| Goldline Solutions Ltd | Transport & logistics | 2020 |
| Goldstar Advisory Ltd | Information & communication | 2023 |
| Golpe Brillante Ltd | Professional & scientific | 2025 |
| Gondal Medical Limited | Health & social care | 2023 |
| Gonzales Online Shop Limited | Wholesale & retail | 2024 |
| Good ADD Ventures Ltd | Manufacturing | 2024 |
| Good Chief Defence Limited | Manufacturing | 2012 |
| Good Vibe Accountancy Ltd | Professional & scientific | 2022 |
| Goodchilds Garage Limited | Wholesale & retail | 2018 |
| Goodchilds Media Limited | Professional & scientific | 2008 |
| Goodman Harding Limited | Health & social care | 2014 |
| Goodwill Hunting Limited | Professional & scientific | 2015 |
| Goodwill Logistics Ltd | Transport & logistics | 2017 |
| Gordon Road International Foods Ltd | Wholesale & retail | 2025 |
| Gornall GAS Ltd | Construction | 2026 |
| Goshawk Property Investment Ltd | Real estate | 2019 |
| Goshuvit Ltd | Wholesale & retail | 2022 |
| GOT2SWIM LLP | | 2012 |
| Goted Limited | Administrative & support | 2022 |
| Gottogo Media Ltd | Professional & scientific | 2026 |
| Goway Travels Ltd | Administrative & support | 2026 |
| GP TEC Ltd | Information & communication | 2014 |
| Gpah Resource Centre Limited | Other services | 2019 |
| GQH Legacy Investments Ltd | Real estate | 2021 |
| GQN Ltd | Professional & scientific | 2021 |
| GR Recycle Ltd | Manufacturing | 2022 |
| Grab & Brew Ltd | Wholesale & retail | 2025 |
| Grace Communications Limited | Professional & scientific | 2010 |
| Grace for Nations C.I.C. | Other services | 2022 |
| Grace Holdings Limited | Construction | 1999 |
| Gracevale Limited | | 1986 |
| Grad-Ed Consultancy Ltd | Education | 2025 |
| Graham Stallwood Fencing Limited | Construction | 2003 |
| Grand Union Vision Limited | Construction | 1993 |
| Grand&Glorious Ltd | Wholesale & retail | 2026 |
| Granite Corporate Support Limited | Extraterritorial | 2011 |
| Gransim Properties Limited | Professional & scientific | 1988 |
| Grant & Stone Limited | Wholesale & retail | 1986 |
| Grant Health Clinics Ltd | Real estate | 2020 |
| Grant Health Ltd | Health & social care | 2020 |
| Grape Expectations Wine Merchants Limited | Wholesale & retail | 2020 |
| Grape-Monkey Ltd | Professional & scientific | 2025 |
| Graphic UK Limited | Administrative & support | 2003 |
| Graphite Lettings Limited | Real estate | 2008 |
| Gravalax Ltd | Manufacturing | 2024 |
| Gravy Travel Technology Limited | Information & communication | 2011 |
| Gray Box Security Ltd | Information & communication | 2017 |
| Grayscale Medical Ltd | Administrative & support | 2022 |
| GRB Fencing Ltd | Construction | 2018 |
| Great Hall Park Residents Association Limited | Extraterritorial | 2008 |
| Great Kingshill Estates Ltd | Real estate | 2025 |
| Great LAB Technology Ltd | Administrative & support | 2022 |
| Great People Inside Limited | Professional & scientific | 2017 |
| Greatlab UK OPS Limited | Administrative & support | 2025 |
| Green & Clean Limited | Other services | 2001 |
| Green Ascent Ltd | Construction | 2023 |
| Green Deal Report Limited | Construction | 2013 |
| Green END Residents Limited | Professional & scientific | 1998 |
| Green Glen Minerals Limited | Mining & quarrying | 2020 |
| Green Metrics Ltd | Professional & scientific | 2024 |
| Green Rides Ltd | Transport & logistics | 2025 |
| Green Stone Investment Properties Ltd | Real estate | 2017 |
| Green Telecom Limited | Information & communication | 1995 |
| Greener Cleaning Services Limited | Administrative & support | 2019 |
| Greenhill Corner Limited | Real estate | 2012 |
| Greenhouse Utility Services Ltd | Construction | 2019 |
| Greenovo Ltd | Construction | 2020 |
| Greenpoint Estate Limited | Real estate | 2022 |
| Greens (Digital Printing) Limited | Manufacturing | 2013 |
| Greens (Lincoln Road) Limited | Manufacturing | 2013 |
| Greens Digital Limited | Real estate | 2002 |
| Greens Document Solutions Limited | Wholesale & retail | 2011 |
| Greens Limited | Manufacturing | 1920 |
| Greens Printing Services Limited | Manufacturing | 1996 |
| Greensrus Limited | Wholesale & retail | 2025 |
| Greentech Distribution PLC | Wholesale & retail | 2010 |
| Greentech Gaming Limited | Wholesale & retail | 2016 |
| Greentech Solutions Services Ltd | Wholesale & retail | 2023 |
| Greentiles Landscapes Ltd | Administrative & support | 2025 |
| Greentree Therapies Ltd | Health & social care | 2025 |
| Greenway Veterinary Group LLP | | 2022 |
| Greenways Property Ltd | Real estate | 2025 |
| Grenada Entertainment UK Ltd | Information & communication | 2024 |
| Grewal Painting and Decorating Ltd | Construction | 2021 |
| Grey Matter Exchange Ltd. | Professional & scientific | 2018 |
| Grey Wolf Trading Limited | Arts & recreation | 2024 |
| Greyhound Chauffeur Services Ltd | Transport & logistics | 2017 |
| Greyson Estates Ltd | Real estate | 2019 |
| Grid Defence Systems Limited | Manufacturing | 1993 |
| Griffin Foods Limited | Wholesale & retail | 2006 |
| Griffin Landscape Management Ltd | Professional & scientific | 2019 |
| Griffsys Limited | Information & communication | 2015 |
| Grill & Spice Ltd | Hospitality | 2024 |
| Grill Box Milas Ltd | Hospitality | 2025 |
| Grill Father and Sons Ltd | Hospitality | 2025 |
| Grill YOU Limited | Hospitality | 2025 |
| Grill&Fry HW Ltd | Hospitality | 2022 |
| Grillbox High Wycombe Limited | Hospitality | 2022 |
| Grillboxso Ltd | Hospitality | 2019 |
| Grimepool Limited | Arts & recreation | 2009 |