| Robotic Agriculture Ltd | Preston | 2019 |
| Robson Golding Limited | Dunfermline | 2021 |
| Robson Livestock Ltd | Galashiels | 2024 |
| Robson Urwin & Co. Limited | Berwick-Upon-Tweed | 1973 |
| Robur (SW) Limited | Tiverton | 2012 |
| Robustworks Ltd | Tavistock | 2021 |
| Robyn Gray Equestrian Limited | Carlisle | 2023 |
| Robynwood Companies Ltd. | Burnley | 2025 |
| Roca Alta Limited | Salisbury | 2020 |
| Roca International Limited | Lancashire | 2002 |
| Roccos Doggy Daycare Ltd | London | 2022 |
| Rocen Homesteady Ltd | Cardiff | 2026 |
| Rochelles German Shepherds Ltd | Kilmarnock | 2020 |
| Rochester Farm Contracts Limited | Downham Market | 2010 |
| Rochester Farm Limited | Downham Market | 1959 |
| Rochfords Tree Services Limited | Basildon | 2020 |
| Rocis Bloodstock Limited | Ilford | 2025 |
| Rock Farms Limited | Alnwick | 1957 |
| Rock of Ages Conglomerates UK Ltd | Bedford | 2022 |
| Rock Solid Construction (Midlands) Ltd | Hinckley | 2020 |
| Rockabill NI Limited | Belfast | 2013 |
| Rockbroon Limited | Colchester | 2023 |
| Rockdale Field Management Company Limited | Plymouth | 2004 |
| Rockerdar Canine Ltd | Belper | 2023 |
| Rocket Gardens Limited | Helston | 2006 |
| Rocket III Computing Limited | Stockbury | 1994 |
| Rocket Pasta Ltd | Liverpool | 2025 |
| Rockfield Farming Limited | Newry | 2018 |
| Rockfield Farms Limited | Chippenham | 1997 |
| Rockingham Forest Park Limited | Chorleywood | 2001 |
| Rockinghams Farms Limited | Colchester | 1980 |
| Rockleigh Limited | Oundle | 2016 |
| Rockley Manor Stables Limited | Marlborough | 2022 |
| Rockmount Farms Ltd | Newtownards | 2016 |
| Rockon Livery Services Limited | Rochester | 2019 |
| Rocks Lodge Trout Farm Limited | Co Tyrone | 1980 |
| Rocks Woodlands Limited | Haywards Heath | 2022 |
| Rockscape Contract Services Limited | Crowle | 2008 |
| Rockscape Farms Ltd | Scunthorpe | 1997 |
| Rockside Farming Co Limited | Isle Of Islay | 1997 |
| Rocksource Group Ltd | London | 2025 |
| Rockstead Farms Limited | Poole | 2021 |
| Rockstone Technologies Ltd | Dawlish Warren | 2007 |
| Rockstown Farm Ltd | Ballymena | 2026 |
| Rockwood Equestrian Limited | Caerphilly | 2022 |
| Rocky Mountain Horse UK Limited | Wickford | 2013 |
| Rockylodge Dogs Ltd | Pontefract | 2023 |
| Rocname Ltd | Wick | 2026 |
| ROD Heathfield (Horse Ambulances) Limited | Ledbury | 2015 |
| ROD Millman Racing Limited | Tiverton | 2002 |
| ROD Tidwell Bloodstock Ltd | Cheltenham | 2022 |
| Rodden Farm Enterprise Ltd | Weymouth | 2024 |
| Roddy Farm's Ltd | Omagh | 2010 |
| Roddy Williams Limited | High Wycombe | 2000 |
| Roden Poultry Limited | Telford | 2019 |
| Roden Renewables Limited | Shrewsbury | 2016 |
| Roden Sport Horses Ltd | Bolton | 2022 |
| Rodenhurst Hall Ltd | Telford | 2019 |
| Rodent & Roach Environmentals Ltd | Croydon | 2020 |
| Roderick Maclennan Contractor Ltd | Dornoch | 2026 |
| Roderick Wilson Tree Surgery Limited | Hemel Hempstead | 2016 |
| Rodger Farms Ltd | Earlston | 2018 |
| Roding Valley Farming Limited | Dunmow | 2005 |
| Rodington Vineyard Ltd | Telford | 2014 |
| Rodmore Farm Limited | Wells | 2017 |
| Rodney Mylius Limited | London | 2007 |
| Rodney Reid Fishing Ltd | Whalsay | 2011 |
| Rodridge Farm Livery Ltd | Wingate | 2024 |
| ROE Clare Limited | Cheshire | 2003 |
| ROE Valley Ancestral Researchers Ltd | Limavady | 2019 |
| Roebuck Horticultural Limited | Durham | 2020 |
| Roel Hill Farm Limited | London | 2016 |
| Rofelo Forestry Limited | Coventry | 2016 |
| Rogam Farms Ltd | Wincanton | 1998 |
| Roger Bitmead (Cholsey) Limited | Winchester | 1972 |
| Roger Dakin & Sons Limited | Skipton | 2017 |
| Roger Davis Independent Agronomy Limited | Peterborough | 2003 |
| Roger Evans Limited | Wolverhampton | 2001 |
| Roger Fletcher Farms Limited | Martin | 2011 |
| Roger Gill Limited | Malvern | 1997 |
| Roger Hart Farms Limited | Royston | 1976 |
| Roger Keen Farms Limited | Wiltshire | 1970 |
| Roger LEA Limited | Coventry | 2020 |
| Roger Madsen Limited | East Yorkshire | 2003 |
| Roger Middleton Ltd | Whitchurch | 2012 |
| Roger Trethewy Limited | Truro | 2016 |
| Rogermoor Farm Limited | Dumfriesshire | 1991 |
| Rogers Farm Ltd | Norwich | 1990 |
| Rogers Farm Poultry Ltd | Hereford | 2020 |
| Rogers Poultry Services Limited | Trowbridge | 2017 |
| Rogerson Agri-Trade Ltd | Newark | 2020 |
| Rogeston Farm Ltd | Haverfordwest | 2009 |
| Rokaid Agro Products Limited | Rochester | 2020 |
| Roke Farm Limited | Dorchester | 1964 |
| Rokewood Limited | Exeter | 2002 |
| ROL Limited | Morpeth | 2002 |
| Roland Forestry (UK) Ltd | Edinburgh | 2011 |
| Roland Kelly Limited | Hastings | 2014 |
| Rolawn (Turf Growers) Limited | Aberdeen | 1975 |
| Rolawn Limited | York | 2002 |