| G.A.Turnbull Limited | Northallerton | 2014 |
| G.A.W.Ferguson & Co | Moray | 1983 |
| G.Abel and Sons Limited | Tavistock | 1962 |
| G.B. Agricultural Contractors Limited | Boston | 2007 |
| G.B. Edmonson Limited | Dereham | 1978 |
| G.B. Foot Limited | Tadley | 1960 |
| G.B. Land Management Ltd. | Troon | 2005 |
| G.B. Pattullo & Sons Limited | Arbroath | 1953 |
| G.B.I. Farms Limited | Leighton Buzzard | 1988 |
| G.B.Services Brixham Ltd | Brixham | 2021 |
| G.B.Turnbull Limited | Skellow | 1958 |
| G.C. Forman Family Farms Ltd | Grantham | 2015 |
| G.C. Gordon Lennox Estate Company Ltd. (the) | Morayshire | 1962 |
| G.C. Mowbray Limited | Spalding | 1954 |
| G.C. Taylor (Farms) Limited | Errol | 1951 |
| G.C.& A.D.Cullen,Limited | Nr. Worcester, | 1948 |
| G.C.& J.C.Wilkerson Limited | Royston | 1956 |
| G.C.L. Stephenson Limited | Carlisle | 1999 |
| G.D. Stephenson and Sons Limited | York | 1982 |
| G.D.Bach Limited | Ludlow | 1958 |
| G.D.Woolcock Limited | Oxon | 1956 |
| G.E Saunders Forestry Contractors Ltd | Rye | 2006 |
| G.E. & B. Fearn Farms Limited | Newark | 1983 |
| G.E. & G.E. Fisher Limited | March | 1979 |
| G.E. & G.W. Stennett Limited | Ipswich | 1947 |
| G.E. Green Limited | Peterborough | 1949 |
| G.E. Porter & Sons Limited | Lincoln | 1996 |
| G.E. Symms & SON Limited | Sherborne | 2008 |
| G.E.& A.Grey Limited | Derbyshire | 1963 |
| G.E.Overton(Farms)Limited | Lincoln | 1961 |
| G.F. Cole and SON Limited | Diss | 1987 |
| G.F. Farquhar (Estates) Limited | Aberdeen | 1999 |
| G.F. Farquhar (Farms) Limited | Aberdeen | 2003 |
| G.F. Roberts (Farms) Limited | Wolverhampton | 1953 |
| G.F.E Eggs Ltd | Glasgow | 2025 |
| G.Goodhew(Kent)Limited | Sittingbourne | 1941 |
| G.H. (Whitsbury) Limited | Hampshire | 1950 |
| G.H. and V.E. Davies and SON Limited | Shropshire | 1993 |
| G.H. Bradshaw & Sons Limited | Whitchurch | 1968 |
| G.H. Caudwell Limited | Nr Boston | 1956 |
| G.H. Chennells (Farms) Limited | Lincoln | 1976 |
| G.H. Dean & Co. Limited | Sittingbourne | 1947 |
| G.H. Dean (1920) Limited | Sittingbourne | 1920 |
| G.H. Parker (North Cotes) Limited | Skegness | 1953 |
| G.H. Richards (Chilbridge Farm) Limited | Dorset | 1954 |
| G.H. Sutton Limited | Newark | 1955 |
| G.H.Allen(Farms)Limited | Hempnall | 1955 |
| G.H.C (Management) Limited | Parkmill | 1978 |
| G.H.Hoyles,Limited | Spalding | 1954 |
| G.H.Kirke Limited | Grimsby | 1965 |
| G.H.Myers Limited | Spalding | 1964 |
| G.H.Styles Limited | Bewdley | 1951 |
| G.H.Walton & SON Limited | Shipston On Stour | 1959 |
| G.I. Young & Company Limited | Ayrshire | 1926 |
| G.J.C. Anderson & Co. Limited | Laurencekirk | 1963 |
| G.L. & E.J. Fisher Limited | York | 1972 |
| G.L. Morgan Ltd | Hereford | 2009 |
| G.L. Taylor Limited | Preston | 1960 |
| G.L.P. Evans Limited | Carmarthen | 2002 |
| G.M. Pierson Groundworks and Agricultural Services Limited | York | 2007 |
| G.M. Sharma Foundation Limited | London | 2021 |
| G.M.Day and Sons Limited | Near Tonbridge | 1953 |
| G.M.Hunter Limited | Hunts | 1957 |
| G.N Forestry Ltd | Dumfries | 2026 |
| G.N.F. Forestry Ltd | Norfolk | 2007 |
| G.O. Morley & Company Limited | Driffield | 1956 |
| G.O.C. International Limited | Brigg | 2006 |
| G.P. Gill Limited | Shipley | 1994 |
| G.P. Tratt Limited | Weston -Super - Mare | 1964 |
| G.P.Feeds Limited | Whitchurch | 1999 |
| G.P.S. Heart of Racing (Bloodstock) Limited | Lincoln | 2018 |
| G.Pell & SON Limited | Wilden | 1964 |
| G.R Needham Limited | Stourbridge | 1981 |
| G.R. & D. Herbert Limited | County Durham | 1978 |
| G.R. Davies & Family Limited | Haverfordwest | 2003 |
| G.R. Hallifield Farmers Limited | Derby | 1978 |
| G.R. Oxtoby and Sons Limited | York | 1976 |
| G.R. Phillips & SON Limited | Uttoxeter | 1955 |
| G.R. Robinson (Farms) Limited | Billesdon | 1965 |
| G.R. Smith (Thriplow) Limited | Saffron Walden | 1955 |
| G.R.Beeby & SON Limited | Gainsborough | 1950 |
| G.R.G. Todd Ltd | Berwick Upon Tweed | 2011 |
| G.R.Ward & Co. | Grantham | 1958 |
| G.S. Chatterton (Shelford) Limited | Nottingham | 1979 |
| G.S. Shropshire & Sons Limited | Ely | 1958 |
| G.S. White & SON (Farms) Limited | Chelmsford | 1969 |
| G.S.Grantham Limited | Lincoln | 1959 |
| G.S.T. Limited | Braintree | 1997 |
| G.Staveley Parker and Sons Limited | Banbury | 1963 |
| G.T. & a. Ireland Limited | Dorchester | 1965 |
| G.T. Bray Farms Limited | Taunton | 1976 |
| G.T. Jones Contracting Limited | Cardiff | 2003 |
| G.T. Woodlands Limited | Verwood | 1996 |
| G.T.Pryce (Farms) Limited | Birmingham | 1996 |
| G.T.Ripley,Limited | York | 1947 |
| G.V.Prestwood & Sons Limited | Stone | 1941 |
| G.W Haimes and SON Limited | Solihull | 2022 |
| G.W. Cooper (Farms) Limited | Chelmsford | 1966 |
| G.W. Crown (Ringstead) Limited | Hunstanton | 1956 |
| G.W. Daniels and SON Limited | | 1946 |