| Romanelli's Italian Food LtdMilton Keynes, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2015 |
| Ronly Group LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2007 |
| Room To Read LtdLondon, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Rosarubra UK LimitedChelmsford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| Rosato LtdPreston, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2010 |
| Rosemont Cafe' LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2013 |
| Rossi International LtdBournemouth, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2006 |
| Rosso Bianco Wines LtdWoking, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2015 |
| Rothenberger LtdKettering, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1971 |
| Rothschild Waddesdon LimitedWaddesdon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1990 |
| Rouge & Co. London Ltd.London, United Kingdom · UKrouge-london.co.uk · checked 28 Oct 2026 | UK | 0 | – | – | –Mid (producers) | 4% | 2024 |
| Rougevin LimitedHenley-on-Thames, United Kingdom · UKrougevin.wine · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2022 |
| Roux Waterside Inn LtdBray, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1984 |
| Rowines LtdUnited Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Royal Mail Group LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2001 |
| Royal Thames Yacht Club LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2003 |
| Royal Tokaji Boraszati Kft Limited CompanyUnited Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Royal Yacht Enterprises LimitedEdinburgh, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1998 |
| Royle Forest Weddings LimitedBurton-on-Trent, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Rsi.sw LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2021 |
| Rubelli LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1957 |
| Rubicer Scotland LimitedFraserburgh, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2013 |
| Rubix Industrial Services LimitedOldbury, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1995 |
| Rude Wines LimitedLedbury, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Rules Restaurant LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1997 |
| Russell Distillers LtdMansfield Park, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2013 |
| Russell Mellor and Company LtdBromley, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Russell Smith F & B LimitedAylesford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Rusticodeli LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2024 |
| Ruta 40 LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2010 |
| Rw Commerce LimitedLondon, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Rwm Holdings LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| Rycote Services LtdThame, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2012 |
| Ryder Cup Europe LLPSurrey, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2004 |
| S & B Distribution LtdEnfield, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2010 |
| S & B Impex LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2018 |
| S Aspris & Son LimitedCroydon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1979 |
| S M Contracts LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2003 |
| S. K. Y. Enterprise UK LtdMorden, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| S2&S International Services LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| S2ab LtdNewton Abbot, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2018 |
| SA Wines Online LtdLondon, United Kingdom · UKsawinesonline.co.uk · checked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Sacla UK LtdBeaconsfield, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1991 |
| Sacred River LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1999 |
| Sad Meli Winery LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Saf LtdNormandy, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1993 |
| Safe Cellars LimitedOldham, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Safestore LtdBorehamwood, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2005 |
| Safeway Distribution LimitedBarking, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2014 |
| Sagardi UK LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2014 |