| Green Cleen (North London) Limited | Administrative & support | 2007 |
| Green Crescent Ltd | Wholesale & retail | 2021 |
| Green Dogs Vegan Limited | Hospitality | 2021 |
| Green Eaze Limited | Wholesale & retail | 2025 |
| Green Emerald Limited | Wholesale & retail | 2025 |
| Green Flower Limited | Real estate | 2021 |
| Green Fulfilment Ltd | Transport & logistics | 2011 |
| Green Garage Limited | Wholesale & retail | 2003 |
| Green Giant Limited | Education | 2016 |
| Green Harvest Development Ltd | Real estate | 2018 |
| Green Health Utilities Service Ltd | Hospitality | 2021 |
| Green Home Improvement Grants Ltd | Construction | 2020 |
| Green Investments 4 YOU Ltd | Financial services | 2023 |
| Green Kite Associates Limited | Financial services | 2019 |
| Green Leaves Supermarket Ltd | Wholesale & retail | 2026 |
| Green Line Consulting Limited | Health & social care | 2012 |
| Green Manor Building Limited | Construction | 2012 |
| Green Marine Seafood Ltd | Wholesale & retail | 2017 |
| Green Moon Developments Limited | Real estate | 2008 |
| Green New Leaf UK Limited | Wholesale & retail | 2018 |
| Green Olive Publications Ltd | Information & communication | 2014 |
| Green Place Studios Limited | Information & communication | 2023 |
| Green Plantain Limited | Hospitality | 2012 |
| Green Rapids Limited | Hospitality | 2017 |
| Green Roots Limited | Education | 2012 |
| Green Shores Capital Limited | Financial services | 2018 |
| Green State Matcha Ltd | Wholesale & retail | 2025 |
| Green Street Newsagents Limited | Wholesale & retail | 2002 |
| Green Tags UK Ltd | Wholesale & retail | 2019 |
| Green Tamarind Investments Limited | Real estate | 2019 |
| Green Team Limited | Other services | 2022 |
| Green Tech Builders Ltd | Construction | 2022 |
| Green Tech Direct Ltd | Wholesale & retail | 2010 |
| Green Valley Supermarket Limited | Wholesale & retail | 2017 |
| Green Village Limited | Wholesale & retail | 1996 |
| Greenacre Care Home Management Ltd | Financial services | 2017 |
| Greenacre Real Estate Ltd | Construction | 2021 |
| Greenair Heating Ltd | Wholesale & retail | 2012 |
| Greenbridge Advisory Limited | Professional & scientific | 2026 |
| Greenbrook Property Developments Limited | Real estate | 2007 |
| Greencrate Imports Ltd | Wholesale & retail | 2026 |
| Greenenco Limited | Professional & scientific | 2017 |
| Greenfield Place Ltd | Real estate | 2014 |
| Greenfields Investments Ltd | Real estate | 2026 |
| Greenfire Enterprises UK Ltd | Wholesale & retail | 2025 |
| Greenflow Build Limited | Construction | 2025 |
| Greenflow Heating Ltd | Construction | 2022 |
| Greenford OFF Licence & PAN House Limited | Wholesale & retail | 2025 |
| Greengoodies Limited | Wholesale & retail | 2025 |
| Greengress Ltd | Real estate | 2022 |
| Greenheart Investments Ltd | Real estate | 2019 |
| Greenhill Estate Limited | Households | 1981 |
| Greenhill Global Consultants UK Limited | Professional & scientific | 2015 |
| Greenhill Residents Association Limited(The) | Households | 1970 |
| Greenkite Ignite Limited | Financial services | 2025 |
| Greenlago Investments Limited | Real estate | 2016 |
| Greenland Fruit & VEG Ltd | Wholesale & retail | 2022 |
| Greenland Market Ltd | Wholesale & retail | 2016 |
| Greenles & Co Limited | Real estate | 1996 |
| Greenlife Health Ltd | Wholesale & retail | 2021 |
| Greenmaple Ltd | Wholesale & retail | 2010 |
| Greenoaks Construction Limited | Construction | 2006 |
| Greensea Real Estate Management Limited | Real estate | 2013 |
| Greenseer Properties Limited | Real estate | 2016 |
| Greenshaw Properties Limited | Real estate | 1993 |
| Greenspark Cleaning Ltd | Administrative & support | 2025 |
| Greenstar Technology Limited | Information & communication | 2020 |
| Greentech Corporation Ltd | Financial services | 2009 |
| Greenthumb Agro PVT Ltd | Professional & scientific | 2018 |
| Greenview Excel Limited | Financial services | 2019 |
| Greenview Flat Management (2011) Limited | Households | 2011 |
| Greenwater Marine Limited | Transport & logistics | 2014 |
| Greenway Energy Ltd | Construction | 2023 |
| Greenway Ickenham Management Limited | Households | 1984 |
| Greenway London Limited | Construction | 2020 |
| Greenwich School of Business and Finance Limited | Education | 2017 |
| Greeny Luxury Hair Limited | Other services | 2025 |
| Greenz Tees Ltd | Wholesale & retail | 2020 |
| Greg Probert Limited | Information & communication | 2021 |
| Grenka Group Ltd | Information & communication | 2021 |
| Grenvar Limited | Real estate | 2015 |
| Gresfer Trading Limited | Professional & scientific | 2007 |
| Greta Investments Ltd | Financial services | 2010 |
| Greville House Residents (Harrow) Limited | Households | 1973 |
| Grews & Co Limited | Transport & logistics | 2006 |
| Grey Alligator Limited | Hospitality | 2015 |
| Grey Bull Technologies Ltd | Information & communication | 2026 |
| Grey Door Investments Limited | Real estate | 2020 |
| Grey Homes Cambridgeshire Limited | Administrative & support | 2018 |
| Grey Recycling Limited | Administrative & support | 2017 |
| Grey Sands Capital Ltd | Professional & scientific | 2021 |
| Grey Sands Ltd | Professional & scientific | 2022 |
| Greyharbour Property Limited | Real estate | 2026 |
| Greyhound Software Limited | Information & communication | 2021 |
| Greymattersoftware Ltd | Professional & scientific | 2022 |
| Greywolf Roofing Limited | Construction | 2020 |
| Grfi Holdings Limited | Financial services | 2022 |
| Grid 24 Limited | Professional & scientific | 2001 |
| Griff Strings Ltd | Arts & recreation | 2026 |
| Griffin Chase Ltd | Administrative & support | 2020 |