| Graymar Holdings Limited | Professional & scientific | 2008 |
| Grayston Ltd | Professional & scientific | 2018 |
| Grayston Properties Ltd | Real estate | 2020 |
| GRE Millington Contractors Limited | Construction | 2006 |
| Great Fleete Management NO. 7 Limited | Real estate | 2001 |
| Great Hanwood Community Interest Company | Hospitality | 2017 |
| Great Ness Poultry Limited | Agriculture & fishing | 2010 |
| Great Wall Enterprises Limited | Transport & logistics | 1988 |
| Greatpride Care Limited | Administrative & support | 2020 |
| Greeba Project Management Limited | Administrative & support | 2018 |
| Green & Bird Limited | Real estate | 1943 |
| Green Apple Properties Limited | Real estate | 2015 |
| Green Area(Uk) Ltd | Extraterritorial | 2022 |
| Green Canopy Company Limited | Education | 2015 |
| Green Construction Training Limited | Education | 2023 |
| Green Igloo Publishing Ltd | Information & communication | 2015 |
| Green Miners Limited | Extraterritorial | 2018 |
| Green Optic Ltd | Wholesale & retail | 2021 |
| Green Options Zero Waste Ltd | Wholesale & retail | 2024 |
| Green Planning Services Limited | Administrative & support | 2024 |
| Green Planning Solutions LLP | | 2007 |
| Green Planning Studio Limited | Administrative & support | 2013 |
| Green Power Machinery Ltd | Wholesale & retail | 2024 |
| Green Sandpiper Holdings Limited | Real estate | 2024 |
| Green Sustainable Products Company Limited | Manufacturing | 2011 |
| Green Textile Consultants Ltd | Professional & scientific | 2015 |
| Green Wase Ltd | Water & waste | 2020 |
| Greenband Limited | Construction | 1979 |
| Greenbough Developments Limited | Real estate | 2017 |
| Greenbridge Distribution Ltd | Wholesale & retail | 2026 |
| Greener Renewables Limited | Construction | 2015 |
| Greenfield (Holywell) Management Company Limited | Real estate | 2022 |
| Greenfield Recruitment Limited | Administrative & support | 2009 |
| Greenfields & District Bowling Club Limited | Arts & recreation | 1943 |
| Greenhill Pet Cremation Service Ltd | Other services | 2010 |
| Greenlight Projects Limited | Professional & scientific | 2001 |
| Greenscape Environmental Ltd | Professional & scientific | 2005 |
| Greenwood Property Conversions Ltd | Construction | 2009 |
| Greenwood Tutors Ltd | Education | 2025 |
| Gremlim Ltd | Wholesale & retail | 2024 |
| Grespace Ltd | Professional & scientific | 2024 |
| Greta RAE Limited | Wholesale & retail | 2024 |
| Gretton-Stace Holdings Ltd | Real estate | 2016 |
| Gretton-Stace Properties Ltd | Real estate | 2016 |
| Greyfriar Solutions Limited | Professional & scientific | 2005 |
| Greyhound Media Limited | Professional & scientific | 2025 |
| Greypass Limited | Real estate | 2017 |
| Greysmere Residents Association Limited | Households | 1981 |
| Greystones Hall Management Limited | Households | 2007 |
| GRG Properties Limited | Real estate | 2021 |
| Grid Align Ltd | Information & communication | 2026 |
| Grida Mobility Ltd | Transport & logistics | 2026 |
| Griffiths and Booth Holdings Limited | Real estate | 2019 |
| Grinshill Stone Quarries Limited | Mining & quarrying | 1998 |
| Grmv Consulting Ltd | Mining & quarrying | 2018 |
| Grojo Marketing Ltd | Professional & scientific | 2023 |
| Gromisito LLP | | 2011 |
| Grosvenor Car Company Limited | Wholesale & retail | 2015 |
| Grosvenor Court Enys Road Eastbourne Limited | Households | 2006 |
| Grosvenor Mansions (Sidmouth) Limited | Households | 1983 |
| Ground First Limited | Professional & scientific | 2016 |
| Groundcertain Property Management Limited | Households | 1996 |
| Groundwater Modelling Solutions Limited | Professional & scientific | 2008 |
| Groundwater Science Ltd | Professional & scientific | 2010 |
| Groundwater Solutions Ltd | Water & waste | 2013 |
| GROUNDWORK44 Limited | Construction | 2017 |
| Grove Court Freehold Management Company Limited | Households | 2006 |
| Grove END Court Management Limited | Extraterritorial | 2008 |
| Grove Farm Holidays Limited | Hospitality | 2012 |
| Growex Soft Ltd | Wholesale & retail | 2020 |
| Growroom Agency Ltd | Information & communication | 2022 |
| Growthx Ltd | Professional & scientific | 2023 |
| GRW Supplies Limited | Wholesale & retail | 2003 |
| GS & PA Reeves Limited | Wholesale & retail | 2002 |
| Gs-Mr Glass and Stone (Machinery and Robotics) UK & Ireland Ltd. | Wholesale & retail | 2019 |
| Gs-Mr Robotics Ltd | Wholesale & retail | 2020 |
| GSB Confectionery Limited | Wholesale & retail | 2025 |
| GSM Property Limited | Real estate | 2015 |
| GT Financial Consulting Ltd | Professional & scientific | 2024 |
| GT Growth Accountants Limited | Professional & scientific | 2025 |
| Gtfcoms Consulting Limited | Professional & scientific | 2024 |
| Guest Pass Ltd | Information & communication | 2025 |
| Guinevere Park Management Company Limited | Households | 2024 |
| Gulzar Halal Poultry Ltd | Wholesale & retail | 2012 |
| Guru KID Europe Ltd | Professional & scientific | 2022 |
| Guta RA Mwari (Zvimiso) | Other services | 2023 |
| GUY Goma International Ltd | Information & communication | 2022 |
| Gwalia Employment Services Limited | Administrative & support | 2019 |
| Gwaza Ltd | Wholesale & retail | 1967 |
| Gwernydd Hall Limited | Hospitality | 2026 |
| Gwilliam Homes Limited | Construction | 1987 |
| GY Placements Limited | Real estate | 2024 |
| Gymporium Ltd | Arts & recreation | 2022 |
| Gymrise Ltd | Wholesale & retail | 2025 |
| Gyros Local Limited | Hospitality | 2022 |
| H & H Dental Practices Limited | Extraterritorial | 2014 |
| H & H Roofing Limited | Construction | 2007 |
| H & M Conservation Limited | Construction | 2021 |
| H & M Restoration Limited | Construction | 2019 |
| H & N Supplies Ltd | Wholesale & retail | 2021 |