| J.A.B. Enterprises Limited | Portrush | 1914 |
| J.A.C. Hampton Ltd. | Sutherland | 2003 |
| J.A.Ceilings Ltd | Feltham | 2008 |
| J.A.Godfrey & Sons,Limited | Brigg | 1950 |
| J.A.J. Sawbridge & Sons Limited | Milton Keynes | 1983 |
| J.A.L. (Fishing) Limited | | 2002 |
| J.A.Longhurst Limited | Worthing | 1958 |
| J.A.Needham Limited | King'S Lynn | 1960 |
| J.A.Robarts and J.J.Harding Limited | Herts | 1931 |
| J.A.Taylor (Fordham) Limited | Ely | 1962 |
| J.A.Willis(Northallerton)Limited | Yorkshire | 1960 |
| J.A.Wilson and Sons(Weston)Limited | Letchworth Garden City | 1954 |
| J.And J.Bland Limited | Shrewsbury | 1952 |
| J.Atkinson(East Meon)Limited | Petersfield Hampshire | 1961 |
| J.B Bloodstock Horse Transport Ltd | London | 2024 |
| J.B Countryside Services Ltd | Carlisle | 2017 |
| J.B Shropshire & Sons Limited | Ely | 1998 |
| J.B. Adams & Partners Limited | Stourbridge | 2005 |
| J.B. Adams (Farms) Limited | Market Drayton | 1977 |
| J.B. and J. KAY Limited | Bold Heath Widnes | 1987 |
| J.B. Davis Limited | Radstock | 1997 |
| J.B. Fairley & SON Limited | Frinton-On-Sea | 1997 |
| J.B. Sands Limited | Stafford | 1976 |
| J.B.Cooke Limited | | 1957 |
| J.B.Everatt Limited | Nr Scunthorpe | 1932 |
| J.C. & B. Harvey (Farmers) Limited | Lincoln | 1973 |
| J.C. & F.C. Tripconey Limited | Helston | 2014 |
| J.C. & F.F. Dovey & Sons Ltd | Weymouth | 2002 |
| J.C. & N.C. Ward Limited | Thatcham | 1960 |
| J.C. Lister Farms Limited | York | 1970 |
| J.C. Robinson Limited | Bridlington | 2003 |
| J.C. Thompson (Stoneland Farm) Limited | Tiverton | 1964 |
| J.C. Watts & SON Limited | Oxfordshire | 1962 |
| J.C.Archer Limited | Ashbourne | 1958 |
| J.C.Brown(Stagsden)Limited | Bedford | 1959 |
| J.C.Green & Sons (Coates)Limited | Whittlesey | 1958 |
| J.C.Groundworks Ltd | Manchester | 2021 |
| J.C.J.M. Limited | Nairn | 2007 |
| J.C.M. Glassford (Holdings) Limited | Worksop | 2017 |
| J.C.M.C.B. Limited | Newry | 2013 |
| J.C.Martin (Farms) Limited | March | 1959 |
| J.Chaplin & Son(Swanley)Limited | Sevenoaks | 1960 |
| J.Clifton & Company Limited | Coalville | 1951 |
| J.D. & M. Morgan Limited | Carmarthen | 1984 |
| J.D. and R.J. Baker Farms Limited | Bury St Edmunds | 1991 |
| J.D. COX Farms Limited | Banbury | 1981 |
| J.D. Fulton (Tullylinkesay Mills) Limited | Co. Londonderry | 1982 |
| J.D. Mawby & Sons Limited | Grimsby | 1956 |
| J.D. O’Hare & Sons Limited | Banbridge | 2018 |
| J.D. Ross Limited | Nottinghamshire | 2004 |
| J.D. Rutherford Limited | Cambridge | 1986 |
| J.D. Trunkfield Farms Limited | Ringmer | 1998 |
| J.D.Alston(Estates) | Diss | 1946 |
| J.E. & C.M. Fletcher & Co. Limited | Buxton | 1995 |
| J.E. Archer & Sons (Farmers) Limited | Derby | 1975 |
| J.E. Broadberry & SON Limited | Nottinghamshire | 1982 |
| J.E. Cade and SON Limited | Cambs | 1977 |
| J.E. Cottingham Limited | Driffield | 2010 |
| J.E. Owles Limited | Norfolk | 1958 |
| J.E. Renwick Limited | Sussex | 1964 |
| J.E. Theaker and SON Limited | Barnsley | 2003 |
| J.E. Wakely & Sons Ltd | Taunton | 2013 |
| J.E. Wood & Sons (Farmers) Limited | Oakham | 1967 |
| J.E.G. Farms Limited | Boston | 1984 |
| J.E.Hartley Limited | York | 1954 |
| J.E.J Contracting Limited | Northampton | 2023 |
| J.E.Morris(Farmers)Limited | Lincoln | 1954 |
| J.E.Piccaver & Co. (Gedney Marsh) | Spalding | 1950 |
| J.E.Rosbotham Limited | St.Helens | 1959 |
| J.E.T. Morris & SON Limited | Lugwardine | 1975 |
| J.E.Tabor(Farms)Limited | Braintree | 1955 |
| J.F. Greaves & Sons (Farmers) Limited | Melton Mowbray | 1970 |
| J.F. Haag & Sons (Pork) Limited | Ipswich | 1963 |
| J.F.D.Hargreaves Limited | Ulceby | 1944 |
| J.F.Temple & SON Limited | Norfolk | 1956 |
| J.G. Bellerby (Farms) Limited | Harrogate | 1997 |
| J.G. Fisher Limited | Grimsby | 1955 |
| J.G. Goring (Potatoes) Limited | Hereford | 1981 |
| J.G. Goring Limited | Hereford | 1975 |
| J.G. Hare (Farming) Limited | Seaham | 2016 |
| J.G. Porter Contractors Limited | Forfar | 2014 |
| J.G. Porter Farms Limited | Angus | 1984 |
| J.G.Dring & SON Limited | Market Rasen | 1955 |
| J.G.E. Limited | Cambridge | 1997 |
| J.G.Gilder Limited | Cheltenham | 2018 |
| J.G.Litherland(Rhubarb) | Spalding | 1961 |
| J.G.Swiers(Helperby)Limited | Stillington | 1961 |
| J.H LEE Ltd | Cromer | 2015 |
| J.H. and P.E. Nicholson Limited | Norwich | 1958 |
| J.H. Bacon Limited | Grimsby | 1974 |
| J.H. Casswell and SON Limited | Nr Sleaford | 1982 |
| J.H. Consultancy Ltd | Luton | 2017 |
| J.H. Grundy (Farms) Limited | Spalding | 1954 |
| J.H. Heath Limited | Louth | 1955 |
| J.H. Hutchinson & SON Limited | Whitby | 2006 |
| J.H. Marshall (Thornbury) Limited | Chipping Sodbury | 1965 |
| J.H. Mccloy & Co Limited | Knottingley | 1987 |
| J.H. Mckee Limited | Newry | 1947 |
| J.H. Mewburn Limited | Brandesburton | 1981 |
| J.H.& F.W.Green Limited | Chichester | 1917 |