| Roganmusicfilm Ltd | Information & communication | 2025 |
| Roger Walker Travel Limited | Professional & scientific | 1987 |
| Rogue Gentlemen Ltd | Wholesale & retail | 2014 |
| Rogue Management Limited | Professional & scientific | 2025 |
| Rogue Sun Ltd | Information & communication | 2016 |
| Rojda & Cemile Limited | Hospitality | 2019 |
| Rolfeston Ltd | Information & communication | 2015 |
| Rollo Apparel Ltd | Manufacturing | 2026 |
| Romade Limited | Financial services | 2014 |
| Roman Fleet Ltd | Transport & logistics | 2019 |
| Roman Freeholds Limited | Households | 2003 |
| Roman Larch Ltd | Wholesale & retail | 2020 |
| Romeros POP UPS Limited | Wholesale & retail | 2020 |
| Romford Domi Audiology Specsavers Limited | Wholesale & retail | 2025 |
| Romford Specsavers Hearcare Limited | Wholesale & retail | 2007 |
| Romsey Avenue Management Limited | Households | 2023 |
| Romsey Specsavers Limited | Wholesale & retail | 2014 |
| RON Upfield Limited | Wholesale & retail | 2006 |
| Roof Build Renovate Limited | Construction | 2017 |
| Roofing and Insulation Ltd | Construction | 2026 |
| Roohaz Limited | Health & social care | 2007 |
| Rookery Avenue Management Company Limited | Households | 2023 |
| Rookstone Properties Ltd | Households | 2022 |
| Rooster Sailing Limited | Wholesale & retail | 2000 |
| Rosablanche LLP | | 2020 |
| Rose BEE Limited | Real estate | 2025 |
| Rose Quartz Studio Ltd | Other services | 2026 |
| Rose Villa Assets Ltd | Real estate | 2026 |
| Rose Villa Consultancy Ltd. | Professional & scientific | 2024 |
| Rosehill Bodyshop Ltd | Wholesale & retail | 2019 |
| Roselandia LLP | | 2011 |
| Rosemark Living Ltd | Real estate | 2026 |
| Ross Williams Watersports Limited | Arts & recreation | 2012 |
| Rosscopp Logistics Limited | Transport & logistics | 2019 |
| Rotherham Specsavers Limited | Wholesale & retail | 1992 |
| Rotherham Visionplus Limited | Wholesale & retail | 1992 |
| Rothwell Specsavers Hearcare Limited | Wholesale & retail | 2016 |
| Rothwell Specsavers Limited | Wholesale & retail | 2008 |
| Rothwell Visionplus Limited | Wholesale & retail | 2008 |
| Route DCA Limited | Information & communication | 2020 |
| Rovers Fishing Tackle Ltd | Wholesale & retail | 2023 |
| ROW Trading Limited | Real estate | 2023 |
| Rowland Road Holdings Ltd | Real estate | 2023 |
| Rowner Residents Company Limited | Households | 2001 |
| Roxburg Cleaning Specialists Limited | Administrative & support | 2020 |
| Roy's Limited | Wholesale & retail | 2000 |
| Royal National Mission to Deep Sea Fishermen(The) | Health & social care | 1887 |
| Royale 4 Limited | Financial services | 2021 |
| Royale Group Acquisitions Limited | Hospitality | 2021 |
| Royale Group Management Company Limited | Professional & scientific | 2018 |
| Royale Group Opco Limited | Hospitality | 2018 |
| Royale Holdings Group Holdco Limited | Financial services | 2021 |
| Royale Living Limited | Real estate | 2016 |
| Royale Property 10 Limited | Hospitality | 2019 |
| Royston Specsavers Limited | Wholesale & retail | 2019 |
| Roysway Precision Grinding Limited | Manufacturing | 2002 |
| Royton Specsavers Limited | Wholesale & retail | 2008 |
| Royton Visionplus Limited | Wholesale & retail | 2008 |
| Roy’S Homes Limited | Real estate | 2023 |
| RPD Group Limited | Wholesale & retail | 2020 |
| Rpfr Processing Ltd | Wholesale & retail | 2025 |
| RPM Cooling Solutions Ltd | Construction | 2023 |
| RRM Services Ltd | Other services | 2016 |
| Rrmw Ltd | Real estate | 2016 |
| RS Computing Solutions Limited | Professional & scientific | 2019 |
| RS Tech Consulting Ltd | Professional & scientific | 2024 |
| RS Telecomms Ltd | Professional & scientific | 2021 |
| RS Utilities Ltd | Construction | 2024 |
| Rscm Holdings Limited | Financial services | 2025 |
| Rsgbt Ltd | Other services | 2025 |
| RSL Plumbing Services Limited | Construction | 2023 |
| Rspca Solent Branch Trading Company Ltd | Other services | 2022 |
| RTS Partnership Ltd | Transport & logistics | 2015 |
| Rubbish Clearance and Waste Removal Ltd | Water & waste | 2015 |
| Rubicon Property Developments Ltd | Construction | 2022 |
| Rubitan Ltd | Transport & logistics | 2025 |
| Ruby Griffiths Fitness Limited | Professional & scientific | 2025 |
| Ruby's Kitchen 29 Ltd | Hospitality | 2024 |
| Rude Coffee & Wine Ltd | Wholesale & retail | 2019 |
| Rudol and Rolls Limited | Construction | 2024 |
| Rugeley Specsavers Limited | Wholesale & retail | 2006 |
| Rugeley Visionplus Limited | Wholesale & retail | 2006 |
| Ruislip Specsavers Hearcare Limited | Wholesale & retail | 2016 |
| Ruislip Specsavers Limited | Wholesale & retail | 2006 |
| Ruislip Visionplus Limited | Wholesale & retail | 2006 |
| Ruma Salons Limited | Other services | 2014 |
| Run Company Retail Limited | Wholesale & retail | 2018 |
| Runcorn Specsavers Hearcare Limited | Wholesale & retail | 2017 |
| Runners Mentality Ltd | Professional & scientific | 2025 |
| Runnymede Court Management Company Limited | Households | 1975 |
| Rushden Specsavers Limited | Wholesale & retail | 2009 |
| Rushden Visionplus Limited | Wholesale & retail | 2009 |
| Rushton Roofing Ltd | Construction | 2025 |
| Rushworth Architecture Ltd | Professional & scientific | 2019 |
| Russell Sky Limited | Financial services | 2009 |
| Russell Capital Limited | Real estate | 2026 |
| Russell Court (Marchwood) Limited | Real estate | 2001 |
| Russell Midco 2 Ltd | Professional & scientific | 2021 |
| Russell Rennison Boat Services Limited | Manufacturing | 2011 |
| Russell Telecom Limited | Information & communication | 2011 |