| GR Prop Trading Ltd | Financial services | 2025 |
| GR Rigging Services Ltd | Professional & scientific | 2019 |
| GR Security Ltd | Administrative & support | 2025 |
| Gr's Elite Shine Touchless Car Wash Centre Ltd | Wholesale & retail | 2024 |
| GR8 Carers Limited | Health & social care | 2024 |
| GR8 Connect Services Ltd | Administrative & support | 2023 |
| GR8 Property Investment Ltd | Real estate | 2017 |
| GR8CONNECT Ltd | Administrative & support | 2013 |
| Gr@B EAT Limited | Hospitality | 2024 |
| Grab and Drop Limited | Water & waste | 2021 |
| Grabisresources Healthcare Limited | Health & social care | 2023 |
| Grace and Martha Designs Limited | Extraterritorial | 2010 |
| Grace Court Management Company Limited | Households | 2015 |
| Grace Dent Limited | Health & social care | 2006 |
| Grace Investments Limited | Real estate | 2008 |
| Grace Solutions & Services Ltd | Information & communication | 2018 |
| Grace View Limited | Real estate | 2025 |
| Graceedge Limited | Real estate | 2025 |
| Gracie Phoot Limited | Manufacturing | 2018 |
| Graf Shipping Limited | Wholesale & retail | 2001 |
| Grajam London Limited | Construction | 2015 |
| Grampian Transport Ltd | Transport & logistics | 2021 |
| Gramu Limited | Administrative & support | 2015 |
| Grand Bazar Ltd | Wholesale & retail | 2026 |
| Grand Design Home Improvements Ltd | Construction | 2020 |
| Grand Homes Design and Build Ltd | Construction | 2024 |
| Grand Homes Developments Limited | Construction | 2026 |
| Grand Luxe Chauffeurs Ltd | Transport & logistics | 2024 |
| Grand Resilience Limited | Transport & logistics | 2026 |
| Grand Trainers TCG Ltd | Wholesale & retail | 2025 |
| Grand Trinity Limited | Real estate | 2020 |
| Granite Groundworks Limited | Construction | 2019 |
| Grant Control Systems Limited | Construction | 2007 |
| Grant Stoke Limited | Real estate | 2019 |
| Granville Court Management Limited | Households | 1999 |
| Granya Group( Holdings) Ltd | Real estate | 2024 |
| Granya Homes Ltd | Real estate | 2024 |
| Graphxc Design Ltd | Manufacturing | 2024 |
| Grassmere Homes Limited | Construction | 2018 |
| Gratitude Transport Ltd | Transport & logistics | 2024 |
| Graybox IT Solutions Ltd | Information & communication | 2011 |
| Grayz Property Limited | Real estate | 2024 |
| GRB Glazing Limited | Construction | 2025 |
| GRC Hall Ltd | Construction | 2016 |
| GRC Ready Limited | Information & communication | 2026 |
| Great Minds Consultancy and Development Ltd | Education | 2015 |
| Great Minds for Business Ltd | Professional & scientific | 2016 |
| Great Oaks Cottage Ltd | Real estate | 2014 |
| Great Value Tyres Ltd | Wholesale & retail | 2025 |
| GREAT4CARE Limited | Health & social care | 2025 |
| Greater London Food Company Ltd | Manufacturing | 2013 |
| Grecel Limited | Professional & scientific | 2012 |
| Greek Cleaning Services Ltd | Administrative & support | 2025 |
| Green Analytics Ltd Ltd | Administrative & support | 2025 |
| Green Cart Exim Limited | Wholesale & retail | 2023 |
| Green Flag Estates Limited | Other services | 2014 |
| Green Fusion Insulation Ltd | Wholesale & retail | 2024 |
| Green Horse Solutions Limited | Administrative & support | 2022 |
| Green Kashmir Solutions Ltd | Wholesale & retail | 2026 |
| Green Light Motors Ltd | Wholesale & retail | 2016 |
| Green Marine Boating Limited | Manufacturing | 2020 |
| Green Matrix Ltd | Information & communication | 2024 |
| Green Media Solutions Limited | Information & communication | 2020 |
| Green Merchant Ltd | Wholesale & retail | 2019 |
| Green Phase Building Services Ltd | Construction | 2024 |
| Green Refrigeration and Air Conditioning PVT Ltd | Construction | 2020 |
| Green Shopping Services Ltd | Wholesale & retail | 2021 |
| Green Smile LAB Limited | Health & social care | 2013 |
| Green Solar PVT Ltd | Energy | 2023 |
| Green Space Heating Ltd | Construction | 2025 |
| Green Superstore Ltd | Wholesale & retail | 2026 |
| Green Tech Ventures Limited | Information & communication | 2024 |
| Green Tower Limited | Other services | 2022 |
| Green Wings Travels Tourism Limited | Other services | 2012 |
| Greenapple Caterers Ltd | Hospitality | 2016 |
| Greener World London Limited | Water & waste | 2019 |
| Greenera Global Ltd | Wholesale & retail | 2026 |
| Greenery Hire Ltd | Information & communication | 2005 |
| Greenford Rigging Services Limited | Information & communication | 2025 |
| Greenleaf & Sons Limited | Construction | 2019 |
| Greenleaf Residence Ltd | Construction | 2025 |
| Greenlife Waste Limited | Water & waste | 2026 |
| Greenlight Properties Limited | Construction | 2022 |
| Greenpeople Digital Ltd | Information & communication | 2024 |
| Greensby Limited | Wholesale & retail | 2021 |
| Greensee Ltd | Administrative & support | 2023 |
| Greenstar Construction Ltd | Construction | 2018 |
| Greenstone Care and Recruitment Limited | Health & social care | 2020 |
| Greenteck Holdings Limited | Manufacturing | 2023 |
| Greenwave Power Ltd | Construction | 2023 |
| Greenwich Contracts Ltd | Professional & scientific | 2013 |
| Greenwire Concepts Ltd | Professional & scientific | 2023 |
| Greenworks and More Ltd | Administrative & support | 2025 |
| GREENWORLD1 Limited | Health & social care | 2023 |
| Gregg Maurice Limited | Other services | 2024 |
| Grewal Dent Limited | Health & social care | 2025 |
| Grewal Haulage Limited | Transport & logistics | 2003 |
| Grewal Residentials Limited | Real estate | 2024 |
| Grewalz Roofing Ltd | Construction | 2024 |
| Grey and Green Limited | Professional & scientific | 2000 |