| G & S Scaffolding Services Limited | Construction | 2006 |
| G & T Housing Ltd | Real estate | 2022 |
| G & T Property Holdings Ltd | Real estate | 2022 |
| G & Tea Cafe Ltd | Hospitality | 2016 |
| G & W Developments Investment Co Limited | Real estate | 2004 |
| G & W Developments Limited | Construction | 2000 |
| G a Construction Matters Limited | Professional & scientific | 2018 |
| G a Engineering (Halifax) Ltd | Manufacturing | 2016 |
| G B a Care Limited | Health & social care | 2011 |
| G Bateman Fabrications Engineering Solutions Limited | Manufacturing | 2006 |
| G Bateman Fabrications Ltd | Manufacturing | 2005 |
| G Beverley & SON Limited | Construction | 1999 |
| G Beverley Holdings Ltd | Financial services | 2025 |
| G Clayton Property Strategies Ltd | Real estate | 2025 |
| G Dickinson Properties Limited | Real estate | 2020 |
| G H Electrical Services Limited | Construction | 2019 |
| G J a Accountancy Limited | Professional & scientific | 2023 |
| G Keaskin Ltd | Health & social care | 2022 |
| G Murphy Construction Limited | Construction | 2022 |
| G S Joinery (Yorkshire) Limited | Construction | 2015 |
| G Smiles Ltd | Health & social care | 2021 |
| G Tully Training Academy Ltd | Education | 2026 |
| G&F Formwork Limited | Construction | 2017 |
| G&J Global Properties Ltd | Real estate | 2023 |
| G-Opub LLP | | 2004 |
| G. Alexander & Mhar Properties Limited | Professional & scientific | 2024 |
| G. H. E. Stansfeld (UK) Limited | Wholesale & retail | 1989 |
| G. Robinson & Co. Limited | | 1984 |
| G.A. O'Dowd Ltd. | Construction | 2003 |
| G.C. Textiles Limited | Wholesale & retail | 2003 |
| G.J. Sladdin & Company Limited | Financial services | 1976 |
| G.M.J. Driver Hire Limited | Transport & logistics | 2016 |
| G.S.G. Pianos Limited | Wholesale & retail | 2002 |
| G.S.S. Marketing Services Limited | Professional & scientific | 2003 |
| G.W. Car Sales (Halifax) Ltd | Wholesale & retail | 2003 |
| G.W.Estates Limited | Real estate | 1969 |
| G2MPC Homes Limited | Hospitality | 2006 |
| G4 Graphics Limited | Arts & recreation | 2006 |
| Gabriel HGV Trans Ltd. | Transport & logistics | 2018 |
| Gadget and Gift Company Ltd | Wholesale & retail | 2018 |
| Gagamel Ltd | Extraterritorial | 2024 |
| Gagarin Studio Limited | Professional & scientific | 2013 |
| Gago Style Ltd | Professional & scientific | 2025 |
| Gail Khan Associates Limited | Professional & scientific | 2011 |
| Galactic Golf Ltd | Arts & recreation | 2020 |
| Galaxy Rooms Ltd | Arts & recreation | 2024 |
| Gamerigz Ltd | Wholesale & retail | 2025 |
| Ganden Buddhist Centre | Education | 1996 |
| GAR Portfolio Ltd | Real estate | 2026 |
| Garden Gate Services Limited | Manufacturing | 2007 |
| Gardenius Nursery Ltd | Wholesale & retail | 2020 |
| Gardens Farm Ltd | Agriculture & fishing | 2017 |
| Garling Electrical Services Ltd | Manufacturing | 2019 |
| Garnett's Building Services Limited | Construction | 2022 |
| Garrards (Huddersfield) Limited | Manufacturing | 2000 |
| Garratt Properties Ltd | Real estate | 2024 |
| Garrimann Limited | Professional & scientific | 2025 |
| Garry Scott Groundworks, Landscaping and Maintenance Ltd | Administrative & support | 2019 |
| Garsides Limited | Professional & scientific | 1999 |
| Garston Jones Limited | Real estate | 2021 |
| Gartland Enterprises Ltd | Construction | 2022 |
| Gartland-Wood Investments Limited | Financial services | 2020 |
| Garvey Holdings Limited | Manufacturing | 2016 |
| Gary Binns Ltd | Financial services | 2023 |
| GAS & Heating Solution Ltd | Construction | 2022 |
| Gasworks Plumbing & Heating (Northern) Ltd | Construction | 2018 |
| GB Food Systems Limited | Professional & scientific | 2022 |
| GB Plumbing Limited | Construction | 2016 |
| GB Total Solutions Limited | Administrative & support | 2002 |
| GBA Properties Limited | Real estate | 2014 |
| GBL (Halifax) Ltd | Construction | 2024 |
| GDM South Limited | Health & social care | 2018 |
| GDO Entertainment Ltd | Arts & recreation | 2017 |
| Gear Spec Ltd | Manufacturing | 2016 |
| Gearbox Contracting Ltd | Information & communication | 2018 |
| Gekko Aggregates Ltd | Transport & logistics | 2025 |
| Gekko Civil Engineering Ltd | Construction | 2021 |
| Gekko Concrete Ltd | Manufacturing | 2023 |
| Gekko Waste Management Ltd | Water & waste | 2022 |
| GEM Deliverys Limited | Transport & logistics | 2018 |
| GEM Giftware Limited | Wholesale & retail | 2018 |
| Geministaffs Ltd | Agriculture & fishing | 2025 |
| Gemma Cliffe's Aesthetics Studio Ltd | Other services | 2018 |
| Gemma Dunne Ltd | Extraterritorial | 2022 |
| Gemma Jones Advanced Aesthetics Academy Ltd | Other services | 2018 |
| Gemma Montgomery Aesthetics Ltd | Other services | 2026 |
| Gemstone Collaboration Ltd | Professional & scientific | 2026 |
| Gender Diversity Understood Community Interest Company | Education | 2026 |
| General Mills Canada Corporation | | 2025 |
| General Mills Canada Holding Three Corporation | | 2023 |
| Generation 7 JAW Limited | Real estate | 2025 |
| Genesis IT Consulting & Healthcare Services Ltd | Information & communication | 2014 |
| Genius Hardware Ltd | Wholesale & retail | 2023 |
| Genlytiq Ltd | Extraterritorial | 2011 |
| Genprac Limited | Information & communication | 2023 |
| Gentlemen's Barber Club Limited | Other services | 2026 |
| Genuine Mobile Parts Ltd | Wholesale & retail | 2026 |
| Geoff's Consultancy Limited | Information & communication | 2021 |
| Geojen Installations Ltd | Construction | 2010 |
| Geoline Global Limited | Wholesale & retail | 2025 |