| Rescue Plumbing & GAS Ltd | Construction | 2021 |
| Research Innovation Technology Solution Ltd | Information & communication | 2021 |
| Reservoir Ltd | Health & social care | 2019 |
| Reshape Health Limited | Wholesale & retail | 2020 |
| Residential Development Solutions Ltd | Construction | 2025 |
| Residential Sprinklers Ltd | Construction | 2013 |
| Residentsline Limited | Financial services | 1999 |
| Resolvetrainingsolutions Ltd | Education | 2026 |
| Resonant Echoes Ltd | Information & communication | 2025 |
| Resonate Sports Atelier Ltd | Wholesale & retail | 2025 |
| Resource Solution Services Ltd | Professional & scientific | 2015 |
| RESOURCE24 Limited | Health & social care | 2024 |
| Restassured Residential Limited | Health & social care | 2019 |
| Restora Living Services Limited | Health & social care | 2026 |
| Restoration Cleaning Services Ltd | Administrative & support | 2024 |
| Restore and Refine Limited | Other services | 2026 |
| Restore Construction Ltd | Construction | 2026 |
| Restore Digital Limited | Administrative & support | 2002 |
| Restwaters Limited | Health & social care | 2023 |
| Retail Car Limited | Wholesale & retail | 2014 |
| Retail Crazy Limited | Wholesale & retail | 2022 |
| Retail Investments (Wolverhampton) Limited | Wholesale & retail | 2016 |
| Retail N Wholesale Ltd | Wholesale & retail | 2025 |
| Retail Rocket Ltd | Wholesale & retail | 2025 |
| Retail Room Limited | Wholesale & retail | 2026 |
| Retail Shop Fit Ltd | Manufacturing | 2026 |
| Retmi Packaging Co Ltd | Wholesale & retail | 2024 |
| Retro Car Audio UK Ltd | Wholesale & retail | 2026 |
| Retrofit Chap Limited | Professional & scientific | 2026 |
| Reuxai Ltd | Professional & scientific | 2025 |
| Revampworks Ltd | Real estate | 2010 |
| Revanta Advanced Materials Ltd | Manufacturing | 2025 |
| Revarrgo.Com Limited | Administrative & support | 2025 |
| REVELATION22 Care Limited | Health & social care | 2025 |
| Revere Holdings Ltd | Extraterritorial | 2023 |
| Revere Properties Ltd | Wholesale & retail | 2023 |
| Revinine Ltd | Administrative & support | 2021 |
| Revird Ltd | Transport & logistics | 2014 |
| Revival Nurse Ltd | Health & social care | 2023 |
| Revive Arcade Limited | Other services | 2024 |
| Revive Click Ltd | Wholesale & retail | 2025 |
| Revive Counselling CIC | Health & social care | 2024 |
| Revive Hair Artists Limited | Other services | 2025 |
| Revive Training Ltd | Administrative & support | 2011 |
| Reviving Kitchens Limited | Construction | 2013 |
| Revolution Gymnastics Club | Arts & recreation | 2015 |
| Revolution Real Estates Limited | Real estate | 2021 |
| Revolutionary Ideas Limited | Information & communication | 2024 |
| Revolver Music Limited | Information & communication | 1992 |
| Revolver World Limited | Manufacturing | 2008 |
| Rexall Chemist Limited | Wholesale & retail | 2018 |
| Rexall Holdings Limited | Financial services | 2017 |
| REYCAR777 for Sale and Garage Ltd | Wholesale & retail | 2025 |
| Reyhaan Transport Ltd | Transport & logistics | 2025 |
| RFC Rent-A-Dream Ltd | Real estate | 2024 |
| RFM Engineering Ltd | Extraterritorial | 2024 |
| RG Pharma and Investments Limited | Wholesale & retail | 2025 |
| RG Store Ltd | Manufacturing | 2025 |
| RGB Entertainments Limited | Administrative & support | 2017 |
| RGC Services Limited | Health & social care | 2017 |
| Rgharmony Care Limited | Health & social care | 2023 |
| RGL Electronics Limited | Manufacturing | 1999 |
| RGL Investments Limited | Real estate | 2025 |
| RGR Concrete Flooring Ltd | Construction | 2018 |
| RGR Housing Ltd | Real estate | 2023 |
| RH General Store Ltd | Wholesale & retail | 2025 |
| RH Positive Ltd | Wholesale & retail | 2024 |
| RH Property & Lettings Limited | Real estate | 2025 |
| Rhema of GOD Glory Ministry INT Limited | Other services | 2024 |
| Rhema of GOD Glory Ministry Ltd | Other services | 2025 |
| Rheman Limited | Wholesale & retail | 2012 |
| Rhino 5 Ltd | Extraterritorial | 2021 |
| Rhonecourt Limited | Households | 1971 |
| Rhubarb Blue Catering Ltd | Hospitality | 2018 |
| Rhynestone Ltd | Real estate | 2014 |
| Rhythm Boyz Entertainment Ltd | Information & communication | 2019 |
| Rhythm Productions Ltd | Information & communication | 2025 |
| RIA Digital Services Ltd | Professional & scientific | 2026 |
| Ria-Bella Limited | Wholesale & retail | 2014 |
| Riar Fortune Ltd | Construction | 2026 |
| Ribble Ventures Limited | Real estate | 2023 |
| Ribeiro Services Limited | Professional & scientific | 2018 |
| Rich Hughes Creative Ltd | Professional & scientific | 2024 |
| Rich Marketing Limited | Professional & scientific | 2016 |
| Richard & Co Property Services Ltd | Administrative & support | 2026 |
| Richard Bailey Education and Sport Limited | Professional & scientific | 2009 |
| Richard Parsons Consulting Limited | Professional & scientific | 2011 |
| Richard Shaw Engineering Ltd | Professional & scientific | 2008 |
| Richard Smith (Bilbrook) Limited | Professional & scientific | 2009 |
| Richards Tiling Limited | Construction | 2012 |
| Riches Street Limited | Households | 2019 |
| Richmond Bridge Developments Ltd | Real estate | 2015 |
| Richmond Caring for YOU Limited | Real estate | 1997 |
| Richmond GRP Ltd | Extraterritorial | 2023 |
| Richroxy Cleaning Company Ltd | Administrative & support | 2025 |
| Richroxy Company Ltd | Hospitality | 2024 |
| Rick's Chicks Ltd | Manufacturing | 2017 |
| Riders Choice Limited | Professional & scientific | 2002 |
| Ridextreme Ltd | Wholesale & retail | 2025 |
| Ridge Aggregates Ltd | Manufacturing | 2013 |