| Galley Beggar Press Limited | Information & communication | 2012 |
| GALLOP2WIN Ltd | Wholesale & retail | 2025 |
| Galloping Giveaways Ltd | Wholesale & retail | 2025 |
| Galvanica Limited | Manufacturing | 2016 |
| Galvin Designs Limited | Information & communication | 2008 |
| Gambit Acquisitions Limited | Real estate | 2016 |
| Gamble Property Group Ltd | Real estate | 2016 |
| Game Meadow Limited | Real estate | 2002 |
| Gamenation (UK) Limited | Information & communication | 2014 |
| Games Festival Ltd | Administrative & support | 2025 |
| Gamestar Leisure Ltd | Arts & recreation | 2017 |
| Gamevaultco Limited | Information & communication | 2021 |
| GAN Windows Ltd | Other services | 2018 |
| Gander Ltd | Professional & scientific | 2025 |
| Ganut Medcare Ltd | Health & social care | 2019 |
| GAP Chandler Compsites Ltd | Manufacturing | 2025 |
| GAP Logistical Solutions Limited | Transport & logistics | 2020 |
| Gaplan Limited | Other services | 2007 |
| GAR Builders Ltd | Construction | 2020 |
| Garage Doors Norfolk Ltd | Manufacturing | 2025 |
| Garama 3C Ltd | Professional & scientific | 2012 |
| Garbaciu Transport Service Ltd | Transport & logistics | 2016 |
| Garboldisham Resident Management Company Limited | Households | 2026 |
| Garden & Furniture ETC Limited | Manufacturing | 2020 |
| Garden Court (Hoveton) Limited | Households | 2014 |
| Garden Gates Norfolk Ltd | Construction | 2025 |
| Garden Guardian Limited | Agriculture & fishing | 2002 |
| Garden Improvements Group Ltd | Financial services | 2024 |
| Garden Kitchen Norfolk Ltd | Hospitality | 2015 |
| Garden Landscape Services Ltd | Construction | 2005 |
| Garden Link Homes Limited | Construction | 1962 |
| Garden Rooms and More Ltd | Construction | 2023 |
| Garden Upgrades Limited | Wholesale & retail | 2023 |
| Gardenatics Limited | Administrative & support | 2012 |
| Gardenia (Cambridge) Ltd | Hospitality | 2003 |
| Gardner & Daughters Limited | Wholesale & retail | 2016 |
| Gareth Alldridge Construction Limited | Construction | 2017 |
| Garhold Limited | Professional & scientific | 2013 |
| Garisco Limited | Education | 2026 |
| Garlogie Energy Centre Limited | Administrative & support | 2019 |
| Garlogie Solar Holdings Limited | Financial services | 2025 |
| Garmston Professional Ltd | Administrative & support | 2015 |
| Garnham Holdings Limited | Real estate | 2015 |
| Garnham Properties Limited | Real estate | 2014 |
| Garrett Commercial EST2025 Ltd | Real estate | 2025 |
| Garrett Court Residents Limited | Households | 1987 |
| Garrett Enterprises Ltd | Real estate | 2019 |
| Garrison Investments Limited | Real estate | 2025 |
| Garrould Limited | Information & communication | 2008 |
| Garuba Home Ltd | Real estate | 2018 |
| Garuba Limited | Health & social care | 2012 |
| Garvestone Village Hall (New Build) Ltd. | Education | 2009 |
| Garwood & Bond Limited | | 1991 |
| Gary B Builder Ltd | Construction | 2025 |
| Gary Chapman & SON Ltd | Transport & logistics | 2017 |
| Gary Frosdick Building Services Ltd | Construction | 2007 |
| Gary O'Rourke Ltd | Construction | 2017 |
| Garys Window Cleaning Ltd | Households | 2022 |
| GAS & Air Studios Limited | Manufacturing | 2016 |
| GAS & OIL TEC Ltd | Construction | 2025 |
| GAS Ancillary Services Ltd | Construction | 2004 |
| GAS and Air Renewables Ltd | Construction | 2023 |
| GAS and Air Tech Services Ltd | Construction | 2023 |
| GAS and Air Technology Ltd | Administrative & support | 2015 |
| GAS Fellas Ltd | Construction | 2017 |
| GAS Generation Coatbridge Limited | Energy | 2016 |
| GAS Generation Forfar Limited | Energy | 2017 |
| GAS Generation GAS Road Limited | Extraterritorial | 2017 |
| GAS Generation Helen Street Limited | Extraterritorial | 2017 |
| GAS Generation Oldham Limited | Energy | 2016 |
| GAS Generation Retford Road Limited | Extraterritorial | 2017 |
| GAS Generation Thurrock Limited | Energy | 2016 |
| GAS Secure and Safe Limited | Construction | 2020 |
| GAS Select Limited | Construction | 2014 |
| GAS, Plumbing & Electrical Engineering Limited | Construction | 2016 |
| Gascare East Anglia Ltd | Administrative & support | 2009 |
| Gascoyne Music Ltd | Arts & recreation | 2004 |
| Gaselectric Renewals Ltd | Professional & scientific | 2009 |
| Gashouse Hill Property Management Company Limited | Households | 2020 |
| Gastank Limited | Health & social care | 1974 |
| Gasway Services Limited | Construction | 2001 |
| Gasworks South East Limited | Construction | 2012 |
| Gate of India Ltd | Hospitality | 2024 |
| Gatehouse Heritage Consultancy Limited | Construction | 2022 |
| Gater Engineering Limited | Administrative & support | 2017 |
| Gateshed Limited | Real estate | 2013 |
| Gateway Logistics Group Ltd | Transport & logistics | 2024 |
| Gateway Vineyard Christian Fellowship Norwich | Other services | 2010 |
| Gatewell Limited | Real estate | 2013 |
| Gaurvi Properties Limited | Real estate | 2026 |
| Gautier Consulting Services Ltd | Professional & scientific | 2024 |
| Gavin Meredith Services Ltd | Transport & logistics | 2017 |
| Gaziano & Girling Limited | Manufacturing | 2006 |
| GB Engines Ltd | Wholesale & retail | 2019 |
| GB Events Management Ltd | Other services | 2015 |
| GB Gold Ltd | Wholesale & retail | 2025 |
| Gb&M Associates Ltd | Professional & scientific | 2013 |
| GB350 Investment Group Ltd | Professional & scientific | 2026 |
| Gbcm Limited | Administrative & support | 2018 |
| Gbhk Lighting Ltd | Wholesale & retail | 2019 |