| Grenbrok Limited | Real estate | 2023 |
| Grendon & Billesley Nursery and Family Centre Ltd | Other services | 2002 |
| Grespania (UK) Limited | Construction | 2006 |
| Grest Management and Controls Ltd | Construction | 2018 |
| Grestone Realty Ltd | Real estate | 2024 |
| Grewa Investments Ltd | Real estate | 2020 |
| Grewal Food Ltd | Wholesale & retail | 2021 |
| Grewal Homes Limited | Real estate | 2022 |
| Grewal Investments Limited | Real estate | 2019 |
| Grexp Ltd | Hospitality | 2025 |
| Grey Acre Homes Ltd | Construction | 2017 |
| Grey Beards Ltd | Hospitality | 2016 |
| Grey Brick Partners Ltd | Real estate | 2025 |
| Grey Fitness Limited | Arts & recreation | 2025 |
| Grey Forge Legal Limited | Professional & scientific | 2026 |
| Grey Foxxx Ltd | Other services | 2020 |
| Grey Gables Farm Residents Management Company Limited | Households | 2019 |
| Grey Gables Property Ltd | Real estate | 2016 |
| Grey Gorilla Ltd | Professional & scientific | 2024 |
| Grey Gutters Ltd | Administrative & support | 2026 |
| Grey Matter Medical Ltd | Professional & scientific | 2022 |
| Grey Space Architecture Ltd | Professional & scientific | 2021 |
| Greybird Legal Ltd | Professional & scientific | 2025 |
| Greybridge Properties Ltd | Real estate | 2025 |
| Greybrooke Capital Ltd | Professional & scientific | 2023 |
| Greybrooke Commercial Ltd | Real estate | 2023 |
| Greybrooke Group Ltd | Professional & scientific | 2023 |
| Greybrooke Homes Ltd | Real estate | 2023 |
| Greybrooke (Walsall) Ltd | Real estate | 2025 |
| Greybrooke Ltd | Real estate | 2023 |
| Greybrooke Management Ltd | Real estate | 2023 |
| Greycious Care Ltd | Public administration | 2022 |
| Greycoat House (GS) Limited | Real estate | 2022 |
| Greyfriar Estates Ltd | Administrative & support | 2014 |
| Greyfriar Holdings UK Ltd | Financial services | 2022 |
| Greyfriar Investments Ltd | Hospitality | 2022 |
| Greyfriars Debt Recovery Services Limited | Extraterritorial | 1991 |
| Greyhaze B14 Ltd | Wholesale & retail | 2014 |
| Greyhaze Ltd | Extraterritorial | 2016 |
| Greyhaze Online Ltd | Wholesale & retail | 2015 |
| Greyhaze Rubery Limited | Wholesale & retail | 2018 |
| Greyholt Properties Limited | Real estate | 2025 |
| Greyhours Housing Ltd | Real estate | 2025 |
| Greylands Investments Limited | Real estate | 2002 |
| Greyleaf Landscape Planning Limited | Professional & scientific | 2025 |
| Greyline Construction Limited | Construction | 2013 |
| Greyroc Ltd | Financial services | 2024 |
| Greyson & Co Ltd | Financial services | 2021 |
| Greystone Investments Ltd | Real estate | 2018 |
| Greytopaz Ltd | Information & communication | 2013 |
| Greywood Estates Limited | Real estate | 2025 |
| Grfk Design Ltd | Construction | 2024 |
| Grianstad Limited | Professional & scientific | 2023 |
| Grid Carbon Ltd | Information & communication | 2023 |
| Gridfire Advisory Ltd | Professional & scientific | 2026 |
| Gridinity Ltd | Wholesale & retail | 2025 |
| Gridline Transport Ltd | Transport & logistics | 2025 |
| Gridrig Ltd | Transport & logistics | 2021 |
| Gridweld Holdings Limited | Financial services | 2017 |
| Grienex Ltd | Transport & logistics | 2024 |
| Griffen Property Service & Development Ltd | Real estate | 2019 |
| Griffin Fitness Ltd | Health & social care | 2015 |
| Griffin Freehold Management Ltd | Real estate | 2018 |
| Griffin International Limited | Financial services | 1976 |
| Griffin Productions Limited | Information & communication | 2012 |
| Griffin Wylde Independent Financial Advisors Limited | Extraterritorial | 1994 |
| Griffin Wylde Limited | Financial services | 1983 |
| Griffith Groundworks Enterprises Ltd | Construction | 2026 |
| Griffiths Construction Ltd | Construction | 2025 |
| Griffiths Developments (Leicester) Ltd | Administrative & support | 2023 |
| Griffiths Property (Leicester) Ltd | Real estate | 2019 |
| Griffiths Property Solutions Ltd | Administrative & support | 2015 |
| Griffiths Waite EOT Trustees Limited | Professional & scientific | 2023 |
| Griffiths Waite Limited | Information & communication | 1994 |
| Griffley Property Limited | Real estate | 2020 |
| Griflex Limited | Manufacturing | 2000 |
| Grigor Group Ltd | Manufacturing | 2016 |
| Grigva Ltd | Wholesale & retail | 2026 |
| Griiill Limited | Hospitality | 2019 |
| Griim Ltd | Wholesale & retail | 2020 |
| Grill & Chill (Worcester) Ltd | Hospitality | 2020 |
| Grill House Birmingham Ltd | Hospitality | 2025 |
| Grill Mania Limited | Hospitality | 2024 |
| Grill N Sauce Ltd | Hospitality | 2023 |
| Grill N Shake B70 Ltd | Hospitality | 2025 |
| Grill N Spice Birmingham Ltd | Hospitality | 2025 |
| Grill OUT (Oswestry) Limited | Hospitality | 2020 |
| Grill Village Ltd | Hospitality | 2020 |
| Grill Wold Ltd | Hospitality | 2026 |
| Grillax Limited | Hospitality | 2021 |
| Grilled Cheese Cafe Ltd | Hospitality | 2018 |
| Griller Fast Food Limited | Hospitality | 2021 |
| Griller Foods Limited | Hospitality | 2020 |
| Grillers Pizza Bar Limited | Hospitality | 2025 |
| Grillet Bristol Ltd | Wholesale & retail | 2026 |
| Grillet Taunton (UK) Ltd | Wholesale & retail | 2025 |
| Grillet Tauton Ltd | Wholesale & retail | 2026 |
| Grillin IT Ltd | Hospitality | 2025 |
| Grillo's Pizza Limited | Wholesale & retail | 2020 |
| Grills and Chicken Ltd | Hospitality | 2026 |