| Gssd Properties Limited | Real estate | 2025 |
| GT Yarmouth Hearing Care Ltd | Wholesale & retail | 2024 |
| GT. Yarmouth Heating (Holdings) Company Limited | Construction | 2007 |
| Gt.Yarmouth Heating Company Limited | Construction | 1971 |
| GTC Commercials Limited | Real estate | 2025 |
| GTS Rental Ltd | Real estate | 2018 |
| Guardian Wills & Estate Planning Ltd | Professional & scientific | 2017 |
| GWB Construction Limited | Construction | 2005 |
| GWL Security Limited | Wholesale & retail | 2004 |
| GY Britannia Fish and Chips Ltd | Hospitality | 2023 |
| GY Business Limited | Administrative & support | 2025 |
| GY Consultancy Ltd | Construction | 2010 |
| GY Fabrication Ltd | Manufacturing | 2021 |
| GY Property Group Ltd | Real estate | 2026 |
| GY Sporting Academy CIC | Arts & recreation | 2019 |
| GYC Interior Solutions Limited | Extraterritorial | 2024 |
| Gytyres Limited | Manufacturing | 2025 |
| H Esherwood Properties Ltd | Real estate | 2025 |
| H G Watson Builders Limited | Wholesale & retail | 2001 |
| H I S Investments Ltd | Real estate | 2016 |
| H J (Anglia) Ltd | Real estate | 2002 |
| H M Leisure Limited | Real estate | 2017 |
| H&H Hand Car Wash Ltd | Other services | 2026 |
| H&S Realty Ltd | Real estate | 2024 |
| H. S. Neave & SON Limited | Transport & logistics | 1984 |
| H2OIL Limited | Mining & quarrying | 2019 |
| Haddon Family Ltd | Wholesale & retail | 2026 |
| Hair-Um Limited | Other services | 2026 |
| Hairbase Academy Limited | Education | 2021 |
| Hairbase UK Limited | Other services | 2003 |
| Halcyon Skies Ltd | Construction | 2018 |
| Hall Farm Ltd | Real estate | 2012 |
| Hall Farm Rollesby Limited | Administrative & support | 2014 |
| Hall Farm Storage Ltd | Real estate | 2022 |
| Hall Quay Limited | Real estate | 2023 |
| Halls Quality Butchers Limited | Wholesale & retail | 2011 |
| Hamblyn Cars Ltd | Wholesale & retail | 2018 |
| Hammond Building Servicing Ltd | Real estate | 2026 |
| Hammond Property Development Holding Limited | Real estate | 2026 |
| Hammond Property Developments Limited | Construction | 2002 |
| Hammond Property Rentals Ltd | Real estate | 2025 |
| Hanley Housing Ltd | Real estate | 2019 |
| Hannon Designs Ltd | Professional & scientific | 2025 |
| Happy Homes GY Ltd | Real estate | 2025 |
| Happy Scoop Ltd | Hospitality | 2026 |
| Haque Trading (Norwich) Ltd | Hospitality | 2024 |
| Harbour Radio CIC | Information & communication | 2020 |
| Hardimans Limited | Real estate | 1994 |
| Hardings Smartdrive Limited | Education | 2026 |
| Harfield Homes Ltd | Construction | 2013 |
| Harlingwood Homes Limited | Construction | 2019 |
| Harris Sportsmail Ltd | Wholesale & retail | 2008 |
| Harrison Steel Properties Limited | Real estate | 2022 |
| Harrisons Schoolwear Limited | Wholesale & retail | 2018 |
| Harrod Outdoors Limited | Agriculture & fishing | 2020 |
| Harrod Properties Limited | Real estate | 2025 |
| Hart Fabrications Limited | Manufacturing | 2013 |
| Hartley Williamson Limited | Real estate | 2014 |
| Harvey & Louie Properties Ltd | Real estate | 2025 |
| Harwood Hvac Services Ltd | Manufacturing | 2020 |
| Hassan & Hussain Livings Limited | Real estate | 2022 |
| Hatch Construction (EA) Limited | Construction | 2021 |
| Hatch Electrical Services Limited | Manufacturing | 2020 |
| Hatch Homes (Blakeney) Limited | Construction | 2024 |
| Hatch Homes (Blofield) Limited | Construction | 2021 |
| Hatch Homes (BPH2) Limited | Construction | 2025 |
| Hatch Homes (EA) Limited | Construction | 2016 |
| Hatch Homes (NM) Limited | Construction | 2025 |
| Hatch Partners | Construction | 2021 |
| Hatona Ltd | Manufacturing | 2026 |
| Hatteress Hair Ltd | Other services | 2023 |
| Hattie Lloyd Limited | Wholesale & retail | 2013 |
| Hawthorn Research and Development Ltd | Professional & scientific | 2010 |
| Hawthorn Technical Services Limited | Water & waste | 2008 |
| Haydan Investments Limited | Households | 2016 |
| Haylett Homes Limited | Real estate | 2025 |
| Hayward Offshore Limited | Professional & scientific | 2009 |
| HB Strategy Ltd | Public administration | 2022 |
| HCW Orthodontics Limited | Health & social care | 2014 |
| HD Windows & Doors Limited | Construction | 2015 |
| Healing Hooves Community Interest Company | Other services | 2026 |
| Healthcare Insight Solutions Ltd | Information & communication | 2026 |
| Heart 2 Heart Norfolk | Health & social care | 2017 |
| Heartbeatsz Academy, UK Ltd | Education | 2024 |
| Heartless Trampers Ltd | Hospitality | 2019 |
| Heath Accountancy Services Ltd | Professional & scientific | 2007 |
| Heath Management Browston Ltd | Households | 2023 |
| Heathers Care Home Limited | Health & social care | 2015 |
| Heathland Fountains Limited | Agriculture & fishing | 2018 |
| Heathland Group Limited | Agriculture & fishing | 2018 |
| Heidi Louise Tattoo Ltd | Other services | 2025 |
| Heidrun Designs Ltd | Manufacturing | 2024 |
| Heller Enterprise Limited | Manufacturing | 2020 |
| Hemblington Hall Arts and Leisure Limited | Hospitality | 2021 |
| Hemsley Copywriting Ltd | Professional & scientific | 2017 |
| Herbert Woods Enterprises Limited | Other services | 2010 |
| Hero Parcel Logistics Limited | Transport & logistics | 2025 |
| Herring House Trust (Great Yarmouth) | Health & social care | 1996 |
| Hesperus Limited | Financial services | 2020 |
| Hewett Holdings Ltd | Households | 2025 |