| Greenpaddocks Ltd | Taunton | 2007 |
| Greenplant Farm Ltd | Manchester | 2025 |
| Greenquest Limited | | 1974 |
| Greenrealm Limited | Wirral | 2026 |
| Greenrev Limited | Orpington | 2020 |
| Greenridge Forestry Ltd | Derby | 2026 |
| Greens (Cornwall) Limited | Redruth | 2009 |
| Greens Farming Limited | Ely | 1986 |
| Greens for Good Ltd | Liverpool | 2020 |
| Greens Made Easy Ltd | London | 2022 |
| Greens of Devon Ltd | Exeter | 2009 |
| Greens of Oakley Ltd | Callington | 2025 |
| Greens of Soham Limited | Ely | 2000 |
| Greens on Toast Ltd | Grimsby | 2023 |
| Greensale Limited | Carlisle | 2003 |
| Greenscape Garden Maintenance Ltd | Hitchin | 2013 |
| Greenscape Limited | | 1999 |
| Greenscapes Tree Care & Land Management Ltd | Ryde | 2022 |
| Greenseed International Limited | Ely | 1979 |
| Greenshields Agri Limited | Edinburgh | 2010 |
| Greenshoots Limited | Chatteris | 2003 |
| Greenside Tree Services Ltd | Falmouth | 2023 |
| Greensky Forestry Ltd | Llangadog | 2023 |
| Greensmith Forests Ltd | Ulverston | 2026 |
| Greensmiths Limited | Littlehampton | 2021 |
| Greensolve Ltd | Crawley, West Sussex | 2024 |
| Greensphere Grounds Ltd | Northallerton | 2022 |
| Greensprout Services Ltd | Birmingham | 2025 |
| Greensted Arboricultural Consultancy Ltd | Braintree | 2024 |
| Greensteds Tree Surgery Limited | Ingatestone | 2022 |
| Greensteps Fields Ltd | Plymouth | 2025 |
| Greenstone Fishing Limited | Isle Of Barra | 2020 |
| Greenstone Pest Control Ltd | Gloucester | 2014 |
| Greensward Supplies Ltd | London | 2024 |
| Greentech Agriworks Ltd | Lincoln | 2025 |
| Greentimber Forest Products Limited | Herts | 2006 |
| Greentoft Farms Limited | Wick | 1975 |
| Greentower Farms Limited | Lanark | 1966 |
| Greenvale AP Limited | March | 1996 |
| Greenvale Growing Ltd. | Berwickshire | 2004 |
| Greenvale Holdings Limited | March | 2002 |
| Greenville Dairies Ltd | Omagh | 2018 |
| Greenway Bloodstock Limited | Chester | 2020 |
| Greenway Farm Livery Limited | Swindon | 2026 |
| Greenway Farm Services Ltd | Wareham | 2025 |
| Greenway Fruit Farm Limited | Chichester | 2015 |
| Greenway Poultry Limited | Brecon | 2003 |
| Greenway Tree Care Ltd | Cheltenham | 2018 |
| Greenways Turf Limited | Wirral | 2012 |
| Greenweald Ltd | Dorchester | 2008 |
| Greenwell Equilibrium Ltd | Rowlands Castle | 2025 |
| Greenwell Farms Ltd | Rowlands Castle | 2022 |
| Greenwell Tree Services Ltd | St. Leonards-On-Sea | 2020 |
| Greenwold (Yorkshire) Limited | Driffield | 2001 |
| Greenwood Bonsai Studio Limited | Nottingham | 2022 |
| Greenwood CGS Ltd | Lewes | 2026 |
| Greenwood Farm Contracting Limited | Leyburn | 2017 |
| Greenwood Glamping and Fisheries Ltd | Rugby | 2022 |
| Greenwood Pigs Ltd | Duns | 2020 |
| Greenwood Sanctuary CIC | Atherstone | 2021 |
| Greenwood Tree Surgeons Limited | Windsor | 2012 |
| Greenwood's Biomass Limited | Chobham | 2024 |
| Greenwood's Tree Contractors Limited | Chobham | 2020 |
| Greenworx Ltd | Darlington | 2012 |
| Green’S Family Farm Ltd | Reading | 2025 |
| Greetham Farming Company Limited | Horncastle, | 1960 |
| Greg's Sea Enterprises Ltd | Southwick | 2020 |
| Gregg Agri Services Ltd | Girvan | 2014 |
| Gregor Smith Limited | Peterhead | 2025 |
| Gregorio's Produce Limited | Hoddesdon | 2013 |
| Gregory Agri Limited | Yeovil | 2012 |
| Gregson and Howe Bloodstock Limited | Edinburgh | 2019 |
| Greig Elliott Ltd | Congresbury | 2010 |
| Greig’S Tree Service’S Ltd | Clacton On Sea | 2021 |
| Grendon Garage Limited | Buckingham | 2002 |
| Grendon Lakes Fishery Ltd | Grendon | 2013 |
| Grendon Land Limited | Hinckley | 2011 |
| Grendon Manor Farm Limited | Bromyard | 2012 |
| Greniers DU Monde Ltd | London | 2022 |
| Grenville Carp Lake Limited | Ashford | 2025 |
| Gresford Pastures Ltd | Wrexham | 2025 |
| Gresham Farms Limited | Fakenham | 1955 |
| Gresham House Forest Funds General Partner Limited | London | 2008 |
| Gresham Land Co. Ltd | Waltham Abbey | 1973 |
| Gresham Shoot Club Limited | Norwich | 2010 |
| Gresham Wood Industries Limited | Stow-Cum-Quy | 1973 |
| Gresty Tree Care Ltd | Croydon | 2021 |
| Gretton & Co. Limited | Worcester | 2002 |
| Grewar Farming (Careston) Ltd | Perthshire | 2021 |
| Grey Field Poultry Limited | Maghera | 2019 |
| Grey Mare Hill Cottage Farming Ltd | Middlesbrough | 2005 |
| Grey Matter Works Ltd | London | 2016 |
| Greybird Solutions Limited | Leighton Buzzard | 1997 |
| Greyfield Wood Community Interest Company | Reading | 2020 |
| Greyfriars Mushrooms Limited | Elgin | 1988 |
| Greyhill Holdings Ltd | Magherafelt | 2024 |
| Greyhound Spa Limited | Wincanton | 2025 |
| Greylag Holdings (UK) Limited | Monkton | 1978 |
| Greylees Limited | Sleaford | 2001 |
| Greyridge Bloodstock Limited | Salisbury | 2021 |