| G&J Developments NW Ltd | Construction | 2026 |
| G&K Foods Limited | Hospitality | 2025 |
| G&S Builders Group Ltd | Construction | 2022 |
| G&Sb Ltd | Real estate | 2024 |
| G&T Catering Ltd | Hospitality | 2024 |
| G-Com Property Investments Ltd | Real estate | 2024 |
| G. Dalton Engineering Limited | Manufacturing | 1983 |
| G. L. T. Management Limited | Hospitality | 2003 |
| G. Mcgreavy Electrical & Security Limited | Construction | 2013 |
| G. Watts Construction Limited | Construction | 1967 |
| G. Zawadzki and Sons Ltd | Construction | 2019 |
| G.& J.Seddon Limited | Construction | 1920 |
| G.& P.Barker Limited | Manufacturing | 1948 |
| G.B Tows Ltd | Transport & logistics | 2025 |
| G.C.Supplies Limited | Extraterritorial | 1995 |
| G.C.Supplies UK Limited | Wholesale & retail | 1984 |
| G.E.P. Motor Engineers Limited | Wholesale & retail | 1983 |
| G.E.S (Garage Equipment Supplies) Ltd | Manufacturing | 2025 |
| G.F. Pennington & Sons Limited | Wholesale & retail | 1978 |
| G.H.M. (Group) Ltd | Manufacturing | 2006 |
| G.H.M. (U.K.) Limited | Wholesale & retail | 1982 |
| G.J.H. Thermal Solutions Limited | Construction | 2017 |
| G.K. Controls Limited | Wholesale & retail | 1977 |
| G.L.D. (Properties) Limited | Construction | 1980 |
| G.L.T. Management Holdings Limited | Financial services | 2022 |
| G.M.D. Catering Limited | Other services | 2004 |
| G1 Tyres Ltd | Wholesale & retail | 2025 |
| G2 Carwash Limited | Wholesale & retail | 2026 |
| G2 Garage Ltd | Wholesale & retail | 2015 |
| G2CONNECT Limited | Information & communication | 2012 |
| G5 Estates Limited | Real estate | 2013 |
| G6 Chauffeur Ltd | Administrative & support | 2024 |
| G7 Constructionltd Ltd | Construction | 2024 |
| GAB & SON Ltd | Construction | 2024 |
| GAB Electrical Ltd | Construction | 2014 |
| GABIELI8 Ltd | Transport & logistics | 2018 |
| Gabo Studio Limited | Professional & scientific | 2025 |
| Gabriel Rose Limited | Administrative & support | 2022 |
| Gabriela Transport Services Ltd | Transport & logistics | 2026 |
| Gabriellastraining Ltd | Education | 2022 |
| Gadget Groot Ltd | Wholesale & retail | 2025 |
| GADGETS2SEL Ltd | Wholesale & retail | 2023 |
| GADGETS2SELHAULAGE Ltd | Transport & logistics | 2020 |
| Gadimal Enterprise Ltd | Wholesale & retail | 2024 |
| Gadziby Logistics Limited | Transport & logistics | 2025 |
| Gaea-Lab Ltd | Professional & scientific | 2023 |
| Gafoor Wholesale Meats Ltd | Wholesale & retail | 2021 |
| Galaxel Energy Limited | Manufacturing | 2014 |
| Galaxy Hub Properties Ltd | Real estate | 2022 |
| Galaxy Motors Ltd | Wholesale & retail | 2024 |
| Galaxy Property & Retail Ltd | Wholesale & retail | 2026 |
| Galaxy Signs Limited | Manufacturing | 2023 |
| Galaxyheights Ltd | Wholesale & retail | 2025 |
| Galebrook Management Company Limited | Households | 2019 |
| Gallagher Groundworks & Construction Ltd | Construction | 2019 |
| Gallani Limited | Wholesale & retail | 2023 |
| Galleonix Limited | Information & communication | 2021 |
| Galloping Grow Limited | Manufacturing | 2015 |
| Gama Associates Ltd | Professional & scientific | 2016 |
| Game Vault Amusements Limited | Arts & recreation | 2023 |
| Game Wholesale Limited | Information & communication | 2000 |
| Gaming Xpert Limited | Wholesale & retail | 2020 |
| Gani Estates Ltd | Real estate | 2024 |
| Gani Investments Limited | Real estate | 2018 |
| Gani Retail Solutions Ltd | Wholesale & retail | 2004 |
| Ganilly Limited | Information & communication | 2018 |
| Gannon Industries Ltd | Information & communication | 2022 |
| GAO XPRESS1 Limited | Hospitality | 2026 |
| GAP Roofing Services Limited | Construction | 2004 |
| Gapp Group Limited | Administrative & support | 2020 |
| Garande Health Care Ltd | Other services | 2017 |
| Garda MX Limited | Manufacturing | 2006 |
| Gardele Ltd | Other services | 2017 |
| Garden Property Ltd | Real estate | 2025 |
| Garden Solutions Bolton Ltd | Administrative & support | 2019 |
| Gardenscape Ainsworth Limited | Administrative & support | 2022 |
| Garforth Rise Management Company Limited | Real estate | 2003 |
| Garland Change Management Limited | Professional & scientific | 2015 |
| Garland Property Investment Ltd | Real estate | 2018 |
| Garland Venture Ltd | Hospitality | 2019 |
| Garment LAB Ltd | Manufacturing | 2025 |
| Garners Plant Hire & Small Tools Limited | Administrative & support | 2025 |
| Garners Wigan Ltd | Construction | 2024 |
| Garth&Levell SS Limited | Education | 2024 |
| Gartmorn Holdings Ltd | Professional & scientific | 2025 |
| Garuda Consultancy Ltd | Wholesale & retail | 2018 |
| Gary Gray Transport Ltd | Transport & logistics | 2017 |
| Gary Williams Transport Ltd | Transport & logistics | 2025 |
| Garyow Holdings Ltd | Financial services | 2025 |
| GAS Appliance Services Limited | Construction | 2014 |
| GAS Mark 8 Limited | Information & communication | 2019 |
| GAS Monitoring Systems Ltd | Professional & scientific | 2018 |
| GAS Protect Ltd | Construction | 2009 |
| GAS Safe Plumbing and Heating Limited | Construction | 2009 |
| Gasa Enterprise Ltd | Health & social care | 2013 |
| Gascon CHS Ltd. | Construction | 2018 |
| Gasenergy Limited | Construction | 2022 |
| Gaskells Play Centre Limited | Arts & recreation | 2011 |
| Gaskells Private Day Nursery Limited | Administrative & support | 2008 |
| Gastro Milan Ltd | Construction | 2018 |