| GP Vape Shop Ltd | Wholesale & retail | 2025 |
| GP&P2008 Ltd | Hospitality | 2022 |
| GPM Cladding and Powder Coating Ltd | Manufacturing | 2019 |
| GPS Building and Maintenance Ltd | Construction | 2018 |
| GPS PVT Ltd | Wholesale & retail | 2023 |
| GPS Scaffolding Specialists Limited | Construction | 2023 |
| GPW Group Ltd | Water & waste | 2025 |
| GQ Telecom Equipment Ltd | Wholesale & retail | 2025 |
| GR Management Consultants Ltd | Professional & scientific | 2019 |
| GR2E Limited | Manufacturing | 2024 |
| GR33N Group (G2) Ltd | Construction | 2021 |
| GR33N Group Ltd. | Financial services | 2013 |
| GR33N Homes Limited | Construction | 2014 |
| Grab & Go (Doncaster) Ltd | Wholesale & retail | 2025 |
| Grab Burrito Limited | Hospitality | 2025 |
| Grabo Foods Distribution Ltd | Wholesale & retail | 2024 |
| Graboto Limited | Extraterritorial | 2013 |
| Grace Casper Ltd | Manufacturing | 2023 |
| Grace Louise Properties Ltd | Real estate | 2023 |
| Graceland Medics Limited | Health & social care | 2022 |
| Graceland Realty Limited | Real estate | 2024 |
| Gracemiles Logistics Limited | Transport & logistics | 2022 |
| Grad AI Limited | Information & communication | 2025 |
| Grade a Plant Training Ltd | Construction | 2025 |
| Grade a Shopfitting & Joinery Solutions Ltd | Construction | 2026 |
| Grade Zero Ltd | Other services | 2022 |
| Gradplus Limited. | Administrative & support | 2001 |
| Grads Transport & Training Ltd | Education | 2016 |
| Graftlocal Ltd | Administrative & support | 2025 |
| Grafton Roofing Limited | Construction | 2023 |
| Graftson & Company Ltd | Other services | 2020 |
| Graham Botham Consulting Ltd | Professional & scientific | 2026 |
| Graham Godfrey Limited | Arts & recreation | 2014 |
| Graham Towler Electrical Limited | Construction | 2023 |
| Graham Tulley Limited | Professional & scientific | 2016 |
| Graham Varga Limited | Professional & scientific | 2014 |
| Graham's Funfairs Limited | Arts & recreation | 2024 |
| Grahams Bakery Ltd | Wholesale & retail | 2008 |
| Grahams Property Services Ltd | Construction | 2015 |
| Graholfin Limited | Wholesale & retail | 2026 |
| Grainger Appleyard Solicitors Limited | Professional & scientific | 2016 |
| Grainger TSS Ltd | Construction | 2024 |
| Grainger's Transport Limited | Transport & logistics | 2024 |
| Grammi Fritti Holding Limited | Financial services | 2022 |
| Granby Childcare Limited | Health & social care | 2015 |
| Granby Holdings Limited | Professional & scientific | 2016 |
| Grand Gill Group Ltd | Wholesale & retail | 2023 |
| Grand Jola Properties Limited | Real estate | 2025 |
| Grandshore Limited | Extraterritorial | 2013 |
| Grange Farm (Barnby Moor) Limited | Agriculture & fishing | 1975 |
| Grange Fields Apartments Management Company Limited | Households | 2002 |
| Grange Health Ltd | Health & social care | 2010 |
| Grange International Ltd | Real estate | 2024 |
| Granitepeak Engineering Ltd | Extraterritorial | 2026 |
| Granny ANN Limited | Professional & scientific | 2022 |
| Grantearl Limited | Construction | 1983 |
| Granton Associates Limited | Professional & scientific | 2023 |
| Granville Homes Limited | Construction | 1986 |
| Graphco Bidco Limited | Financial services | 2024 |
| Graphene Limited | Wholesale & retail | 2015 |
| Graphics King Ltd | Wholesale & retail | 2020 |
| Grasscroft Park Homes Limited | Hospitality | 2019 |
| Grasslands (Aylesbury) Management Company Limited | Households | 1986 |
| Grassroots Events Limited | Administrative & support | 2024 |
| Gratian Fast Delivery Ltd | Transport & logistics | 2025 |
| Gravel Master Limited | Wholesale & retail | 2010 |
| Gravelworth Limited | Construction | 1981 |
| Graventhix Developments Ltd | Extraterritorial | 2026 |
| Gravil Consultancy Limited | Information & communication | 2002 |
| Gravitonforge Technologies Ltd | Information & communication | 2025 |
| Gravity Coded Limited | Information & communication | 2025 |
| Gray & Sons Interior Shopfitting Limited | Construction | 2011 |
| Gray & Sons Investments UK Limited | Real estate | 2013 |
| Gray Store Limited | Wholesale & retail | 2026 |
| Graycom Limited | Information & communication | 2013 |
| Grayde Enterprises Limited | Wholesale & retail | 2023 |
| Graydon Consulting Limited | Construction | 2020 |
| GRAYTRANSPORT74 Ltd | Transport & logistics | 2025 |
| GRB Compliance Services Ltd | Administrative & support | 2024 |
| GRE Projects Ltd | Construction | 2021 |
| Great Care Support Limited | Health & social care | 2020 |
| Great Children Support Services Ltd | Health & social care | 2026 |
| Great Geeks Ltd | Information & communication | 2010 |
| Great Leaders Ltd | Manufacturing | 2024 |
| Great Minds Creative Limited | Professional & scientific | 2002 |
| Great Oaks Developments Limited | Real estate | 2026 |
| Great Wall Chinese Food Ltd | Hospitality | 2025 |
| Great Wall Chinese Hot Food Takeaway Limited | Hospitality | 2017 |
| Greater Potentials Limited | Administrative & support | 2006 |
| Greathome Properties Limited | Construction | 1994 |
| Greatlife Limited | Wholesale & retail | 2023 |
| Greatwall Plast Limited | Manufacturing | 2025 |
| Greaves and Sons Properties Ltd | Real estate | 2023 |
| Greaveswood Estates Ltd | Real estate | 2026 |
| Greek Shipping Hall of Fame Limited | Administrative & support | 2012 |
| Green Apple Properties (Northern) Limited | Real estate | 2021 |
| Green Bros Limited | Wholesale & retail | 2005 |
| Green Bros Services Ltd | Other services | 2013 |
| Green Chimney Ltd | Manufacturing | 2013 |
| Green Circle Advisory Ltd | Professional & scientific | 2024 |