| Ronica Limited | Professional & scientific | 2010 |
| Ronkar Ltd | Professional & scientific | 2011 |
| Roof N Rafters Ltd | Construction | 2025 |
| Roptia Limited | Information & communication | 2020 |
| Rosalee Cameron Ltd | Health & social care | 2014 |
| Rose Garden Consultants Ltd | Professional & scientific | 2011 |
| Rosec Security UK Ltd | Administrative & support | 2018 |
| Rosecroft Estate Management Ltd | Households | 2025 |
| Rosegold Consulting Limited | Professional & scientific | 2024 |
| Rosenau Ltd | Construction | 2025 |
| Roseplace (Greenwich) Limited | Construction | 1998 |
| Rosescott Limited | Extraterritorial | 1984 |
| Ross Hewitt Holdings Limited | Financial services | 2026 |
| Rothgen Construction Ltd. | Construction | 2014 |
| Rough Black Rock Ltd | Professional & scientific | 2026 |
| Roussmark Properties Limited | Construction | 2021 |
| Route Electrical Ltd | Construction | 2015 |
| Roux Properties Ltd | Real estate | 2019 |
| Rowree Invest Ltd | Real estate | 2020 |
| Roxtone Limited | Professional & scientific | 2022 |
| Royal Star Cafe Bar Ltd | Hospitality | 2009 |
| Royale Dwellings Limited | Real estate | 2025 |
| Roylon Court Freehold Ltd | Households | 2003 |
| Roymar Holdings Limited | Households | 2022 |
| Roymar Limited | Real estate | 2017 |
| Roymar Properties Limited | Real estate | 2021 |
| RP Flooring Limited | Construction | 2017 |
| Rpgs SPV Ltd | Real estate | 2017 |
| RPK Global Developments Limited | Construction | 2017 |
| RPM (South East) Limited | Construction | 2014 |
| RPM Property Rentals Limited | Real estate | 2020 |
| RPM Rentals Ltd | Real estate | 2022 |
| RR Recovery Limited | Transport & logistics | 2019 |
| RS Drillcut Solutions Ltd | Construction | 2013 |
| RS FIX Limited | Construction | 2015 |
| RSC Data Management Limited | Professional & scientific | 2019 |
| RSH Wahab Estates Limited | Real estate | 2025 |
| RSK Medical Services Ltd | Health & social care | 2024 |
| RSM Engineering Services Ltd. | Information & communication | 2019 |
| Rspe Fitness Ltd | Arts & recreation | 2025 |
| RSPS1 Ltd | Real estate | 2016 |
| Rsrm Ltd | Administrative & support | 2022 |
| RSS Site Services Limited | Construction | 2026 |
| Rsuk Limited | Construction | 2017 |
| RTH Services Ltd | Manufacturing | 2018 |
| Rubin Constructions Ltd | Construction | 2026 |
| Ruby Property Services Ltd | Households | 2020 |
| Ruby TZZ Estates Ltd | Real estate | 2012 |
| Rubybel Limited | Health & social care | 2022 |
| Rudex Capital Limited | Real estate | 2021 |
| Ruhom Ltd | Real estate | 2023 |
| Run of Show Ltd | Professional & scientific | 2023 |
| Rupa Photography Limited | Professional & scientific | 2007 |
| Rushcliffe RE Limited | Financial services | 2020 |
| Russell Court Management Limited | Households | 1971 |
| Rustic Comfort Catering Ltd | Hospitality | 2024 |
| Ruxley Heights Limited | Real estate | 1972 |
| RVT Consultancy Ltd | Professional & scientific | 2024 |
| Ryan J Techno Limited | Information & communication | 2020 |
| Rybar (Southern) Ltd | Construction | 2010 |
| Rydm Dwelling Limited | Real estate | 2025 |
| S & H Property Ltd | Real estate | 2018 |
| S & M Property Development Limited | Construction | 2017 |
| S a H Brogden Limited | Administrative & support | 2022 |
| S C Biler Limited | Wholesale & retail | 2025 |
| S Cloud Electrical Services Limited | Construction | 2016 |
| S E Contract Services Ltd | Real estate | 2025 |
| S P Building Projects Ltd | Construction | 2018 |
| S S Plumbing & GAS Heating Services Limited | Construction | 2007 |
| S Wood Holdings Limited | Financial services | 2024 |
| S&A Beaven Property Ltd | Real estate | 2019 |
| S&D Roofing (London) Limited | Construction | 2016 |
| S&L Developers Ltd | Construction | 2025 |
| S&L Drainage Ltd | Water & waste | 2015 |
| S&R Pizza Ltd | Hospitality | 2025 |
| S&S Cloud Tech Limited | Information & communication | 2023 |
| S&Scproperties Ltd | Real estate | 2025 |
| S&Y Property Investment Ltd | Real estate | 2017 |
| S-L-M Hair Ltd | Other services | 2019 |
| S. E. Medical Limited | Health & social care | 2026 |
| S. N. Sports Promotions Limited | Arts & recreation | 2023 |
| S.O.S Site Repairs Ltd | Construction | 2023 |
| S.T. Vapes Limited | Wholesale & retail | 2016 |
| S2 Consultant Limited | Professional & scientific | 2018 |
| S3 Innovations Ltd | Information & communication | 2025 |
| SA Brogden Limited | Administrative & support | 2020 |
| Sa&C Solutions Limited | Transport & logistics | 2020 |
| SA3 Properties Limited | Real estate | 2025 |
| Saar Made Limited | Manufacturing | 2026 |
| Saas Property Investment Ltd | Real estate | 2024 |
| Saatzon Group Limited | Extraterritorial | 2023 |
| Sabath & Glory House Ltd | Real estate | 2022 |
| Sabbath Health Ltd | Administrative & support | 2022 |
| Sabe Holdings Ltd | Financial services | 2022 |
| SAD Property Development Limited | Real estate | 2024 |
| Sadeh | Agriculture & fishing | 2016 |
| Sadozai Orpington Ltd | Hospitality | 2023 |
| Safe & Exquisite Services Limited | Real estate | 2024 |
| Safeguarding NOW Consultancy Limited | Education | 2013 |
| Safeline Services Ltd | Real estate | 1992 |