| R.J.Technical Engineering Limited | Golspie | 1992 |
| R.K. Drury & Sons Limited | York | 1964 |
| R.L & J.M Harding Limited | Nr Wimborne | 1955 |
| R.L.Farmer Limited | Hatfield, | 1964 |
| R.M. Bostock Limited | Chilcote Swadlincote | 1998 |
| R.M. Brabbs Limited | York | 1956 |
| R.M. Cottingham Limited | Binbrook | 1955 |
| R.M. Farms Limited | Preston | 2023 |
| R.M. Martin Limited | Stirling | 2023 |
| R.M. Winscom Limited | Petersfield | 1947 |
| R.M.Addy & Sons Limited | Frognall | 1940 |
| R.M.Eglin & SON Limited | Bulkington | 1964 |
| R.M.S. Livestock Limited | Leyburn | 1979 |
| R.N. Padfield & Sons Limited | Gloucester | 1958 |
| R.N.Willmer(Farms)Limited | Oxon | 1950 |
| R.Needham & Sons(Ryelands)Limited | Chilton | 1958 |
| R.O.S.A.S.T Ltd | Romsey | 2019 |
| R.P and M. Lindsey Limited | Effingham Junction | 2002 |
| R.P. Collier Farms Limited | | 1996 |
| R.P. Sainsbury & Sons Limited | Glos | 1960 |
| R.P. Watts (Baston FEN) Limited | Lincolnshire | 1992 |
| R.P. Woodford Limited | Rugby | 1958 |
| R.P.B. Pressen Hill Ltd. | Kelso | 1997 |
| R.P.D. Scotland Limited | Inverurie | 1985 |
| R.P.G. Herbs Limited | Congleton | 1997 |
| R.P.Worth & Son,Limited | Spalding | 1952 |
| R.Parsons Limited | Lincoln | 1958 |
| R.Partridge & Son.Limited | Colchester | 1949 |
| R.R. Mackay & Company Limited | Thurso | 1960 |
| R.R. Tweedie & Company Limited | Gordon | 1959 |
| R.R.K. Limited | Hitchin | 1978 |
| R.Robinson(Snipe House)Limited | Berwick-Upon-Tweed | 1958 |
| R.S. Burton Limited | Diss | 2002 |
| R.S. Croft (Farmers) Limited | Beverley | 2000 |
| R.S. Forestry Limited | Huddersfield | 2005 |
| R.S. Fowkes Limited | Lincoln | 1956 |
| R.S.Cockerill(Farms)Limited | York | 1963 |
| R.S.D Gardening Services Limited | Hereford | 1997 |
| R.S.M. Milne (Dykelands) Limited | Kincardineshire | 1954 |
| R.Santos Limited | Notts | 1969 |
| R.Swindell & Sons Limited | Hognaston Ashbourne | 2002 |
| R.T. Bebb Limited | Nr. Bridgnorth, | 1963 |
| R.T. Bransby (Farms) Limited | Wrexham | 1988 |
| R.T. Nelson and SON Limited | Beccles | 1985 |
| R.T. Williams & SON Limited | Ottringham | 2018 |
| R.T.Fitton & Company Limited | Nr Chester | 1958 |
| R.Tile Limited | Berwick-Upon-Tweed | 1961 |
| R.Turnock Limited | Staffordshire | 1958 |
| R.V.G. Agricultural Labour Limited | Wisbech | 2000 |
| R.V.Roger Limited | Pickering | 1961 |
| R.V.S. Distribution (UK) Limited | Roslea | 2021 |
| R.W Agricultural Services Ltd | Kidderminster | 2020 |
| R.W.Beaty(Farms)Limited | Wellingborough | 1971 |
| R.W.Crago & Sons Limited | Halstead Essex | 1972 |
| R.W.Franklin & SON Limited | Cambridgeshire | 1955 |
| R.W.Hill(Farms)Limited | Thetford | 1957 |
| R.W.Hobbs (Kelmscott) Limited | Taunton | 1956 |
| R.W.Kidner (Farms) Limited | Poringland Norwich | 1962 |
| R.W.Reeves Ltd | Bristol | 2016 |
| R.W.W.Pantall Limited | Brecon | 1959 |
| R.W.Walpole Limited | Kings Lynn | 1981 |
| R2 Consulting and Contracting Ltd | Chippenham | 2020 |
| RA & BA Ridley & SON Limited | Hexham | 2017 |
| RA & HM Roberts Limited | Whitchurch | 2009 |
| RA & JA Reed & Sons Limited | Seaton | 2025 |
| RA Atkinson Limited | Bridlington | 1997 |
| RA Craft Ltd | Wolverhampton | 2026 |
| RA Engineering (Marine) Ltd | Avoch | 2023 |
| RA Fisheries Limited | Warrington | 2021 |
| RA Stephens Limited | Nr Coventry | 2003 |
| Rabaiotti Limited | Haverfordwest | 2003 |
| Rabbah Bloodstock Limited | Newmarket | 1981 |
| Rabbit Hole Places Limited | Truro | 2017 |
| Raby Farming Company Limited | Huntingdon | 2011 |
| RAC Contractors Limited | Melton Mowbray | 2000 |
| RAC Farm Partners Limited | Yeovil | 2012 |
| Racecourse Apiaries Limited | Bristol | 2023 |
| Racedown Alps Limited | Aylesbury | 1973 |
| Racehorse Farriery Limited | Bath | 2012 |
| Rachel Archer Limited | Winchester | 2002 |
| Rachel Latchford Dipwcf Equine Services Limited | Mauchline | 2025 |
| Rachel Murray Ltd | Tain | 2020 |
| Rachel Wallis Farming Limited | Abingdon | 2017 |
| Racine Systems Ltd | Pencader | 2020 |
| Racka (Zackel) Sheep Society Ltd | Taunton | 2021 |
| Radar Farm Ltd | Worthing | 2024 |
| Radbourne Farms Limited | Dunmow, | 1963 |
| Raddery House Limited | Fortrose | 2022 |
| Raddery Sawmill Limited | Inverness | 2005 |
| Raddon Court Limited | Salisbury | 1991 |
| Radfield Limited | Sittingbourne | 1946 |
| Radford Mill Ltd | Bristol | 2022 |
| Radford's Farm Limited | Alfreton | 2019 |
| Radfords Poultry Ltd | Oswestry | 2016 |
| Radiance Fishing Company Ltd | Lerwick | 2019 |
| Radiant Export and Import Company Ltd | London | 2021 |
| Radiant Fishing Services Ltd | Fraserburgh | 2019 |
| Radiant FR10 Limited | Fraserburgh | 2017 |
| Radiant Star Fishing Company Limited | Lerwick | 2014 |
| Radley Green Farm Limited | Ingatestone | 2006 |