| G. and R. Hydraulics and Pneumatics Limited | Wholesale & retail | 1973 |
| G. B. Catering Engineers Limited | Manufacturing | 2003 |
| G. S. Facilities Management Ltd | Administrative & support | 2009 |
| G. Whittle Holdings Ltd | Financial services | 2026 |
| G. Whittle Joiners & Builders Ltd | Manufacturing | 2012 |
| G.& E.Murgatroyd Limited | Administrative & support | 1964 |
| G.A.N Projects Ltd | Construction | 2010 |
| G.A.O.T.U. Ltd | Health & social care | 2023 |
| G.B. and B. Crook Limited | Professional & scientific | 1992 |
| G.B. Meat Ltd | Wholesale & retail | 2013 |
| G.B. Watch Co. Ltd | Wholesale & retail | 2014 |
| G.B.A. Services Limited | Transport & logistics | 2000 |
| G.B.S. 4 U Limited | Construction | 2020 |
| G.C. Goodier Limited | Real estate | 1940 |
| G.D.L. Doors Limited | Construction | 1981 |
| G.E.L. Roofing & Sons Limited | Construction | 2007 |
| G.E.M (Grants Entertainment Management) Ltd | Information & communication | 2026 |
| G.K. Homes (Liverpool) Limited | Professional & scientific | 2004 |
| G.L. Taylor Limited | Agriculture & fishing | 1960 |
| G.V.R. (Catering) Limited | | 1976 |
| G1 Healthcare Limited | Health & social care | 2017 |
| G2 Capital Group Ltd | Financial services | 2026 |
| G2 Rental Limited | Real estate | 2026 |
| G2GSOLUTIONS Ltd | Professional & scientific | 2015 |
| G2ORTHOPAEDICS Limited | Health & social care | 2017 |
| G4 HUN Invest Ltd | Information & communication | 2024 |
| G42R Limited | Households | 2019 |
| G7 Geotech Limited | Professional & scientific | 2015 |
| G8 Accounting Limited | Professional & scientific | 2011 |
| GA Associates Consulting Ltd | Professional & scientific | 2023 |
| GA2 Global Ltd | Health & social care | 2025 |
| Gabahealthcare Limited | Health & social care | 2022 |
| Gabbott Recruitment Online Limited | Administrative & support | 2008 |
| Gabi & Laura Car Wash Ltd | Administrative & support | 2023 |
| Gables and Ganner Developments Ltd | Real estate | 2026 |
| Gables and Ganner Property Ltd | Real estate | 2022 |
| Gables Property Holdings Limited | Financial services | 2020 |
| Gables Scaffolding Limited | Manufacturing | 2010 |
| Gables UK Limited | Construction | 2001 |
| GAC Solutions Limited | Administrative & support | 2015 |
| Gadgets Direct Ltd | Wholesale & retail | 2022 |
| Gafoor Holding Limited | Financial services | 2017 |
| Gafoor Pure Halal Ltd | Manufacturing | 2011 |
| Gahagan Utility Services Limited | Construction | 2016 |
| Gainsborough Floor Coverings Limited | Wholesale & retail | 1978 |
| Gaintime Properties Limited | Real estate | 1991 |
| Gaist Communication Limited | Professional & scientific | 2007 |
| Galaxy Pharma Ltd | Wholesale & retail | 2020 |
| Galbiga Group PTY Ltd | Real estate | 2019 |
| Gale + Hayes Ltd | Professional & scientific | 2025 |
| Galeid Holdings Ltd. | Financial services | 2018 |
| Galeid Ltd | Manufacturing | 1957 |
| Galerija Group Ltd | Wholesale & retail | 2021 |
| Gallagher Build Limited | Construction | 2019 |
| Gallagher Joinery Services Limited | Construction | 2007 |
| Gallium Technology Limited | Manufacturing | 1997 |
| Gallo Matese Ltd | Professional & scientific | 2019 |
| Galway Chocolates UK Ltd | Real estate | 2024 |
| Gaman Properties Limited | Real estate | 2023 |
| Gambilongo Ltd | Administrative & support | 2016 |
| Gamee Limited | Financial services | 2017 |
| Gameformat Limited | Arts & recreation | 1988 |
| Gamoz Ltd | Wholesale & retail | 2026 |
| Gana Foods Limited | Manufacturing | 2025 |
| Gana Processing & Packaging Ltd | Manufacturing | 2025 |
| Ganesh News Limited | Wholesale & retail | 2011 |
| Ganner Property Ltd | Real estate | 2019 |
| GAP Convenience Distribution Limited | Wholesale & retail | 1976 |
| GAP Convenience Limited | Wholesale & retail | 2021 |
| GAP Landscapes Ltd | Administrative & support | 2011 |
| Gapfill Ltd | Professional & scientific | 2026 |
| Gapp Developments 2 Limited | Real estate | 2015 |
| Gapp Developments 3 Limited | Real estate | 2016 |
| Gapp Developments 4 Limited | Real estate | 2010 |
| Gapp Developments 5 Ltd | Health & social care | 2005 |
| Gapp Developments Limited | Real estate | 2002 |
| Gapp Holdings Limited | Real estate | 2016 |
| Garage Pinetrees NW Ltd | Wholesale & retail | 2024 |
| Garage Signs Limited | Professional & scientific | 2022 |
| Garagepride Limited | Wholesale & retail | 2007 |
| Garcia Sanchez Ltd | Real estate | 2020 |
| Garden Centre Plants Limited | Extraterritorial | 1969 |
| Garden Court (Ashton) Management Company Limited | Real estate | 2005 |
| Garden House Farms Limited | Real estate | 2004 |
| Garden Larch Limited | Manufacturing | 2011 |
| Gardners Commercial Cleaning Limited | Administrative & support | 2018 |
| Garia Software Development Ltd | Real estate | 2020 |
| Garlick Garden Machinery Limited | Wholesale & retail | 2017 |
| Garroch Investments Limited | Construction | 2021 |
| Garry Jones Painters & Decorators NW Ltd | Construction | 2014 |
| Garstang Chop Suey House 168 Limited | Hospitality | 2012 |
| Garstang Community Sports Club Ltd | Arts & recreation | 2023 |
| Garstang Computers Ltd | Wholesale & retail | 2021 |
| Garstang Country Club Limited | Hospitality | 2026 |
| Garstang DRP Ltd | Education | 2016 |
| Garstang Fast Food Ltd | Hospitality | 2025 |
| Garstang Food UK Ltd | Hospitality | 2025 |
| Garstang Football Club Limited | Arts & recreation | 2018 |
| Garstang Ground Services Ltd | Agriculture & fishing | 2024 |
| Garstang Groundworks Ltd | Construction | 2025 |