| Revital Beauty Care Limited | Extraterritorial | 2013 |
| Revital Clinics Limited | Extraterritorial | 2013 |
| Revital Healthcare Limited | Extraterritorial | 2013 |
| Revital Import & Export Limited | Extraterritorial | 2013 |
| Revital Pharma Limited | Extraterritorial | 2004 |
| Revital Supplements Limited | Extraterritorial | 2013 |
| Revital Vitamins Limited | Extraterritorial | 2013 |
| Revital Wholesale and Retail Limited | Extraterritorial | 2013 |
| Revital.Com Limited | Professional & scientific | 2000 |
| Revitality Ltd | Other services | 2024 |
| Revival Training Centre Limited | Education | 2013 |
| REX and Green Ltd | Professional & scientific | 2025 |
| Rexhaj Landscaping Ltd | Construction | 2025 |
| Rexhaj Ltd | Construction | 2020 |
| Rexon Automotive Services Ltd | Wholesale & retail | 2023 |
| REY 13 Limited | Administrative & support | 2018 |
| Reynolds Plastering Ltd | Construction | 2025 |
| Rfdtech Limited | Information & communication | 2015 |
| RG Asset Holdings Limited | Real estate | 2024 |
| Rgcg Property Solutions Ltd | Real estate | 2022 |
| Rhemart Ltd | Construction | 2022 |
| Rhino Solutions Group Limited | Wholesale & retail | 2022 |
| RHK Consulting Ltd | Information & communication | 2025 |
| RHK Mechanical Installations Ltd | Construction | 2014 |
| Rhythm Food & Wine Ltd | Wholesale & retail | 2025 |
| Richard Lapper & Associates Limited | Information & communication | 2015 |
| Richard Lawson Pianos Limited | Wholesale & retail | 2010 |
| Richards UK Investments Limited | Real estate | 2021 |
| Richking Enterprise Limited | Administrative & support | 2023 |
| Rickey Business Ltd | Administrative & support | 2010 |
| Rickmansworth Swim Club Ltd | Arts & recreation | 2023 |
| Rickmansworth Swimming Club Ltd | Arts & recreation | 2019 |
| Ricky Swim Club Ltd | Arts & recreation | 2019 |
| Ridgeline Property Maintenance Limited | Construction | 2016 |
| Riding Leviathan Ltd | Professional & scientific | 2019 |
| Riduna Spirits Ltd | Other services | 2019 |
| Right CUT Limited | Wholesale & retail | 2023 |
| Right Lane Motors Ltd | Wholesale & retail | 2026 |
| Right Roof Solutions Ltd | Construction | 2017 |
| Rightz-Shoring Ltd | Financial services | 2020 |
| Rigright Ltd | Construction | 2021 |
| Riksan Ltd | Real estate | 2006 |
| Riley & Tailor Limited | Wholesale & retail | 2020 |
| Ringway UK Roofing Service Ltd | Construction | 2021 |
| Rinikka Ltd | Financial services | 2025 |
| Rippon Corp Limited | Real estate | 2016 |
| Rise Offshore UK Ltd | Real estate | 2017 |
| Rise Safely Limited | Construction | 2016 |
| Rishams Ltd | Wholesale & retail | 2016 |
| Rising Dawnlight Limited | Hospitality | 2024 |
| Ritero Food Limited | Hospitality | 2025 |
| Ritzy Entertainment Ltd | Other services | 2002 |
| River Drinks Wholesale Ltd | Wholesale & retail | 2016 |
| River London Ltd | Professional & scientific | 2022 |
| Riytech Ltd | Information & communication | 2016 |
| RJA Building & Roofing Ltd. | Construction | 2022 |
| RJD Roofing & Building Contractors Limited | Construction | 2025 |
| RJD Roofing & Building Limited | Construction | 2024 |
| RJS & Sons Flooring Limited | Construction | 2017 |
| RKD Developments Ltd | Real estate | 2022 |
| Rkdg Investment Ltd | Real estate | 2024 |
| RKS Consulting Ltd | Information & communication | 2025 |
| RLR Properties Limited | Real estate | 2004 |
| RM Itsm Services Limited | Information & communication | 2015 |
| RM Sunn Limited | Professional & scientific | 2022 |
| RMB Property Services Ltd | Construction | 2018 |
| Rmdm Globe Ltd | Professional & scientific | 2019 |
| Rmor Ventures Limited | Professional & scientific | 2017 |
| RMU Group Ltd | Construction | 2024 |
| RNC Accountants Ltd | Professional & scientific | 2015 |
| RNJ Property Group Ltd | Real estate | 2021 |
| Road Aggregates Managements Ltd | Administrative & support | 2025 |
| Road Aggregates Surfacing Ltd | Construction | 2023 |
| Roadnight Limited | Wholesale & retail | 2004 |
| Roadpoint Limited | Construction | 2008 |
| Roadran Limited | Professional & scientific | 1999 |
| Roadstone Tarmac Ltd | Construction | 2026 |
| Roath Cooks Limited | Hospitality | 2026 |
| Robenc Property Company Ltd | Real estate | 2023 |
| Robert Cronin Building Services Limited | Construction | 2014 |
| Roberts Family Law Legal Services Ltd | Professional & scientific | 2007 |
| Robertsons Arbitrage Ltd | Wholesale & retail | 2022 |
| Robins Capital Limited | Financial services | 2025 |
| Robomate Ltd | Information & communication | 2020 |
| Robot World Ltd | Professional & scientific | 2018 |
| Robson & Vargas Limited | Administrative & support | 2014 |
| Rocket Ecom Ltd | Wholesale & retail | 2023 |
| Rocket Rail Ltd | Transport & logistics | 2023 |
| Roconstruct Solutions Ltd | Construction | 2024 |
| Rogba Ltd | Transport & logistics | 2014 |
| Roger Edwards Motors Limited | Wholesale & retail | 2023 |
| Rohif Ltd | Wholesale & retail | 2023 |
| Roisilly Limited | Hospitality | 2021 |
| Roith Media Ltd | Information & communication | 2020 |
| ROL Dryliner Ltd | Construction | 2018 |
| Role UK Awards Limited | Education | 2021 |
| Rollestone Park Ltd | Administrative & support | 2024 |
| Rolo APS Ltd | Information & communication | 2026 |
| Romania Ltd | Wholesale & retail | 2021 |
| Romero Ferrari Carpentry and Joinery Ltd | Construction | 2018 |