| Green Shark Investments Ltd | Financial services | 2026 |
| Green Victory Capital Ltd | Professional & scientific | 2005 |
| Green-Wood 4 YOU Ltd | Construction | 2015 |
| Greenacre Grounds Maintenance Ltd | Other services | 2024 |
| Greenacres Self Storage Limited | Hospitality | 2014 |
| GREENACRES9 Ltd | Wholesale & retail | 2021 |
| Greenbank Property Investments Ltd | Real estate | 2020 |
| Greener Ideas Limited | Administrative & support | 2025 |
| Greenfield Eyecare Ltd | Wholesale & retail | 2024 |
| Greenfield Giants Football Club CIC | Arts & recreation | 2024 |
| Greenfield Timber Flooring Ltd | Construction | 2018 |
| Greenfy Limited | Information & communication | 2023 |
| Greengate Exchange Property Limited | Real estate | 2025 |
| Greengate Jamia Masjid Oldham Ltd | Other services | 2019 |
| Greengrove Textiles Ltd | Manufacturing | 2026 |
| Greenhead Lane Properties Ltd | Real estate | 2019 |
| Greenknight NW Ltd | Construction | 2025 |
| Greenleaf Consultants Ltd | Construction | 2020 |
| Greenlight Design Solutions Limited | Professional & scientific | 2013 |
| Greenlink IT Ltd | Information & communication | 2022 |
| Greenmill Projects Ltd | Construction | 2025 |
| Greenmount Developments Limited | Construction | 1972 |
| Greenmount Homes Ltd | Construction | 2013 |
| Greennest Consultancy Limited | Health & social care | 2023 |
| Greenroom Catering Limited | Hospitality | 2015 |
| Greenslate Ltd | Administrative & support | 2021 |
| Greenstone Construction Ltd | Construction | 2011 |
| Greenvale Management Consulting Limited | Professional & scientific | 2005 |
| Greenvalley Contractors Ltd | Construction | 2024 |
| Greenview Projects Ltd | Construction | 2015 |
| Greenwood Estates Limited | Construction | 2026 |
| Greg's Lorry Transport Ltd | Transport & logistics | 2021 |
| Gregdtx Ltd | Information & communication | 2024 |
| Gregory Group Ltd | Real estate | 2024 |
| Grendon Healthcare Ltd | Wholesale & retail | 2020 |
| Grendon Limited | Real estate | 2005 |
| Grendon Locums Ltd | Health & social care | 2018 |
| Gretna Property Holdings Ltd | Households | 2020 |
| Grevlo Ltd | Information & communication | 2026 |
| Grey MAN Production Music Ltd | Arts & recreation | 2021 |
| Grey Matter Healing Ltd | Other services | 2014 |
| GRH Traders Ltd | Wholesale & retail | 2025 |
| GRI Limited | Real estate | 2024 |
| Gridfluene AI Limited | Wholesale & retail | 2025 |
| Grill Oldham Ltd | Hospitality | 2025 |
| Grillix Oldham Ltd | Hospitality | 2026 |
| Grimesbars Ltd | Hospitality | 2026 |
| Gritstone Crossfit Ltd | Arts & recreation | 2015 |
| Gritstone Estates Ltd | Real estate | 2023 |
| GRJ Accountancy Services Limited | Professional & scientific | 2023 |
| GRLABELS4SIGNS Limited | Manufacturing | 2009 |
| Grllnthrll Ltd | Hospitality | 2024 |
| Grms Ltd | Professional & scientific | 1998 |
| Groco 2023 Limited | Extraterritorial | 2002 |
| Groco 510 Limited | Financial services | 2022 |
| Groco 520 Limited | Financial services | 2022 |
| Grosvenor Cavendish Search Limited | Administrative & support | 2021 |
| Grosvenor Dental Practice Ltd | Health & social care | 2022 |
| Grotton Investments Limited | Real estate | 2008 |
| Ground UP Solutions Ltd | Construction | 2020 |
| Group 5 (UK) Ltd | Other services | 2009 |
| Group S and P Ltd | Wholesale & retail | 2024 |
| Grow Glass Limited | Extraterritorial | 2022 |
| Growcap Investments Limited | Real estate | 2018 |
| Growconvert Ltd | Information & communication | 2022 |
| Growex Global Ltd | Construction | 2025 |
| Growing Minds Daycare Ltd | Health & social care | 2025 |
| GRP 234 Limited | Mining & quarrying | 2012 |
| GRP Build Installations Ltd | Construction | 2018 |
| GRS Associates Group Ltd | Financial services | 2025 |
| Grundy's Hearing Centre Ltd | Health & social care | 2011 |
| Grupo Loca Ltd | Hospitality | 2022 |
| Grzegorz Mijal Transport Ltd | Transport & logistics | 2018 |
| GS Machinery Ltd | Wholesale & retail | 2025 |
| GS Parts Ltd | Wholesale & retail | 2024 |
| GS Print Ltd | Information & communication | 2025 |
| Gsapey Limited | Financial services | 2025 |
| GSC Holdings Ltd | Wholesale & retail | 2018 |
| GSD Financial Consulting Ltd | Professional & scientific | 2025 |
| Gspb Properties Ltd | Real estate | 2022 |
| GT Tronic Ltd | Wholesale & retail | 2025 |
| GTD BP Limited | Wholesale & retail | 2026 |
| Gtechnical Services Ltd | Construction | 2025 |
| Gtgg Trading Ltd | Wholesale & retail | 2022 |
| GTH Builders Ltd | Construction | 2020 |
| GTR Welding Services Limited | Manufacturing | 2000 |
| Guardian Logistics and Services Ltd | Transport & logistics | 2023 |
| Guardians Hire Solution Ltd | Wholesale & retail | 2025 |
| Guests of Haramayn Ltd | Administrative & support | 2025 |
| Guestway Ltd | Manufacturing | 2012 |
| Guffaw Ltd | Wholesale & retail | 2025 |
| Guidance Tuition Ltd | Education | 2024 |
| Guidedhire Ltd | Administrative & support | 2025 |
| Guilt Trip MHC Ltd | Wholesale & retail | 2024 |
| Guisborough Takeaway Limited | Hospitality | 2017 |
| Guiseley Foods Limited | Wholesale & retail | 2020 |
| Gujar Convenience Limited | Wholesale & retail | 2026 |
| Gulabson Ltd | Real estate | 2021 |
| GUN 307 Limited | Real estate | 2016 |
| GUN 75 Limited | Real estate | 2017 |