| Greenline Engineering Surveys Limited | Professional & scientific | 2014 |
| Greenorange Consulting Ltd | Professional & scientific | 2023 |
| Greenpoint Accounting Limited | Professional & scientific | 2014 |
| Greenshire Limited | Hospitality | 2016 |
| Greenspan Environmental Services Ltd | Administrative & support | 2018 |
| Greenstone Property Ventures Ltd | Real estate | 2022 |
| Greenvale Property Ltd | Real estate | 2021 |
| Greenways Residents Association Limited | Hospitality | 1986 |
| Greenwood Place Management Company Limited | Households | 2002 |
| Greets Green Management Company Limited | Households | 2016 |
| Gregan Court Management Company Limited | Households | 1990 |
| Greltime Limited | Households | 1989 |
| Gresham Court Management (Worcester) Co. Ltd. | Households | 1993 |
| Gresham Court Residents Association Limited | Households | 1980 |
| Gresty Tree Care Ltd | Agriculture & fishing | 2021 |
| Greville Lodge Management (Bayswater) Limited | Households | 1993 |
| Grey Reptile Ltd | Wholesale & retail | 2017 |
| Greyces Arts Tattoo Ltd | Other services | 2026 |
| Greycoat House Management Company Limited | Real estate | 1995 |
| Greyhound Court Winslow Management Limited | Households | 2002 |
| Greyhound Literary Agents Ltd | Information & communication | 2014 |
| Greylands Advisory Limited | Administrative & support | 2015 |
| Greylark Motors Ltd | Wholesale & retail | 2024 |
| Greystock Properties Limited | Construction | 1996 |
| Greystone Investment Group Limited | Real estate | 2019 |
| Greystow Property Management Limited | Real estate | 2013 |
| Greytiles Freehold Limited | Households | 2003 |
| Gridberry Limited | Wholesale & retail | 1985 |
| Gridcore Solutions Ltd | Professional & scientific | 2025 |
| Griddle Smash Limited | Hospitality | 2025 |
| Griffiths and Co Independent Advocacy Group Ltd | Administrative & support | 2026 |
| GRILL16 Limited | Hospitality | 2024 |
| Grilliciousperi.Co.Uk Ltd | Hospitality | 2026 |
| Grilling Chicken Flavours Kickin Limited | Hospitality | 2025 |
| Grillos Properties Limited | Real estate | 2023 |
| Grindley Gardens 1967 Limited | Extraterritorial | 2014 |
| Grit & Grace Global Ltd | Health & social care | 2024 |
| Gritas Solutions Limited | Administrative & support | 2026 |
| Groomed Film Ltd | Arts & recreation | 2019 |
| Groomingtails Surrey Ltd | Other services | 2016 |
| Grosvenor 15 Property Management Company Ltd | Households | 2017 |
| Grosvenor Gardens (ST. Neots) Homes Limited | Households | 1987 |
| Grosvenor Mews (Reigate) Limited | Households | 1998 |
| Grotex - VM Limited | Administrative & support | 2018 |
| Ground Consultancy Limited | Information & communication | 2018 |
| Ground UP Investments Limited | Real estate | 2021 |
| Groundcircle Limited | Real estate | 1978 |
| Groundconcept Property Management Limited | Households | 1999 |
| Grounded Developments Group Limited | Professional & scientific | 2020 |
| Grounded Developments Holdings Limited | Real estate | 2020 |
| Groundformal Property Management Limited | Households | 1995 |
| Groundspot Property Management Limited | Households | 1987 |
| Group X Holdings Limited | Financial services | 2026 |
| Groupji Limited | Information & communication | 2022 |
| Grove & Grover Limited | Wholesale & retail | 2014 |
| Grove Hall Limited | Households | 1992 |
| Grove Lodge (1995) Limited | Real estate | 1995 |
| Grove Road Channel Limited | Wholesale & retail | 2021 |
| Grovebridge Limited | Other services | 2023 |
| Growlery Limited | Real estate | 2022 |
| Growntreasure CIC | Arts & recreation | 2025 |
| Growth Minded Life Limited | Professional & scientific | 2023 |
| Growthxonline Limited | Professional & scientific | 2026 |
| Growtier Ltd | Wholesale & retail | 2014 |
| Growwtechuk Ltd | Information & communication | 2026 |
| Grum Peak UK Ltd | Real estate | 2014 |
| Grupa KN UK Limited | Professional & scientific | 2015 |
| GS Select Ltd | Professional & scientific | 2020 |
| GSB Delivery Ltd | Hospitality | 2025 |
| GSG (UK) Limited | Hospitality | 2004 |
| GSK Private Limited | Hospitality | 2024 |
| GSL Team Ltd | Construction | 2022 |
| GSL Transport (UK) Limited | Transport & logistics | 2008 |
| GSN Media Group Ltd | Information & communication | 2025 |
| Gsstore Ltd | Wholesale & retail | 2024 |
| GT Buildrite Construction Ltd | Construction | 2023 |
| GT Electric Scooters Ltd | Wholesale & retail | 2020 |
| GTA Property Management Ltd | Real estate | 2024 |
| GTC Training Consultants Ltd | Administrative & support | 2023 |
| Gtintoken Ltd | Information & communication | 2023 |
| GTY Trans Ltd | Transport & logistics | 2024 |
| Guardian Court RTM Company Limited | Households | 2010 |
| Guardian Shield (Sussex) Ltd | Wholesale & retail | 1984 |
| Guardian Star House Ltd | Health & social care | 2025 |
| Guardianconsulting Ltd | Professional & scientific | 2018 |
| Guidar Ltd | Transport & logistics | 2025 |
| Guiding Hands Organisation C.I.C. | Wholesale & retail | 2011 |
| Guiding Hands Services Limited | Professional & scientific | 2016 |
| Guild Court (Bristol) Management Limited | Households | 2013 |
| Guildbrook Properties Limited | Professional & scientific | 1970 |
| Guildford Road (Lightwater) Management Limited | Households | 2000 |
| Guildhall House Freehold Limited | Households | 2024 |
| Guildown Court Limited | Households | 2003 |
| Gujjar Brothers (2017) UK Ltd | Transport & logistics | 2017 |
| Gulf First Container Line ( UK ) Ltd | Transport & logistics | 2013 |
| Gumtree IP AUS Holding Ltd | Administrative & support | 2021 |
| Gungor Construction Ltd | Construction | 2025 |
| Gunnersbury Court Limited | Professional & scientific | 1995 |
| Gunter & Hayes Ltd | Transport & logistics | 2026 |
| Gurbakash Ltd | Wholesale & retail | 2012 |