| Greenhiill Construction Ltd | Construction | 2026 |
| Greenhill Developments (East Midlands) Ltd | Construction | 2022 |
| Greenhill Fryer 2021 Ltd | Hospitality | 2021 |
| Greenhill Leisure Park Limited | Hospitality | 2020 |
| Greenhood Coffee House Ltd | Hospitality | 2015 |
| Greenhouse Collective Ltd | Wholesale & retail | 2018 |
| Greenkey Solutions Ltd | Construction | 2003 |
| Greenlees Developments Limited | Real estate | 1999 |
| Greenlife Europe Limited | Real estate | 2000 |
| Greenlife Herbal Network UK Ltd | Wholesale & retail | 2023 |
| Greenlight Residential Ltd | Real estate | 2018 |
| Greenline Home Care and Supported Living Ltd. | Health & social care | 2019 |
| Greenline Staffing Solutions Ltd | Health & social care | 2015 |
| Greenline Water Treatment Services Limited | Water & waste | 2021 |
| Greenman School Interiors Ltd | Manufacturing | 2018 |
| Greenoaks (London) Limited | Real estate | 2002 |
| Greenoaks (London) Properties Limited | Real estate | 2018 |
| Greenpoint Capital Limited | Real estate | 2015 |
| Greenpoint Group Limited | Financial services | 2025 |
| Greenpoint Living Limited | Professional & scientific | 2021 |
| Greenport Holdings Ltd | Financial services | 2025 |
| Greenport-Fresh Ltd | Wholesale & retail | 2024 |
| Greenpro Solutions Limited | Administrative & support | 2010 |
| Greens Building Co Limited | Construction | 2022 |
| Greens Fabrication and Welding Ltd | Manufacturing | 2021 |
| Greens Plumbing & Heating Limited | Construction | 2007 |
| Greensville Learning Ltd | Education | 2021 |
| Greentech Road Solutions Limited | Construction | 2021 |
| Greentouch Social Care Limited | Administrative & support | 2025 |
| Greentube UK Limited | Information & communication | 2017 |
| Greenward Brothers Ltd | Administrative & support | 2011 |
| Greenwell Consulting Ltd | Administrative & support | 2009 |
| Greenwood Academies Trust | Education | 2009 |
| Greenwood Bonsai Studio Limited | Agriculture & fishing | 2022 |
| Greenwood Coffee Stop Ltd | Hospitality | 2019 |
| Greenwood Cooling Services Limited | Construction | 2007 |
| Greenwood Counselling Academy Ltd | Education | 2025 |
| Greepak Commerce Ltd | Wholesale & retail | 2025 |
| Greet Lily Property Limited | Real estate | 2003 |
| Greetad Ltd | Wholesale & retail | 2021 |
| Greg Build Ltd | Construction | 2022 |
| Greg Hill Flooring Limited | Administrative & support | 2013 |
| Greg Hill Holdings Limited | Professional & scientific | 2016 |
| Greg KAZ Ltd | Transport & logistics | 2019 |
| Greg Precious Consultancy Ltd | Public administration | 2024 |
| Greg Watson Limited | Manufacturing | 2002 |
| Greg's Fish Bar Limited | Hospitality | 2019 |
| Gregario Projects Limited | Information & communication | 2014 |
| Gregh Improvement Consulting Ltd | Professional & scientific | 2023 |
| Gregjarvez Developments Ltd | Information & communication | 2024 |
| Gregorian Estates Limited | Real estate | 2021 |
| Gregory Court Limited | Real estate | 1999 |
| Gremit Effects Limited | Wholesale & retail | 2019 |
| Grena (UK) Limited | Extraterritorial | 2005 |
| Grena Biomed Limited | Manufacturing | 2017 |
| Grendon Construction Ltd | Construction | 2016 |
| Grenfell Association of Great Britain and Ireland(The) | Health & social care | 1928 |
| Grenville Holdings Limited | Households | 2026 |
| Grewal Lettings Ltd | Extraterritorial | 2016 |
| Grey Brick Estates Ltd | Real estate | 2020 |
| Grey Diamond Enterprises Limited | Wholesale & retail | 2016 |
| Grey for NOW Games Ltd | Manufacturing | 2019 |
| Grey Transport Limited | Transport & logistics | 2021 |
| Grey Zone Holdings Ltd | Professional & scientific | 2024 |
| Grey Zone Services Ltd | Information & communication | 2024 |
| Grey's Electrical Limited | Wholesale & retail | 2009 |
| Grey's Supplies Limited | Wholesale & retail | 2023 |
| Greycat Garden Centres Limited | Financial services | 2018 |
| Greyhound PUB LLP | | 2018 |
| Greysons Construction & Renovation Ltd | Construction | 2022 |
| Greysons Properties Ltd | Real estate | 2023 |
| Greythorn Property Management Ltd | Real estate | 2020 |
| Greythorne Residential Ltd | Real estate | 2026 |
| Gribby Holdings Ltd | Financial services | 2024 |
| Grice Construction Limited | Construction | 2013 |
| Grid Accounting Ltd | Professional & scientific | 2023 |
| Grid Resilience UK Ltd | Energy | 2018 |
| Gridiron Breaks UK Limited | Wholesale & retail | 2025 |
| Gridstar Consulting Limited | Professional & scientific | 2023 |
| Griffin Build Ltd | Construction | 2024 |
| Griffin Inn Plumtree Limited | Hospitality | 2016 |
| Griffin Pictures Ltd. | Information & communication | 2016 |
| Griffiths & Sons Limited | Wholesale & retail | 2009 |
| Griffiths Pycroft Limited | Administrative & support | 2012 |
| Griffiths Pycroft Property Limited | Real estate | 2018 |
| Griffiths Pycroft Transport LLP | | 2019 |
| Griffiths Way (1-3) RTM Limited | Households | 2025 |
| Griffon Financial Limited | Financial services | 2026 |
| Grill Hood Foods Limited | Hospitality | 2026 |
| Grill Hood Limited | Hospitality | 2025 |
| Grill Sisters Ltd | Hospitality | 2025 |
| Grill Town (Nottingham) Ltd | Administrative & support | 2017 |
| Grill Town (Sneinton) Limited | Hospitality | 2026 |
| Grillos Alfreton Road Ltd | Hospitality | 2025 |
| Grillos and Pizza Limited | Hospitality | 2025 |
| Grillos Nottingham Limited | Hospitality | 2022 |
| Grillos Takeaway Limited | Hospitality | 2025 |
| GRILLZS4U Ltd | Health & social care | 2024 |
| Grimetech Pressure Washing Ltd | Administrative & support | 2025 |
| Grimsbury Trading Limited | Hospitality | 2025 |