| Gradient Services Ltd | Nottingham | 2025 |
| Grading Limited | Keston | 2019 |
| Graemes Waste Solutions Ltd | Campbeltown | 2014 |
| Grafham Crafts Furniture Limited | | 1982 |
| Graftt Limited | Kenilworth | 2024 |
| Graham Dawson Metal Recycling Ltd | Preston | 2012 |
| Graham Hilborne Haulage Limited | Wincanton | 2016 |
| Graham Recycling Group Ltd | Newport | 2022 |
| Graham's Recycling Services Limited | Newport | 1997 |
| Gran Plastics Upvc Limited | Bradford | 2018 |
| Grand Strategy Solutions Ltd | Watford | 2021 |
| Grange Environmental Services Limited | Derby | 2023 |
| Grange Farm Renewable Energy Limited | Stowmarket | 2013 |
| Grange Farm Waste Management Company Limited | Lincoln | 2006 |
| Grange Landfill Limited | Sheffield | 2015 |
| Granite Ridge Developments Ltd | Hayes | 2025 |
| Grant Henderson Transport Ltd. | Hamilton | 2001 |
| Grant's Recycling & Waste Ltd | London | 2024 |
| Grantham Industries Limited | Louth | 2001 |
| Grants Grabs Ltd | Wellingborough | 2022 |
| Grants Metals Limited | Stourbridge | 2010 |
| Granu Tech Solutions Limited | Ashton-Under-Lyne | 2023 |
| Granurite Limited | Rugeley | 2014 |
| Granville Ecopark Limited | Dungannon | 2006 |
| Grapevine Document Services Limited | Plymouth | 2023 |
| Graphic Impressions Limited | Louth | 1982 |
| Grassroots Recycling Ltd | Warminster | 2006 |
| Gravel Works Ltd | Llanelli | 2014 |
| Gray Bros Ltd | Bromley | 2022 |
| Gray Bros. (Bermondsey) Limited | Sidcup | 1992 |
| Gray Composting Services Limited | Tayside | 2005 |
| Gray Green BIO Solutions Limited | Sidcup | 2017 |
| Grayland Express Limited | Robertsbridge | 2025 |
| Grays H Metals Limited | Rochester | 2017 |
| GRC Aquatech Ltd | Insch | 2010 |
| GRC Plant Ltd | Dundee | 2024 |
| Greanware Ltd | Cambridge | 2025 |
| Grease Removal Units Limited | London | 2011 |
| Grease Trap Solutions Ltd | Chelmsford | 2023 |
| Greasecycle Ltd | Sacriston | 2024 |
| Greased Lightning (OIL Management Services) Limited | Bedford | 2007 |
| Great Eastern Waste Limited | | 2002 |
| Great ELM Natural Water Ltd | Frome | 2025 |
| Great ELM Utilities Limited | Frome | 2020 |
| Great Green Systems Limited | Leeds | 2008 |
| Great Holt Management Company Limited | Farnham | 1983 |
| Great JJB Holding Company Limited | Middlesbrough | 2020 |
| Great Journey Ltd | London | 2015 |
| Great Newra Transport & Recycling Ltd | Newport | 2011 |
| Great North Air Ambulance Service Trading Company Limited | Eaglescliffe | 1999 |
| Great Northern Cleaning Ltd | Hull | 2005 |
| Great Towers Logistics Ltd | Didcot | 2022 |
| Great Water Limited | Weybridge | 2009 |
| Great Western Recycling Limited | Bristol | 2012 |
| Great Yarmouth Services Limited | Great Yarmouth | 2022 |
| Greatbay Limited | Swanley | 2005 |
| Greatclough Trading Ltd | Rossendale | 2015 |
| Greater London Drainage Ltd | Hatfield | 2010 |
| Greater London Haulage Limited | Hertford | 2012 |
| Greater London Surveys Ltd | Stevenage | 2018 |
| Greater London Waste Disposal Limited | Enfield | 1997 |
| Greater Manchester Skip Hire Ltd | Manchester | 2020 |
| Greater Multitude Community Interest Company | Sheffield | 2025 |
| Greatfey UK Company Limited | London | 2013 |
| Green & Sons Waste Management Ltd | Bristol | 2023 |
| Green 4 Life Recycling Limited | Loughborough | 2008 |
| Green 4 Today Ltd | London | 2022 |
| Green Agenda Limited | Edinburgh | 2015 |
| Green and Noble Ltd | Kingston Upon Thames | 2026 |
| Green and Pleasant Renewables Ltd | Exmouth | 2011 |
| Green BAG Ltd | Sidcup | 2025 |
| Green BIN Hull Ltd | Hull | 2025 |
| Green BIO Fuels (UK) Limited | Selby | 2012 |
| Green Bottoms Limited | Market Harborough | 2009 |
| Green Box Resources Ltd | Glasgow | 2021 |
| Green Bridge Trade Ltd | London | 2024 |
| Green Broker Services Limited | Preston | 2024 |
| Green Bros Utilities Ltd | Manchester | 2021 |
| Green Build Environmental Limited | Rickmansworth | 2013 |
| Green Channel Recycling Limited | Birmingham | 2014 |
| Green Circle Polymers Limited | North Berwick | 2014 |
| Green City Recycling Ltd | Billingshurst | 2016 |
| Green Clean Waste Limited | Barnet | 2026 |
| Green Cleen (Shropshire) Limited | Stafford | 2014 |
| Green Cleen (South East) Limited | Tunbridge Wells | 2002 |
| Green Compost Services Limited | Milton Keynes | 2001 |
| Green Create W2V Limited | London | 2018 |
| Green Credentials Limited | Liverpool | 2026 |
| Green Deal Essex Limited | Maldon | 2013 |
| Green Demolition & Remediation Limited | Warrington | 2014 |
| Green Designs Limited | Brighton | 2013 |
| Green DOT Ltd | Cambridge | 2022 |
| Green Drain Cleaning Services Ltd | Greenford | 2025 |
| Green Earth (Stairfoot) Limited | Manchester | 2023 |
| Green Earth (Weston) Limited | Manchester | 2023 |
| Green Earth Group Limited | Dagenham | 2016 |
| Green Earth Holdings Limited | Stoke On Trent | 2017 |
| Green Earth Regeneration Ltd | Ruislip, | 2025 |
| Green Earth Restorations Limited | Manchester | 2012 |
| Green Eco Loop Limited | Aberdeen | 2026 |