| Radnidge Farm Limited | Tiverton | 1965 |
| Radnik Kennels Ltd | Derby | 2025 |
| Radstone Estate Limited | Brackley | 2004 |
| Radu Tandarescu Consultancy Ltd | Gravesend | 2023 |
| Radwood Hall Farm Limited | Newcastle Under Lyme | 2010 |
| RAE of Hope Fishing Ltd | Poundbury | 2010 |
| Raehills Farms Limited | Lockerbie | 1997 |
| Raeside Farms Limited | Kilmarnock | 2014 |
| Rafalukpl Ltd | Pontefract | 2022 |
| Rafferty Poultry Ltd | Co Tyrone | 2009 |
| Raft Solutions Limited | Ripon | 2010 |
| Raglan Agricultural Services Limited | Usk | 1997 |
| Ragley Estate Limited | Alcester | 2020 |
| Ragley Farms Limited | Alcester | 2020 |
| Ragley Woodlands Limited | Alcester | 2020 |
| Ragley Woods Limited | Alcester | 2020 |
| Raglington Farm Limited | Southampton | 1950 |
| Rags & Bert’S (Hemel) Limited | Reading | 2026 |
| Ragt Seeds Limited | Saffron Walden | 2004 |
| Ragw CYF | Porthmadog | 2025 |
| Ragwort-Uk Limited | Norfolk | 2002 |
| Raich Ltd | Nuneaton | 2016 |
| Raider Fisheries Ltd | Paignton | 2022 |
| Railway View Farm Ltd | Cookstown | 2012 |
| Rain Fresh Ltd | Redditch | 2018 |
| Rain Rescue | Doncaster | 2006 |
| Rainbird & Sons Ltd | Exeter | 2026 |
| Rainbow a Limited | Dorking | 2009 |
| Rainbow Construction Limited | Haslingden | 2013 |
| Rainbow Horses Learning Centre CIC | Nottingham | 2011 |
| Rainbow Plants Ltd | Ottery St Mary | 2015 |
| Raincliffe Wood Community Enterprise C.I.C. | Scarborough | 2013 |
| Rainfen Gundogs Limited | Brough | 2021 |
| Rainford's Farm Ltd | St. Helens | 2024 |
| Rainfords (Longridge) Limited | London | 2002 |
| Rainfords Christmas Trees Ltd | Manchester | 2011 |
| Rainforest Builder Ltd | London | 2022 |
| Rainforest Enterprise Ltd | London | 2023 |
| Rainforest Parrots Limited | Northampton | 2021 |
| Raingear Irrigation Limited | Swaffham | 2003 |
| Rainhall Livestock Limited | Blackpool | 2026 |
| Rainham Chihuahua & Griffon Ltd | Lytham St. Annes | 2025 |
| Rainheath Limited | York | 1970 |
| Rainnieston Ltd. | Thainstone | 1996 |
| Rainwood Limited | Cullompton | 2017 |
| Raised With Nature Ltd | Skipton | 2025 |
| Rajani Rail Solutions Ltd | Harrow | 2010 |
| Rajm Farm Limited | Collone | 2012 |
| Raker Pest Control Supplies Limited | Petworth | 2015 |
| RAL Enterprises Limited | Peterhead | 2013 |
| Raleagh Equine Rescue Limited | Downpatrick | 2001 |
| RALLY4WALES Contracts Ltd | Oswestry | 2017 |
| Raloo Fishery & Livery Ltd | Lisburn | 2017 |
| Ralph Day Limited | Gainsborough | 1977 |
| Ralph Farming Limited | Newton | 2025 |
| Ralph Harrison & Company Limited | Wells-Next-The-Sea | 1958 |
| Ralph Pocklington Limited | Boston | 1949 |
| Ralstonyards Livery Ltd | Kilmarnock | 2022 |
| Ramaley Farm Ltd | Fivemiletown | 2018 |
| Ramco Investments Ltd | Glasgow | 2015 |
| Ramgen Ltd | Keady | 2011 |
| Ramjak Limited | Nottingham | 2017 |
| Rammed Roots Limited | Newport | 2025 |
| Ramnaberg Fishing Co Ltd | Shetland | 2011 |
| Ramornie Agriculture Ltd | Rickmansworth | 2025 |
| Ramp Bloodstock Ltd | London | 2020 |
| Rampisham Manor Farms Limited | Dorchester | 1974 |
| Ramply Farming Limited | Huntingdon | 2013 |
| Rampton Cultivations Limited | Huntingdon | 1949 |
| Ramsay Farms Limited | Arbroath | 1955 |
| Ramsbury Estates Limited | Marlborough | 1997 |
| Ramsclough Farm Limited | Accrington | 1978 |
| Ramsham Farm Ltd | Tavistock | 2020 |
| Ramshope Farm Ltd | Newcastle Upon Tyne | 2007 |
| Ramstane Farm Limited | Kilmaurs | 2019 |
| Ramster Estate Limited | Godalming | 1934 |
| Ramswood Nurseries Limited | Warrington | 2016 |
| Rana Group of Town Limited | London | 2025 |
| Ranches Limited | Okehampton | 1957 |
| Rancho Temescal Bloodstock Limited | Newmarket | 2025 |
| Rand Contracting (UK) Ltd | Witney | 2014 |
| Rand Contracting Limited | Royston | 2010 |
| Randal J Mathers Limited | Turriff | 2017 |
| Randal Livingstone Limited | Caledon | 2013 |
| Randall Farms Limited | Nr Maidenhead | 1981 |
| Randall's ARB Ltd | Ruthin | 2023 |
| Randalls Farm Ltd | Southsea | 2024 |
| Random Performance Limited | London | 2007 |
| Random Plank Ltd | Stoke-On-Trent | 2025 |
| Randox Land Limited | Crumlin | 2012 |
| Rands Farm Equestrian Centre Ltd | Finningley | 2019 |
| Ranfurly Ranch Limited | Livingston | 2024 |
| Range Farm Limited | Cannock | 2016 |
| Rankeilour Farms Limited | Cupar | 2015 |
| Rankin Brothers Estates Limited | Edinburgh | 1944 |
| Rankin Farm Eggs Limited | Ballymoney | 2018 |
| Rankin Farms Limited | Rochford | 1994 |
| Rannoch Ecology Limited | London | 2026 |
| Ranskill Farms Limited | Retford | 2000 |
| Ransley Bloodstock Limited | Ashford | 2016 |