| Ratiba Ltd | Information & communication | 2024 |
| RAV Developments Limited | Real estate | 1987 |
| Ravdel Ltd | Other services | 2020 |
| Ravons Private Ltd | Hospitality | 2025 |
| Raya Consulting Ltd | Information & communication | 2018 |
| Raydon Property Ltd | Real estate | 2024 |
| Rayn Corporation Ltd | Professional & scientific | 2025 |
| Raynet Care C.I.C. | Real estate | 2021 |
| Razeghi Ltd | Transport & logistics | 2012 |
| RB People and Leadership Advisory Ltd | Professional & scientific | 2026 |
| RBR Cars Ltd | Wholesale & retail | 2026 |
| RC Provide Ltd | Construction | 2024 |
| RC Traders Limited | Administrative & support | 2016 |
| RCA Facades Ltd | Construction | 2025 |
| RCA Facades Systems Solutions Ltd | Construction | 2016 |
| RCC Bar & Events Ltd | Hospitality | 2026 |
| RD Group Limited | Construction | 2015 |
| RD Security Training Ltd | Education | 2014 |
| RDP Scaffolding Limited | Construction | 2017 |
| Realaccess Property Limited | Real estate | 2024 |
| Realty 2 Home Ltd | Real estate | 2025 |
| Rebel International Ltd | Arts & recreation | 2021 |
| Recoline Ltd | Transport & logistics | 2012 |
| Red Carpet Homes Ltd | Real estate | 2023 |
| Red Sphinx Ltd | Information & communication | 2019 |
| Redline Sport UK Ltd | Wholesale & retail | 2016 |
| Reemee Investment Ltd | Real estate | 2019 |
| Reeves Venture Limited | Administrative & support | 2025 |
| Reflex Physio Limited | Other services | 2025 |
| Refyned Barbers Ltd | Other services | 2026 |
| Regalia Holdings Limited | Wholesale & retail | 2026 |
| Rehoboth Management Consulting Limited | Information & communication | 2014 |
| Reidstone Roofing Ltd | Construction | 2024 |
| Reklama Ltd | Professional & scientific | 2026 |
| Reliance Facilities Limited | Administrative & support | 2026 |
| Reliance Property Ltd | Real estate | 2025 |
| Reliance Property Services Ltd | Real estate | 2024 |
| Reliance Services (UK) Ltd | Administrative & support | 2005 |
| Reliance Worldwide Courier & Mail Services Ltd | Transport & logistics | 2021 |
| Reliance Worldwide Logistic Solutions Ltd | Transport & logistics | 2011 |
| Relianceservise Ltd | Administrative & support | 2021 |
| Remus Lupu Ltd | Construction | 2022 |
| Ren-Cars Ltd. | Extraterritorial | 2012 |
| Renovari Limited | Water & waste | 2018 |
| Repster Ltd | Wholesale & retail | 2020 |
| Rerouting Initiative CIC | Education | 2017 |
| Resem Limited | Health & social care | 2022 |
| Restart Bars Limited | Arts & recreation | 2019 |
| Restore PLC | Administrative & support | 2004 |
| Reuse Group Holdings Ltd | Financial services | 2025 |
| Reuse Strategic Partnerships Ltd | Water & waste | 2025 |
| Reuse Technology Group Ltd | Water & waste | 2008 |
| REV Construction Ltd | Construction | 2025 |
| REV Ltd | Wholesale & retail | 2025 |
| Rhema Development Ltd | Construction | 2024 |
| RI Global Trade Ltd | Wholesale & retail | 2026 |
| Rich Car Sales Ltd | Wholesale & retail | 2024 |
| Rich.Crist Ltd | Construction | 2019 |
| Richalmond Inc. Ltd | Health & social care | 2020 |
| Ricktoch Limited | Transport & logistics | 2026 |
| Ridhi Limited | Other services | 2022 |
| RIGHT2MOVE Ltd | Real estate | 2020 |
| Rilk Ltd | Health & social care | 2018 |
| Rionda. Ltd | Construction | 2021 |
| RJK Transport Limited | Transport & logistics | 2014 |
| Rjkad Limited | Health & social care | 2020 |
| RM Tyres Ltd | Wholesale & retail | 2023 |
| RMB Professionals Ltd. | Information & communication | 2024 |
| Rmcars Ltd | Wholesale & retail | 2019 |
| Road Car Recovery Ltd | Transport & logistics | 2026 |
| Roadside Media UK2 Limited | Other services | 2008 |
| Roadtrans Haulage Ltd | Transport & logistics | 2021 |
| ROB Brown Graphics Ltd. | Professional & scientific | 2013 |
| Roberson Accountants Limited | Professional & scientific | 2018 |
| Robert & Daughters Ltd | Administrative & support | 2026 |
| Robertosabrinaadam Ltd | Construction | 2026 |
| Robi Property Ltd | Real estate | 2024 |
| Robin Specialist Autism Services Ltd | Health & social care | 2018 |
| Robust Testing Solutions Ltd | Professional & scientific | 2017 |
| Roman Building Contractors Ltd | Construction | 2017 |
| Romechanical Limited | Construction | 2023 |
| Romfordbox Limited | Wholesale & retail | 2024 |
| Ronakins Limited | Administrative & support | 2020 |
| Rondel Limited | Health & social care | 2015 |
| Ronin Build Ltd | Construction | 2022 |
| Ronnie & Ronnie Services Limited | Wholesale & retail | 2020 |
| Rontex Limited | Wholesale & retail | 2009 |
| ROS Express Ltd. | Transport & logistics | 2020 |
| Rosebank Property Development Ltd | Real estate | 2022 |
| Roshan Apparel Ltd | Wholesale & retail | 2025 |
| Rosie Room Ltd | Households | 2022 |
| Ross Mckinly Accountants Limited | Professional & scientific | 2022 |
| Round-The-World Logistics (UK) Limited | Transport & logistics | 1997 |
| Rowlands Motor Company Ltd | Wholesale & retail | 2021 |
| Royel Tissue Ltd | Wholesale & retail | 2022 |
| Rptiler Ltd | Construction | 2017 |
| RS Accounts & Tax Ltd | Professional & scientific | 2023 |
| RS Brother Services Ltd | Construction | 2024 |
| RS Premium Ltd | Construction | 2023 |
| RTA Car & Commercial Ltd | Wholesale & retail | 2020 |