| GLG Transport Ltd | Transport & logistics | 2024 |
| Glint Construction Ltd | Construction | 2021 |
| Global Bloodstock Business Limited | Arts & recreation | 2021 |
| Global Financial Experts Limited | Administrative & support | 2017 |
| Global Spice Ltd | Wholesale & retail | 2026 |
| Glow Technologies Limited | Information & communication | 2024 |
| Go Simple Accounting Ltd | Professional & scientific | 2025 |
| Go Simple Accounts Limited | Professional & scientific | 2017 |
| Go Simple Recruitment Limited | Administrative & support | 2017 |
| GOD of Reformation Evangelical Ministry (Gorem) | Other services | 2020 |
| Godolphin Management Co. Limited | Agriculture & fishing | 1993 |
| Golden Ball Pinkneys Green Limited | Hospitality | 2022 |
| Golden Gunner Limited | Professional & scientific | 2000 |
| Golden One Limited | Wholesale & retail | 2020 |
| Google Cars UK Limited | Wholesale & retail | 2025 |
| Gould Construction Limited | Construction | 1997 |
| Grace Wells Development Ltd | Administrative & support | 2017 |
| Gracie Embroideries Limited | Manufacturing | 2003 |
| Grain Storage (Engineering) Limited | Extraterritorial | 1956 |
| Grant Consulting Structural Engineers Limited | Construction | 2015 |
| Grant House Limited | Real estate | 2020 |
| Granta Contracts Limited | Construction | 2018 |
| Great Bradley Estates Limited | Real estate | 1987 |
| Great Eastern Holdings Limited | Professional & scientific | 1977 |
| Great Eastern Investments Limited | Real estate | 1999 |
| Great Eastern Properties Limited | Real estate | 1977 |
| Great Eastern Securities Limited | Real estate | 1947 |
| Green Court (Bury ST Edmunds) Residents Association Ltd | Households | 2012 |
| Green Index Ltd | Information & communication | 2020 |
| Green Solar World Limited | Construction | 2011 |
| Green Step Electrical Ltd | Construction | 2014 |
| Greenacres Racing Limited | Agriculture & fishing | 2018 |
| Greenfield Harvest Limited | Agriculture & fishing | 2025 |
| Greening East Ltd | Real estate | 2026 |
| Greenleaf Kitchens Bedrooms & Bathrooms Ltd | Extraterritorial | 2016 |
| Greenregis Limited | Manufacturing | 1978 |
| Greyfriar Defence Limited | Information & communication | 2025 |
| Grill Point Ltd | Hospitality | 2025 |
| Grimthorpe Farms Limited | Administrative & support | 2013 |
| GRO Careers Limited | Administrative & support | 2023 |
| Gro-Nwg Limited | Professional & scientific | 2025 |
| Grove Park Farm Ltd. | Administrative & support | 2018 |
| GSI Engines Beta Limited Partnership | | 2007 |
| GT Hospitality Group Limited | Hospitality | 2024 |
| Gusto Market Ltd | Wholesale & retail | 2021 |
| GVO Site Services Limited | Construction | 2014 |
| GW Ltd | Extraterritorial | 2008 |
| H C Food Technology Consultants Ltd | Administrative & support | 2017 |
| H R Storage Limited | Transport & logistics | 2019 |
| H W Design Limited | Construction | 2002 |
| H.E.And B.S.Benson Limited, | Manufacturing | 1962 |
| H2O Scientific Limited | Professional & scientific | 2017 |
| Hadley PS Limited | Real estate | 2022 |
| Haigh Property Management Ltd | Real estate | 2026 |
| Hair Artistry (Newmarket) Limited | Administrative & support | 2020 |
| Hale Accountancy & Bookkeeping Limited | Professional & scientific | 2017 |
| Hall & Glory Limited | Wholesale & retail | 2003 |
| Hall & SON Building Services Ltd | Construction | 2018 |
| Hall & Sons Property Maintenance Ltd | Construction | 2023 |
| Hall of Fame Stud Limited | Professional & scientific | 2012 |
| Hallmark Property Consultants Limited | Professional & scientific | 2015 |
| Hannah’S Medical Aesthetics Ltd | Health & social care | 2023 |
| Happy BOW Limited | Real estate | 2026 |
| Happydayschildcare(Suffolk) Ltd | Health & social care | 2016 |
| Harbour Books (East) Ltd | Information & communication | 2009 |
| Harbour Holidays (Rock) Limited | Extraterritorial | 2018 |
| Harbour Outdoor Living Limited | Wholesale & retail | 2020 |
| Hardcastle Burton (Newmarket) Limited | Professional & scientific | 2010 |
| Hardiman-Mccartney Consultants Ltd | Professional & scientific | 2020 |
| Harding Garage Services Limited | Wholesale & retail | 2015 |
| Hare Park Stud LLP | | 2003 |
| Harold Associates Limited | Financial services | 2024 |
| Harold Boot Company UK Limited | Wholesale & retail | 2017 |
| Harpcombe Limited | Extraterritorial | 1975 |
| Harris Family Finance Company Limited | Financial services | 2015 |
| Harris Family Investments Limited | Financial services | 2018 |
| Harris Rossdale Holdings Ltd | Financial services | 2024 |
| Harvest Heat Ltd | Construction | 2012 |
| Hascombe & Valiant Stud Limited | Agriculture & fishing | 2015 |
| Hasse Estate Farming Company Limited | Agriculture & fishing | 1997 |
| Hassen Plastering Limited | Construction | 2023 |
| Haverhill Paint Supplies Limited | Wholesale & retail | 2023 |
| Havlin Bloodstock Limited | Agriculture & fishing | 2019 |
| Hawknote Limited | Real estate | 1986 |
| Hawkwell Business Consultants Limited | Professional & scientific | 1994 |
| Hawthorns Equine Ltd | Professional & scientific | 2022 |
| HAY Engineering Services Limited | Professional & scientific | 2023 |
| Hayley Burton Racing Ltd | Agriculture & fishing | 2026 |
| Hayselden Potatoes Ltd | Wholesale & retail | 2002 |
| Hazelwood Bloodstock Limited | Professional & scientific | 2015 |
| HB Ltd | Extraterritorial | 2021 |
| HCR Portfolio Limited | Real estate | 2025 |
| HDC Cleaning Limited | Administrative & support | 2022 |
| HE Limited | Extraterritorial | 2005 |
| Hearnsdale Ltd | Real estate | 2023 |
| Heart Aesthetics Ltd | Other services | 2019 |
| Hearthstone Property Management Ltd | Real estate | 2014 |
| Heating Company (Cambridge) Ltd | Construction | 2002 |
| Heaven Sent Healthcare Ltd | Health & social care | 2014 |
| Help the Homeless East Anglia CIC | Health & social care | 2026 |