| Reserve LimitedManchester, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2003 |
| Restaurants 360 Degrees LtdBishop's Stortford, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2024 |
| Retail In Motion LtdUnited Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Reuters News & Media LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1990 |
| Revolution Wines LtdBanbury, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2011 |
| Rhi Transport LtdNorthwich, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2018 |
| Rhino Wines LtdCoventry, United Kingdom · UKrhinowines.co.uk · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2024 |
| Rhone Group LLPLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2006 |
| Rhubarb Food Design LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1998 |
| Rhytik Leisure LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Richard Banks and Co LtdBath, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2010 |
| Richard Dawes Fine Wine LtdShrewsbury, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2007 |
| Richard Harvey Wines LimitedCheselbourne, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1997 |
| Richard Kihl LimitedSuffolk, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1972 |
| Richard Mille Europe, Middle East and Af Rica LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2007 |
| Richemont Holdings LimitedUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1993 |
| Richemont UK LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1997 |
| Richluigi LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2024 |
| Richmond Street Productions UK LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2022 |
| Riello Ups LtdWrexham, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2002 |
| Right Formula LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| Riley Scooters LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2020 |
| Rinpoche LtdLiverpool, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Ripley Wines LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2000 |
| Rise and Vine LtdLondon, United Kingdom · UKriseandvine.co.uk · checked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Ritz Hotel LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1899 |
| Riva South LimitedEastleigh, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1989 |
| Rivage Vin LimitedRugby, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2026 |
| Riverford Organic Farmers LimitedBuckfastleigh, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1999 |
| Rjwwa LimitedHigh Peak, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2025 |
| Road and Race Automotive LtdDereham, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2019 |
| Robb Brothers Wine Merchants LtdBelfast, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2014 |
| Robert Guy Services LtdLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1971 |
| Robert Kukla Spedition UK LtdMountnessing, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Robert Rolls & Co LimitedLondon, United Kingdom · UKrobertrolls.com · checked 28 Oct 2026 | UK | 0 | – | – | –Premium (producers) | 20% | 1982 |
| Roberts & Speight LimitedHull, United Kingdom · UKrobertsandspeight.co.uk · checked 1 Nov 2026 | UK | 0 | – | – | –Premium (producers) | 14% | 2007 |
| Robin Birley Holdings LimitedLondon, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| Robin's Nest Wines LimitedBrighton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2018 |
| Robt Roberts LtdLisburn, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Rocca Mora LtdUnited Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2009 |
| Rochem Fyrewash LtdWinchester, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 1983 |
| Rocket Food LtdBirmingham, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2000 |
| Rodica Wine and Spirits LimitedCardiff, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2017 |
| Rodney Fletcher Vintners LimitedGodalming, United Kingdom · UKrfvintners.co.uk · checked 1 Nov 2026 | UK | 0 | – | – | –Premium (producers) | 13% | 2010 |
| Roexport LtdWembley, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2003 |
| Rok Drinks LimitedAlbrighton, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2012 |
| Roka Wine Company LimitedLeighton Buzzard, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |
| Roland Dg LtdBristol, United Kingdom · UKchecked 28 Oct 2026 | UK | 0 | – | – | – | – | 2001 |
| Roland Wines LtdLondon, United Kingdom · UKrolandwines.co.uk · checked 1 Nov 2026 | UK | 0 | – | – | –Premium (producers) | 19% | 2017 |
| Rolls-Royce Motor Car LtdBracknell, United Kingdom · UKchecked 26 Oct 2026 | UK | 0 | – | – | – | – | – |