| Goodwin Commercial Carpentry Limited | Construction | 2018 |
| Goose & Didwell Limited | Agriculture & fishing | 1959 |
| Goose & Johns (Farms) Limited | Real estate | 1948 |
| Goosetree Consulting Limited | Professional & scientific | 2021 |
| Gordon Lovell Holdings Ltd | Financial services | 2025 |
| Gorilla Ground Screws Ltd | Construction | 2023 |
| Goshen Holdings Estate Ltd | Real estate | 2023 |
| Goude Building Services Limited | Construction | 2021 |
| Goya Tech Ltd | Financial services | 2023 |
| GPL Construction (UK) Limited | Construction | 2010 |
| Graceful Gaits Equestrian Limited | Arts & recreation | 2024 |
| Graf First Bridging UK Limited | Financial services | 2014 |
| Graham Fowler & Sons Limited | Agriculture & fishing | 2003 |
| Graham Longmate Property Rentals Ltd | Households | 2025 |
| Grand Gables Limited | Construction | 2015 |
| Grangebrook Foods Ltd | Wholesale & retail | 2017 |
| Granger Close (Wisbech) Management Company Limited | Households | 2011 |
| Granite Trading Limited | Administrative & support | 2007 |
| Gray Bell Ltd | Manufacturing | 2024 |
| Gray Developments (Wisbech) Limited | Construction | 2014 |
| Grayborne Estates Ltd | Real estate | 2023 |
| Grb-Uk Ltd | Extraterritorial | 2023 |
| Green & SON Roofing Limited | Construction | 2016 |
| Green FEN Renewables Ltd | Construction | 2025 |
| Green Light Produce Solutions Limited | Wholesale & retail | 2023 |
| Green Oval Framing Limited | Manufacturing | 2022 |
| Green Oval Lettings Ltd | Real estate | 2021 |
| Greens of Outwell Limited | Administrative & support | 2025 |
| Greenspace Property Solutions Ltd | Real estate | 2025 |
| Greentreatsuk Ltd | Wholesale & retail | 2021 |
| Greenveg Consultancy Limited | Professional & scientific | 2018 |
| Greenvoltz Ltd | Other services | 2020 |
| Greenwander Limited | Hospitality | 2025 |
| Greenzone (UK) Ltd | Manufacturing | 2011 |
| Grey Matter (Online Solutions) Limited | Information & communication | 2019 |
| Grikis Holdings Ltd | Real estate | 2023 |
| GRIZLIS2 Ltd | Transport & logistics | 2025 |
| Grooming Gorefield Limited | Other services | 2022 |
| Grouse Electrical Ltd | Construction | 2020 |
| GRT Driving School Ltd | Education | 2022 |
| GRT Landscaping Limited | Construction | 2024 |
| GRW Engineering UK Limited | Wholesale & retail | 2006 |
| GRW Homes Limited | Construction | 2026 |
| GSC Engineering (East Anglia) Limited | Professional & scientific | 2018 |
| Gsproductions Ltd | Information & communication | 2013 |
| GST Pharma Limited | Professional & scientific | 2014 |
| GT Engineering & Consultancy Ltd | Professional & scientific | 2021 |
| GTR Building Developers Ltd | Construction | 2024 |
| GTW Design Limited | Professional & scientific | 2025 |
| Gubbins Ltd | Information & communication | 2026 |
| Guide Engineering Services Ltd | Construction | 2024 |
| Gumis Rose Ltd | Agriculture & fishing | 2021 |
| Gummies Ltd. | Transport & logistics | 2011 |
| Gurney Environmental Limited | Administrative & support | 2006 |
| Gurney Projects Ltd | Professional & scientific | 2010 |
| Guyhirn Tyres Limited | Wholesale & retail | 2014 |
| Gyulseyagmur Ltd | Hospitality | 2026 |
| H & H Painters Limited | Construction | 2018 |
| H G Easey & Sons Limited | Transport & logistics | 2011 |
| H M Aldridge Limited | Information & communication | 2016 |
| H&D Security Limited | Administrative & support | 2021 |
| H&H Dwellings Limited | Real estate | 2025 |
| H&O Aggregates & Haulage Ltd | Transport & logistics | 2025 |
| H. Prins Limited | Agriculture & fishing | 1930 |
| H.L. Hutchinson Limited | Agriculture & fishing | 1947 |
| H.N.M Makkawi Limited | Transport & logistics | 2016 |
| Habitat Property Holdings Ltd | Real estate | 2026 |
| Hackbridge Limited | Manufacturing | 1998 |
| Haddon Renovations & Co Ltd | Construction | 2025 |
| Hagerty Properties Limited | Real estate | 2021 |
| Haimeco Holdings Ltd | Financial services | 2017 |
| Hair World UK Limited | Other services | 2002 |
| Hall Contracts (2006) Limited | Real estate | 2006 |
| Hall Contracts (Lakenheath) Limited | Real estate | 1998 |
| Hall Road (Outwell) Management Company Limited | Households | 2022 |
| Halle Clarke Design Ltd | Professional & scientific | 2024 |
| Hamac Enterprises Ltd | Construction | 2026 |
| Hamilton Estates Ltd | Real estate | 2022 |
| Hamilton Treeworks Ltd | Administrative & support | 2026 |
| Hamilton’S Hounds Ltd | Wholesale & retail | 2021 |
| Hamps Holdings Ltd | Financial services | 2026 |
| Hamston Group Ltd | Professional & scientific | 2025 |
| Hanet Ltd | Administrative & support | 2019 |
| Hanlon Corporate Finance Limited | Financial services | 2015 |
| Haon Healthcare Ltd | Health & social care | 2024 |
| Harding & Wagg Homes Ltd | Construction | 2023 |
| Harding & Wagg Limited | Construction | 2019 |
| Hardy Pacific Agencies Limited | Transport & logistics | 2004 |
| Harley Motors Ltd | Wholesale & retail | 2009 |
| Harmonic Wellness Ltd | Other services | 2022 |
| Harps Hall Holiday Letting Company Ltd | Real estate | 2021 |
| Harrington Batterbee Ltd | Professional & scientific | 2011 |
| Harrington Horticultural Holdings Ltd | Agriculture & fishing | 2025 |
| Hartley Farm Limited | Agriculture & fishing | 2023 |
| Harvester Parts Ltd | Wholesale & retail | 2023 |
| Harwoods's Smart Clean Solutions Ltd | Administrative & support | 2024 |
| Hasara Consulting Limited | Administrative & support | 2026 |
| Hasat Limited | Other services | 2021 |
| Hatching Time Ltd | Wholesale & retail | 2025 |
| Hatfield Cleaning Ltd | Administrative & support | 2026 |