| Ravens Mount (Leeds) Limited | Real estate | 1975 |
| Ravensdale Management Limited | Households | 1989 |
| Ravensdale Ventures Ltd | Financial services | 2023 |
| RAW Canvas Ltd | Manufacturing | 2021 |
| RAW Creative Group Limited | Professional & scientific | 2023 |
| RAW Power Films Ltd | Information & communication | 2016 |
| RAW Securities Limited | Real estate | 2019 |
| Rawabit AL Qimma International Company Ltd | Extraterritorial | 2022 |
| Raworths LLP | | 2006 |
| Rayner & Green Ltd | Financial services | 2025 |
| Rayner & Green Salon Limited | Other services | 2016 |
| Rayner Evans Limited | Extraterritorial | 2025 |
| RB Sports Management Ltd | Arts & recreation | 2014 |
| RCN Networks Limited | Information & communication | 2002 |
| RCN Technology Services Ltd | Information & communication | 2024 |
| RD & Sons Design & Build Limited | Construction | 2024 |
| RDR Property Investments + Lettings Limited | Real estate | 2019 |
| RDS Safety Management Ltd | Professional & scientific | 2021 |
| Re:Connect Consulting & Services Ltd | Real estate | 2021 |
| Reach Digital and Data Group Ltd | Information & communication | 2021 |
| React 2 Contact Limited | Education | 2026 |
| Reader Tinsley Designs Ltd | Professional & scientific | 2013 |
| Real Markets Ltd | Wholesale & retail | 2023 |
| Real Quiet Limited | Real estate | 2023 |
| Real Rapport Ltd | Administrative & support | 2015 |
| Real Shetland Company Limited | Professional & scientific | 2008 |
| Really Clean Team Ltd | Administrative & support | 2012 |
| Really Indian Foods Ltd | Manufacturing | 2024 |
| Reawakening North Yorkshire CIC | Health & social care | 2026 |
| Rebecca Jane Consultancy Ltd | Professional & scientific | 2024 |
| Rebel Design Ltd | Professional & scientific | 2020 |
| Recognii Ltd | Information & communication | 2020 |
| RECRUIT4HEALTH Ltd | Administrative & support | 2002 |
| RECRUIT4VETS Ltd | Administrative & support | 2012 |
| Red & Co Trading Ltd | Wholesale & retail | 2025 |
| Red Beryl Consulting Limited | Other services | 2017 |
| Red Gables Freehold Limited | Real estate | 2021 |
| Red Gables Management Limited | Households | 2022 |
| Red Kite Health Consulting Ltd | Information & communication | 2023 |
| Red Kite Learning Trust | Education | 2011 |
| Red Kite Love Ltd | Administrative & support | 2023 |
| Red Kite Recruitment Group Ltd | Hospitality | 2009 |
| Red Kite Strategic Consulting Limited | Information & communication | 2025 |
| Red Line Components Limited | Wholesale & retail | 1989 |
| Red Line Foundry Ltd | Professional & scientific | 2022 |
| Red Panda Marketing Ltd | Professional & scientific | 2019 |
| Red Sail Marketing Ltd | Professional & scientific | 2025 |
| Red Scorpion Marketing & Coaching Ltd | Professional & scientific | 2015 |
| Red Strength Limited | Arts & recreation | 2019 |
| Red Syke Services Limited | Administrative & support | 2018 |
| Redcentric PLC | Professional & scientific | 2013 |
| Redcentric Solutions Limited | Information & communication | 2012 |
| Redhouse Originals Limited | Wholesale & retail | 2015 |
| Redsquare Publishing UK Limited | Information & communication | 2009 |
| Reedoval Limited | Wholesale & retail | 2020 |
| REEL5 Ltd | Wholesale & retail | 2020 |
| Refine Sales Training Ltd | Professional & scientific | 2014 |
| Reflex IT Marketing Limited | Administrative & support | 2022 |
| Reform and Repeal Ltd | Professional & scientific | 2025 |
| Regal Flowers Ltd | Wholesale & retail | 2017 |
| Regency Beaumont Ltd | Real estate | 2024 |
| Regency Bouquets Ltd | Administrative & support | 2017 |
| Regency Management (Harrogate) Limited | Households | 2019 |
| Regenre Ltd | Construction | 2020 |
| Regentstone Legal Finance Ltd | Financial services | 2024 |
| REGG1E Limited | Extraterritorial | 2020 |
| Registerprint Machinery Limited | Manufacturing | 2003 |
| REIN4CE Site Solutions Ltd | Construction | 2011 |
| Reincantation Ltd | Other services | 2019 |
| Reject Ltd | Extraterritorial | 2012 |
| Rekizar Contracting Ltd | Wholesale & retail | 2021 |
| Relaxing Stay Homes Ltd | Real estate | 2018 |
| Relevanz Ltd | Professional & scientific | 2019 |
| Rematch Limited | Wholesale & retail | 2024 |
| Remora Capital BTR Limited | Financial services | 2019 |
| Remora Capital Limited | Financial services | 2019 |
| Remora Capital Property Limited | Administrative & support | 2019 |
| Remuneration Limited | Extraterritorial | 2012 |
| Renaissance Dental Design Limited | Manufacturing | 2007 |
| Renaissance Financial Solutions Limited | Other services | 2009 |
| Renaissance IFA LLP | | 2009 |
| Renewable Energy Surveys Ltd | Wholesale & retail | 2011 |
| Renewtech Limited | Wholesale & retail | 2011 |
| Renewtech UK Holding Limited | Financial services | 2025 |
| Rent a Home Ltd | Households | 2022 |
| Renton Brookes Limited | Professional & scientific | 2024 |
| RES Hospitality Ltd | Professional & scientific | 2025 |
| RES PUB Co Ltd | Hospitality | 2026 |
| Research Loops (UK) Limited | Information & communication | 2023 |
| Research Loops Limited | Information & communication | 2022 |
| Reservations Made for YOU Ltd | Wholesale & retail | 2024 |
| Reservoir Way Services Limited | Households | 2024 |
| Resi Software Solution Limited | Information & communication | 2025 |
| Resolve and Rise Limited | Professional & scientific | 2025 |
| Rest Assured Property Limited | Real estate | 2022 |
| Restorative Bridges Training Mediation and Counselling Ltd | Education | 2025 |
| Restore Castle Hill Farm Ltd | Construction | 2023 |
| Restore Chapel Lane Limited | Construction | 2023 |
| Restore Home Farm Limited | Construction | 2023 |
| Restore Jasmine Barns Ltd | Construction | 2023 |