| Grqh Limited | Hospitality | 2021 |
| Grrh Limited | Hospitality | 2026 |
| Grro Limited | Hospitality | 2025 |
| GRS Delivery Ltd | Transport & logistics | 2025 |
| GRS Financial Services Ltd | Financial services | 2018 |
| GRT (EN) Services Ltd | Construction | 2015 |
| GRT Capital Ltd | Administrative & support | 2021 |
| Grtg Limited | Hospitality | 2025 |
| Grundisburgh Vale (Grundisburgh) Management Company Limited | Households | 2022 |
| GS Flooring & Interiors Limited | Construction | 2023 |
| GS Infosolution Ltd | Information & communication | 2022 |
| GS Renewables East Anglia Ltd | Construction | 2021 |
| GS Safety Training Limited | Professional & scientific | 2019 |
| GSE Group Limited | Financial services | 2022 |
| GSL Trading Ltd | Transport & logistics | 2026 |
| GT Quality Consulting Ltd | Professional & scientific | 2026 |
| Gtjd Limited | Other services | 2018 |
| GTP Technologies Limited | Administrative & support | 2016 |
| GTS & Sons Limited | Construction | 2013 |
| Guardian Energy Holdings Limited | Energy | 2003 |
| Guardian Fire Safety Management Ltd | Public administration | 2014 |
| Guardian Office Angels Ltd | Professional & scientific | 2004 |
| Guardian Products Limited | Wholesale & retail | 1992 |
| Guarnest Limited | Administrative & support | 2024 |
| Guerin Investments Limited | Professional & scientific | 2023 |
| Gufi RST Ltd | Transport & logistics | 2025 |
| Guild Hall Complex Hadleigh Limited | Hospitality | 2014 |
| Guildhall Events Limited | Administrative & support | 2017 |
| Guiler Creative Limited | Wholesale & retail | 2025 |
| Guler Childcare Services Ltd | Health & social care | 2021 |
| Gunfleet Marine LLP | | 2011 |
| Guri Holdings Limited | Real estate | 2023 |
| Gurps Singh Ltd | Health & social care | 2011 |
| Gurugeeks Limited | Information & communication | 2024 |
| Gutfix Ltd | Health & social care | 2026 |
| Guthrum House Limited | Extraterritorial | 1998 |
| Gutter Guardians - East Anglia Ltd | Administrative & support | 2019 |
| Gutuk Ltd | Health & social care | 2025 |
| Guymark Interiors Limited | Construction | 2011 |
| GV London Ltd | Hospitality | 2026 |
| GVK Chimney Sweeps Ltd | Other services | 2021 |
| Gvolvo Ltd | Administrative & support | 2025 |
| GVS Estates Ltd | Real estate | 2021 |
| GVS Travels Limited | Other services | 2023 |
| GW Plumbing & Heating Limited | Construction | 2003 |
| GW Power Supplies Limited | Wholesale & retail | 2020 |
| GW Rentals Limited | Real estate | 2010 |
| GWT Farms Limited | Agriculture & fishing | 1985 |
| GY Care Services Limited | Administrative & support | 2026 |
| Gym in Motion Ltd | Health & social care | 2018 |
| Gymax Limited | Wholesale & retail | 2017 |
| Gymeve Limited | Construction | 1978 |
| Gymu Mentoring Ltd | Administrative & support | 2025 |
| GYN Trans Ltd | Transport & logistics | 2020 |
| H & E Properties (Southern) Limited | Administrative & support | 2013 |
| H & M Interiors Ltd | Manufacturing | 2025 |
| H & R Sports Performance Ltd | Health & social care | 2024 |
| H & S Heating Group Ltd | Construction | 2023 |
| H CUT Barber Ltd | Other services | 2026 |
| H D Sourcing Limited | Wholesale & retail | 2009 |
| H J H Homes Limited | Construction | 2012 |
| H J Saxon Ltd | Water & waste | 2024 |
| H Jones Properties Limited | Real estate | 2026 |
| H L Donohoe Ltd | Hospitality | 2020 |
| H M Barber Ltd | Other services | 2022 |
| H R Knights & Sons Limited | Construction | 2009 |
| H Refurbishments Ltd | Manufacturing | 2025 |
| H T Property Ipswich Ltd | Real estate | 2023 |
| H&A Fundamental Ltd | Transport & logistics | 2023 |
| H&B Accountancy Services Limited | Extraterritorial | 2004 |
| H&E Health and Safety Consultants Limited | Administrative & support | 2008 |
| H&I Online Ltd | Wholesale & retail | 2021 |
| H.B. Commercial (Property) Limited | Real estate | 1985 |
| H.B. Commercial Limited | Wholesale & retail | 1985 |
| H.C. & H.T.Cook Limited | Real estate | 1945 |
| H.C.C.C. Bar Limited | Hospitality | 2013 |
| H.G. Gladwell & Sons Limited | Manufacturing | 1960 |
| H.J. Green & Sons (Chelmsford) Limited | Construction | 1960 |
| H.J. Hedges-Quinn & Co Limited | Professional & scientific | 2002 |
| H.L.Perfitt Limited | Manufacturing | 1971 |
| H.M Gibbons Properties Ltd | Real estate | 2025 |
| H.M. Partridge & Co. Limited | Agriculture & fishing | 1997 |
| H2 Business Systems Limited | Information & communication | 2020 |
| H2CLEAN Ltd | Administrative & support | 2025 |
| Habit Sense Ltd | Other services | 2024 |
| Hacheston Properties Limited | Real estate | 1996 |
| Hacs Limited | Information & communication | 2002 |
| Haddow & Co Ltd | Manufacturing | 1985 |
| Haddow Property Ltd | Real estate | 2019 |
| Hadland Holdings Limited | Financial services | 2025 |
| Hadleigh Castings Limited | Manufacturing | 1969 |
| Hadleigh Catering Ltd | Hospitality | 2025 |
| Hadleigh Classic & Sports Car Limited | Wholesale & retail | 2002 |
| Hadleigh Consulting Limited | Administrative & support | 2001 |
| Hadleigh Environmental Action Team (Heat) CIC | Professional & scientific | 2024 |
| Hadleigh Executive Travel Limited | Transport & logistics | 2012 |
| Hadleigh Farmers' Agricultural Association | Other services | 1985 |
| Hadleigh Heatpumps Ltd | Construction | 2025 |
| Hadleigh Mental Health and Wellbeing Hub C.I.C. | Health & social care | 2026 |
| Hadleigh Mobility Centre Limited | Other services | 2010 |