| Green Law Solicitors Limited | Professional & scientific | 2016 |
| Green Leaves and Coffee Beans Limited | Wholesale & retail | 2025 |
| Green Light Technologies Ltd | Information & communication | 2026 |
| Green Lion Estates Ltd | Real estate | 2025 |
| Green MAN at Mursley Ltd | Hospitality | 2018 |
| Green Mortgages Ltd | Financial services | 2020 |
| Green Multipower Ltd | Other services | 2024 |
| Green Oasis Properties Ltd | Real estate | 2023 |
| Green Oasis Solutions Ltd | Hospitality | 2018 |
| Green Orange Transport Limited | Transport & logistics | 2018 |
| Green Plan Construction Limited | Construction | 2015 |
| Green Point U.K. Limited | Manufacturing | 2013 |
| Green Properties(Uk) Ltd | Real estate | 2020 |
| Green Roof Warehouse Ltd | Construction | 2025 |
| Green Sun Ltd | Real estate | 2018 |
| Green Talbot Limited | Professional & scientific | 2021 |
| Green Tree Home Cleaning Ltd | Other services | 2023 |
| Green Umbrella Ltd | Real estate | 2024 |
| Green Valley Construction Limited | Construction | 2004 |
| Green Vista Ltd | Real estate | 2023 |
| Green World Technology Global Ltd | Wholesale & retail | 2026 |
| Green Zone Enterprises Ltd | Education | 2021 |
| GREEN4SCREEN Ltd | Professional & scientific | 2021 |
| Greenacres Landscape Management Ltd | Administrative & support | 2014 |
| Greenbox Developments Ltd | Construction | 2022 |
| Greenbull Limited | Real estate | 2010 |
| GREENCARS4U Ltd | Wholesale & retail | 2024 |
| Greencroft Economics Ltd | Professional & scientific | 2019 |
| Greendawn Build Ltd | Construction | 2011 |
| Greendeer Services Limited | Construction | 2025 |
| Greener Living Ltd | Construction | 2017 |
| Greenfields Property Maintenance Ltd | Administrative & support | 2011 |
| Greengo Solutions Limited | Real estate | 2019 |
| Greenhill Edge Ltd | Information & communication | 2025 |
| Greenhood Controls Ltd | Manufacturing | 2023 |
| Greenhouse Littlebury Limited | Real estate | 2017 |
| Greenhouse Property Developments Limited | Construction | 2017 |
| Greenhouse Property Investments Limited | Real estate | 2017 |
| Greenhouse Sherington Ltd | Construction | 2023 |
| Greenhouse Witchford Ltd | Construction | 2020 |
| Greenleaf Mortgages Limited | Financial services | 2005 |
| Greenleys Wine Limited | Wholesale & retail | 2010 |
| Greenlife Care Solutions Limited | Health & social care | 2022 |
| Greenline Carpentry Ltd | Construction | 2017 |
| Greenline Technologies Global Ltd | Administrative & support | 2017 |
| Greenlink Networks Ltd | Water & waste | 2025 |
| Greenmodel AI Ltd | Information & communication | 2025 |
| Greenrock Construct Ltd | Construction | 2025 |
| Greensand Kitchen Solutions Limited | Construction | 2002 |
| Greensand Properties LLP | | 2009 |
| Greensand View (Woburn Sands) Management RTM Company Limited | Households | 2021 |
| Greensands Property Ltd | Real estate | 2018 |
| Greensmill Marketing Ltd | Wholesale & retail | 2026 |
| Greensolutions Pioneers Limited | Information & communication | 2024 |
| Greensphere Global Ltd | Wholesale & retail | 2026 |
| Greenstone Private Limited | Information & communication | 2022 |
| Greenstreets Resources UK Ltd | Professional & scientific | 2017 |
| Greentalk Consulting Ltd | Information & communication | 2023 |
| Greentech Invest UK (1) Limited | Energy | 2020 |
| Greentech Invest UK (10) Limited | Energy | 2023 |
| Greentech Invest UK (11) Limited | Energy | 2025 |
| Greentech Invest UK (12) Limited | Energy | 2025 |
| Greentech Invest UK (13) Limited | Energy | 2025 |
| Greentech Invest UK (14) Limited | Energy | 2025 |
| Greentech Invest UK (15) Limited | Energy | 2025 |
| Greentech Invest UK (16) Limited | Energy | 2025 |
| Greentech Invest UK (17) Limited | Energy | 2025 |
| Greentech Invest UK (18) Limited | Energy | 2025 |
| Greentech Invest UK (19) Limited | Energy | 2025 |
| Greentech Invest UK (2) Limited | Energy | 2020 |
| Greentech Invest UK (20) Limited | Energy | 2025 |
| Greentech Invest UK (3) Limited | Energy | 2020 |
| Greentech Invest UK (4) Limited | Energy | 2020 |
| Greentech Invest UK (5) Limited | Energy | 2020 |
| Greentech Invest UK (6) Limited | Energy | 2023 |
| Greentech Invest UK (7) Limited | Energy | 2023 |
| Greentech Invest UK (8) Limited | Energy | 2023 |
| Greentech Invest UK (9) Limited | Energy | 2023 |
| Greentech Products & Services Limited | Administrative & support | 2020 |
| Greentech Projects Holding UK Limited | Energy | 2020 |
| Greentech Services Limited | Manufacturing | 2017 |
| Greenwich Inclusion Project (Grip) | Administrative & support | 2012 |
| Greenzo Limited | Construction | 2021 |
| Greephills Business Services Limited | Real estate | 2023 |
| Greg Ltd | Transport & logistics | 2015 |
| Greg R & SON Ltd | Construction | 2010 |
| Gregor Maclennan Limited | Professional & scientific | 2020 |
| Gregory Wealth Management LLP | | 2012 |
| Grendon PH Ltd | Extraterritorial | 2021 |
| Grenville Marina Management Co. Limited | Households | 1999 |
| Gresham Pension Trustees Limited | Financial services | 1975 |
| Grewal Road Lines Limited | Construction | 2018 |
| Grey Lilium Ltd | Information & communication | 2024 |
| Grey Lime Limited | Wholesale & retail | 2025 |
| Grey Lion Estates Ltd | Real estate | 2021 |
| Greyhound MK Ltd | Hospitality | 2026 |
| Greytec Limited | Real estate | 2001 |
| Greytec Properties Limited | Real estate | 2021 |
| Grha LLP | | 2018 |
| GRHA-5NCR Ltd | Real estate | 2022 |