| Green Silica Ltd | Wholesale & retail | 2024 |
| Green Sky Consulting Limited | Professional & scientific | 2017 |
| Green ST Design & Build Ltd | Construction | 2020 |
| Green ST Developments Ltd | Construction | 2025 |
| Green Upshoot Limited | Real estate | 2020 |
| Greener Life Ltd | Other services | 2019 |
| Greenery Construction Ltd | Manufacturing | 2024 |
| Greenery Housing Ltd | Real estate | 2024 |
| Greenfield Engineering Design Consultants Ltd | Professional & scientific | 2019 |
| Greenfield Store Limited | Wholesale & retail | 2024 |
| Greenfinch Openair Leisure Facilities Limited | Extraterritorial | 1993 |
| Greenfox Solutions Ltd | Information & communication | 2022 |
| Greengen Supplies Ltd | Wholesale & retail | 2024 |
| Greentech Maintenance & Engineering Ltd | Administrative & support | 2025 |
| Greenvolt International Power UK Holdco Limited | Financial services | 2023 |
| Greenvolt Power UK Limited | Professional & scientific | 2022 |
| Greenway Offices Ltd | Real estate | 2019 |
| Greenway Properties Limited | Real estate | 2004 |
| Greenwhitestar Acquisitions Limited | Financial services | 2014 |
| Greenwood Bros. (Builders) Limited | Real estate | 1936 |
| Greenwood Engineering Consultants Limited | Administrative & support | 2007 |
| Greenwood Fryer Ltd | Hospitality | 2023 |
| Greenwood Fryery Limited | Hospitality | 2016 |
| Greenwood Medical Consultancy Ltd | Health & social care | 2016 |
| Greenwood Warrington Ltd | Hospitality | 2025 |
| Greenwoods of Cheshire Limited | Wholesale & retail | 2012 |
| Greg's Motors Ltd | Wholesale & retail | 2024 |
| Greggs Plastering Ltd | Administrative & support | 2025 |
| Gregory Construction Services Ltd | Professional & scientific | 2022 |
| Gregory Owen Aviation Ltd | Administrative & support | 2025 |
| Gregs Transport Solutions Ltd. | Transport & logistics | 2015 |
| Gresley Power Ltd | Energy | 2019 |
| Grewal Properties Limited | Households | 2007 |
| Grey Diamonds Consultancy Ltd | Information & communication | 2018 |
| Grey Wing Limited | Professional & scientific | 2016 |
| Greys Hall Power Limited | Energy | 2016 |
| Greysky TEC Services Limited | Professional & scientific | 2017 |
| Greystone Construction (Warrington) Limited | | 1988 |
| Grgb Consulting Ltd | Other services | 2018 |
| GRH Welltech Ltd | Administrative & support | 2016 |
| Griffemere Production Services Limited | Arts & recreation | 2025 |
| Griffin Design Engineering Ltd | Administrative & support | 2007 |
| Griffin People Consulting Ltd | Administrative & support | 2026 |
| Griffin Strength Gym S.C Ltd | Arts & recreation | 2026 |
| Griffin-Mason Limited | Other services | 2019 |
| Griffith Communications Limited | Professional & scientific | 2015 |
| Griffiths Engineering Design Services Limited | Administrative & support | 2007 |
| Grillon Properties Ltd | Real estate | 2019 |
| Grimshaw Findings Ltd | Wholesale & retail | 2023 |
| Grish Consulting Limited | Information & communication | 2017 |
| Grke Limited | Hospitality | 2024 |
| Grnnd Limited | Agriculture & fishing | 2020 |
| Groby Investments Limited | Financial services | 2022 |
| Groco 617 Limited | Financial services | 2026 |
| Groke Brgr Ltd | Hospitality | 2021 |
| Grollen Developments Ltd | Construction | 2022 |
| Groom Formal Ltd | Wholesale & retail | 2015 |
| Groom Lounge Limited | Other services | 2018 |
| Grosvenor Capital Brokers Limited | Financial services | 2023 |
| Grosvenor Capital Group Ltd | Financial services | 2021 |
| Ground Materials Limited | Wholesale & retail | 2020 |
| Ground Matrix Ltd | Administrative & support | 2025 |
| Ground Risk Limited | Professional & scientific | 2021 |
| Grounded Logistics Consulting Limited | Professional & scientific | 2025 |
| Groundspace Ltd | Construction | 2024 |
| Grove Project Consultancy Limited | Administrative & support | 2013 |
| Grove Project Management Ltd. | Construction | 2001 |
| Grove Studio Productions Limited | Administrative & support | 2014 |
| Groves Town Planning Ltd | Professional & scientific | 2017 |
| Grow Consultancy Services Limited | Professional & scientific | 2018 |
| GROWING@FIELD28 Limited | Agriculture & fishing | 2018 |
| Growth Machine Ltd | Professional & scientific | 2025 |
| Grpe Limited | Professional & scientific | 2017 |
| GRS Instrumentation Limited | Administrative & support | 2013 |
| Grst BSS Ltd | Information & communication | 2020 |
| Gryphos Ltd | Information & communication | 2023 |
| Grzegorz Smolczyk Transport Limited | Transport & logistics | 2015 |
| Grzegorz Wojcik Transport Ltd | Transport & logistics | 2025 |
| GS Highway Services Ltd | Information & communication | 2019 |
| GS Planning Limited | Construction | 2024 |
| GS Transport Services Limited | Transport & logistics | 2020 |
| GSB Design Ltd | Administrative & support | 2008 |
| GSE 3 UK Holdings Limited | Financial services | 2019 |
| GSE 3 UK Limited | Financial services | 2019 |
| GSH Electrical Solutions Ltd | Professional & scientific | 2018 |
| GSI Hawthorn Limited | Construction | 2021 |
| GSI Howgrove Limited | Construction | 2021 |
| GSL Project Management Services Limited | Professional & scientific | 2018 |
| Gslnnm Enterprises Limited | Administrative & support | 2019 |
| GSM Management Services Ltd | Other services | 2017 |
| GSR (North West) Limited | Information & communication | 2018 |
| GSR Services Private Ltd | Wholesale & retail | 2013 |
| Gsts Solutions Limited | Administrative & support | 2014 |
| Gsva Telecom Ltd | Information & communication | 2019 |
| GSZ Transport & Taxi Services Ltd | Transport & logistics | 2025 |
| GT Cooker Repairs Limited | Other services | 2010 |
| GT Surface Cleaning Ltd | Administrative & support | 2025 |
| GT3 Consulting Ltd | Information & communication | 2026 |
| GTB Sports Ltd | Arts & recreation | 2018 |
| Gtec Training Limited | Education | 2007 |