Limited | Hospitality | 2016 |
| Haswell Training Ltd | Administrative & support | 2023 |
| Hataholics Ltd | Wholesale & retail | 2024 |
| Hatch Brenner LLP | | 2009 |
| Hatch Property Ltd | Construction | 2026 |
| Hatchet Harry's (Liverpool) Ltd | Arts & recreation | 2019 |
| Hatchet Harrys Property NWR Limited | Financial services | 2025 |
| Hatchet Harrys South Limited | Financial services | 2025 |
| Hatfield and Mccoys Ltd | Construction | 2018 |
| Hathor Consulting Ltd | Professional & scientific | 2018 |
| Hatts Property Limited | Real estate | 2016 |
| Haughton Warburton Estates LLP | | 2005 |
| Haulage 4 U Ltd | Transport & logistics | 2025 |
| Haus of Alexandra Ltd | Other services | 2025 |
| Haus of Fifty Two Ltd | Hospitality | 2026 |
| HAV Transportation Ltd | Transport & logistics | 2021 |
| Havenford UK Limited | Real estate | 2000 |
| Havenwood Homes Limited | Construction | 2025 |
| Havers Gardens Management Company Limited | Households | 2004 |
| Havnesk Ltd. | Wholesale & retail | 2018 |
| Hawa Restaurant Limited | Hospitality | 2020 |
| Hawam Ltd | Hospitality | 2020 |
| Hawam Tawa & Grill Ltd | Hospitality | 2023 |
| Hawes Family Trading Ltd | Financial services | 2024 |
| Hawes Music Ltd | Arts & recreation | 2008 |
| Hawk Carpentry Limited | Extraterritorial | 2025 |
| Hawk Infotech Limited | Information & communication | 2006 |
| Hawk Merchandise Limited | Wholesale & retail | 2016 |
| Hawk Power Engineering Ltd | Professional & scientific | 2016 |
| Hawkins Builders Ltd | Construction | 2018 |
| Hawler Mobile Ltd | Wholesale & retail | 2024 |
| Hawm Consultants Ltd | Information & communication | 2013 |
| Haworth & Co Probate Services Limited | Extraterritorial | 2019 |
| Hawthorn Homes Ltd | Construction | 2020 |
| Hawthorn Kitchens Ltd | Wholesale & retail | 2021 |
| Hawthorn Research Limited | Financial services | 2020 |
| Hawthorndon Developments Limited | Construction | 2015 |
| Hawthorne Property Holdings (East Anglia) Ltd | Financial services | 2025 |
| Hawthorns DEV SPV Ltd | Construction | 2024 |
| HAY Safari Tents Limited | Hospitality | 2012 |
| Haybloom Pro Ltd | Information & communication | 2026 |
| Hayden Asset Management (Holdings) Ltd | Financial services | 2017 |
| Hayden Education Consult Limited | Education | 2020 |
| Haydn Woodrow Ltd | Other services | 2015 |
| Haydn Woodrow Norwich Ltd | Other services | 2019 |
| Haydon Mechanical & Electrical Limited | Construction | 1970 |
| Haydon’S Ltd | Real estate | 2026 |
| Hayes & Co Services Ltd | Health & social care | 2009 |
| Hayes Computing Solutions Limited | Information & communication | 2001 |
| Hayfield Hideaways Ltd | Hospitality | 2020 |
| Hayfield Holdings Limited | Construction | 2022 |
| Hayley Alexandra Francis Ltd | Health & social care | 2025 |
| Hayman Developments Ltd | Construction | 2015 |
| Haynes Builders Norfolk Ltd | Construction | 2024 |
| Haynes Physiotherapy Limited | Health & social care | 2003 |
| Hayplus Ltd | Transport & logistics | 2024 |
| Haysac Ltd | Financial services | 2015 |
| Haysto Ltd | Financial services | 2020 |
| Hazel's Butchers Ltd | Hospitality | 2015 |
| Hazelnut Imaging Limited | Health & social care | 2021 |
| Hazelton Limited | Financial services | 2026 |
| Hazelwood and Pinmore Limited | Administrative & support | 1985 |
| HB Capital Group Ltd | Financial services | 2024 |
| HB Stoves Ltd | Construction | 2019 |
| Hbbrothers Ltd | Manufacturing | 2023 |
| HBM Macey Ltd | Professional & scientific | 2016 |
| HC Designs Limited | Professional & scientific | 2013 |
| HCH Enterprises Ltd | Wholesale & retail | 2021 |
| HCR Properties Limited | Real estate | 2024 |
| HD Home Improvements (Norfolk) Ltd | Construction | 2021 |
| HDB (Engineering) Ltd | Professional & scientific | 2014 |
| HDF Farming Limited | Agriculture & fishing | 2004 |
| HDL EOT (Norfolk) Ltd | Financial services | 2025 |
| HDL Holdings (Norfolk) Ltd | Financial services | 2024 |
| HDM (Anglia) Limited | Real estate | 2006 |
| HE Said, SHE Said, BAD Dates Limited | Information & communication | 2025 |