| R.Wayne Electrical Services Limited | Construction | 2017 |
| RA Engineering Services Limited | Professional & scientific | 2018 |
| Raamjaey Consultancy Ltd | Professional & scientific | 2014 |
| Rachel & Qiao Property Limited | Real estate | 2019 |
| Radiate Music Group Ltd | Information & communication | 2025 |
| Radulescu F Delivery Ltd | Transport & logistics | 2024 |
| Rahma (UK) Limited | Professional & scientific | 2006 |
| Railixai Limited | Information & communication | 2026 |
| Raisonhaldar Limited | Health & social care | 2023 |
| Rakhee Properties Management Limited | Real estate | 2026 |
| Ram's Express Ltd | Other services | 2018 |
| Rarebranch Limited | Administrative & support | 1987 |
| Rark Management Limited | Real estate | 2023 |
| Ravenscroft (Basildon) Residents Association Limited | Households | 1984 |
| Ravit Constructions Ltd | Construction | 2014 |
| Raymond GAS Expert Limited | Construction | 2026 |
| RAYNA23 Ltd | Construction | 2023 |
| RBN Capital Ltd | Financial services | 2019 |
| RC5 Accessories Ltd | Wholesale & retail | 2021 |
| Rccg Rehoboth Centre Beckenham | Other services | 2015 |
| RCX Care Limited | Administrative & support | 2025 |
| RDZ Capital Ltd | Professional & scientific | 2026 |
| Real Village Feast Ltd | Hospitality | 2021 |
| Red Robotics Ltd | Professional & scientific | 2015 |
| Redcroft Limited | Professional & scientific | 2017 |
| Reel IT Media Ltd | Information & communication | 2026 |
| Refurbly Home Improvements Ltd | Information & communication | 2009 |
| Regulus Services Limited | Construction | 2020 |
| Releaf Games Limited | Wholesale & retail | 2025 |
| Reliable Heating & Plumbing Limited | Construction | 2025 |
| REM Consultancy Limited | Information & communication | 2008 |
| Removals Man&Van Ltd | Transport & logistics | 2022 |
| Render Solution Mario Ltd | Construction | 2014 |
| Renewable Strategy Limited | Professional & scientific | 2013 |
| Reno Mart Ltd | Construction | 2017 |
| Resell Vaultz Ltd | Wholesale & retail | 2025 |
| REY501 Ltd | Administrative & support | 2021 |
| Rezajp Ltd | Information & communication | 2019 |
| Rhodes Project Consultancy Ltd | Information & communication | 2012 |
| Richard Skidmore Consultancy Limited | Professional & scientific | 2013 |
| Richood Ltd | Extraterritorial | 2023 |
| Richstump Limited | Agriculture & fishing | 2012 |
| Ride in the Future Ltd | Transport & logistics | 2021 |
| Right to the Top Services Limited | Construction | 2018 |
| Riris IT Solutions Limited | Information & communication | 2016 |
| Rita a & Sons Ltd | Real estate | 2025 |
| Riteway Rigging Ltd | Professional & scientific | 2025 |
| Riverfront HGS Limited | Financial services | 2017 |
| Riverside Community Association Limited | Health & social care | 2013 |
| RJS London Investments Ltd | Real estate | 2020 |
| RJS Property Advisory Limited | Real estate | 2011 |
| RJS Residential Limited | Real estate | 2021 |
| RK Property Projects Ltd | Real estate | 2024 |
| RKV Consultants Ltd | Professional & scientific | 2018 |
| RLB Solutions Limited | Financial services | 2026 |
| RMR Residential Ltd | Real estate | 2021 |
| RNP Medical Services Limited | Professional & scientific | 2011 |
| Road Star Deliveries Limited | Transport & logistics | 2012 |
| Rocket Scaffolding Ltd | Construction | 2022 |
| Rocketsurge Limited | Wholesale & retail | 2024 |
| Rofeshlroy Optimal Building & Construction Ltd | Construction | 2022 |
| Rogin UK Company Ltd | Wholesale & retail | 2020 |
| Rohan Services Ltd | Construction | 2024 |
| Rohini Investments Limited | Real estate | 2019 |
| Rojina Limited | Real estate | 2025 |
| Roko Global Limited | Wholesale & retail | 2026 |
| Rollercoin Properties Ltd | Real estate | 2026 |
| Rollins Electrical Limited | Administrative & support | 2019 |
| Romanov Communications Ltd | Professional & scientific | 2019 |
| Rooftop Films Ltd | Information & communication | 2013 |
| Rooks and Castle Ltd | Information & communication | 2024 |
| Rooted Together Limited | Administrative & support | 2025 |
| Roott One Ltd | Information & communication | 2025 |
| Rootworks Advisory Services Ltd | Professional & scientific | 2025 |
| ROS 9 Limited | Construction | 2011 |
| Rosehill Food Limited | Other services | 2014 |
| Rosehill Halal Meat Ltd | Wholesale & retail | 2019 |
| Roses of Rosehill Limited | Wholesale & retail | 2022 |
| Rosey Flawless Cleaners Ltd | Households | 2017 |
| Ross Grainger (Electrical Services) Ltd | Information & communication | 2009 |
| Rotherfield Place Residents Limited | Households | 2012 |
| Rouca Solutions Limited | Information & communication | 2018 |
| Rowanwell Ltd | Other services | 2026 |
| RP A1 Accountancy Services Ltd | Professional & scientific | 2019 |
| Rram Technologies Ltd | Information & communication | 2023 |
| Rroshini Ltd | Wholesale & retail | 2023 |
| RS Fit Ltd | Extraterritorial | 2016 |
| Rtcp Holdings Limited | Financial services | 2024 |
| Rtcp Limited | Wholesale & retail | 2005 |
| RTS Care Limited | Public administration | 2022 |
| Ruaan Investment Ltd | Real estate | 2024 |
| Rubix Housing Ltd | Real estate | 2022 |
| Rudradhan Lalsat Ltd | Real estate | 2025 |
| Runningthenumbers Limited | Professional & scientific | 2012 |
| RWW Plumbing & Heating Ltd | Administrative & support | 2011 |
| RY Services Ltd | Transport & logistics | 2023 |
| Rydl Limited | Construction | 2017 |
| RYM Technologies Limited | Information & communication | 2014 |
| RZ Enterprise Ltd | Wholesale & retail | 2013 |
| S and K Engineering Services Ltd | Construction | 2026 |