| Roselins Limited | Real estate | 2006 |
| Roseman Limited | Real estate | 2024 |
| Rosemanage Limited | Real estate | 2024 |
| Rosemary’S Grove Ltd | Wholesale & retail | 2025 |
| Rosemoore + Co Accountants Ltd | Professional & scientific | 2018 |
| Rosepeace Service Limited | Health & social care | 2019 |
| Roserver Ltd | Information & communication | 2026 |
| Roserx Ltd | Administrative & support | 2024 |
| Roshan & Sons Ltd | Real estate | 2020 |
| Roshan Properties Ltd | Real estate | 2014 |
| Roshan Trading UK Ltd | Wholesale & retail | 2022 |
| Roshani Patel Limited | | 2015 |
| Rosi Art Ltd | Construction | 2021 |
| Rosie Singha Productions Ltd | Arts & recreation | 2024 |
| Rosinante Property Holdings Limited | Real estate | 2020 |
| Roslie Ltd | Wholesale & retail | 2025 |
| Rosp Building Services Ltd | Construction | 2020 |
| Ross Building Services Ltd | Construction | 2019 |
| Ross Giant Ltd | Information & communication | 2024 |
| Ross Lyon & Co Ltd | Other services | 2007 |
| Rosslyn Car Parts (London) Ltd | Wholesale & retail | 2026 |
| Rosslyn Car Parts Ltd | Wholesale & retail | 2025 |
| Rossmore Hotel Limited | Hospitality | 2004 |
| Rossnet Ltd. | Information & communication | 2015 |
| Rotana Hotel Ltd | Hospitality | 2013 |
| Rotari Ltd | Construction | 2017 |
| Rotaryswitchhub Ltd | Wholesale & retail | 2025 |
| Rotubury Penerley Limited | Information & communication | 2023 |
| Roua Ltd | Professional & scientific | 2009 |
| Roum at Home Ltd | Other services | 2025 |
| Route Ltd | Administrative & support | 2023 |
| Rovan Group Limited | Construction | 2019 |
| Rovario Ltd | Wholesale & retail | 2025 |
| Rovellon Ltd | Real estate | 2025 |
| Roving Travel & Co Ltd | Professional & scientific | 2023 |
| ROW Drylining Limited | Construction | 2022 |
| Rowaf Ltd | Information & communication | 2025 |
| Rowans Coffee Shop (2024) Limited | Hospitality | 2024 |
| Rowans Food Deliveries Ltd | Hospitality | 2026 |
| Rowden & Terrell Ltd | Administrative & support | 2014 |
| Rowe & Sabrina Co Ltd | Wholesale & retail | 2012 |
| ROX Security Services Limited | Administrative & support | 2023 |
| Roxsel Entertainment Limited | Wholesale & retail | 2017 |
| Roxsel Limited | Wholesale & retail | 2025 |
| Roxville Ltd | Real estate | 2006 |
| Roxwell Care Gidea Park Limited | Other services | 2021 |
| Roxwell Care Group Limited | Other services | 2020 |
| Roxwell Care Ilford Limited | Other services | 2021 |
| Roxwell Care Limited | Other services | 2020 |
| ROY Marina Ltd | Wholesale & retail | 2021 |
| ROY Medics Limited | Health & social care | 2013 |
| ROY Trading Ltd | Wholesale & retail | 2023 |
| Royale Shehzada Services Ltd | Administrative & support | 2022 |
| Royce and Locke Limited | Real estate | 2016 |
| Royce Services Limited | Real estate | 2022 |
| Roydon Properties Limited | Real estate | 2023 |
| Royel Estate & Builders Limited | Real estate | 2011 |
| Royston Developments (London) Ltd | Construction | 2014 |
| Royston Garden UK Limited | Wholesale & retail | 2003 |
| Rozwan Ltd | Wholesale & retail | 2023 |
| Rozy & Vale Group Limited | Transport & logistics | 2025 |
| RP Capital Holdings Ltd | Financial services | 2019 |
| RP Strategic Investments Limited | Real estate | 2026 |
| Rpal Corporations Ltd | Wholesale & retail | 2024 |
| Rpal Enterprises Ltd | Wholesale & retail | 2024 |
| Rpemc Limited | Professional & scientific | 2017 |
| RPH Innovations Limited | Professional & scientific | 2014 |
| RPK Technologies Ltd | Information & communication | 2010 |
| RPN Properties Limited | Real estate | 2020 |
| RPR Group Limited | Construction | 2018 |
| RPS Investments Ltd | Real estate | 2013 |
| Rpsk Ltd | Hospitality | 2019 |
| RR Care and Consulting Services Ltd | Professional & scientific | 2023 |
| RR Cleaning & Removals Limited | Administrative & support | 2025 |
| RR Concrete Ltd | Construction | 2019 |
| RR London Limited | Real estate | 2021 |
| RR Market Access Ltd | Professional & scientific | 2018 |
| RR Plumbing Mart Ltd | Wholesale & retail | 2025 |
| RR Property Holdings Two Ltd | Real estate | 2021 |
| RR Removals & Logistics Limited | Transport & logistics | 2026 |
| RR Renovate and Build Limited | Construction | 2025 |
| RR Rocks Limited | Manufacturing | 2025 |
| RR1 Investments Ltd | Real estate | 2023 |
| RRG Properties Limited | Real estate | 2023 |
| RRH Capital Ltd | Real estate | 2019 |
| RRL Homes Ltd | Real estate | 2021 |
| Rrotani Ltd | Wholesale & retail | 2019 |
| RRP Optics Ltd | Health & social care | 2019 |
| RS (Ilford) Properties Ltd | Real estate | 2025 |
| RS Apparel Limited | Wholesale & retail | 2026 |
| RS Cash and Carry Ltd | Wholesale & retail | 2025 |
| RS Chicken (Ilford) Ltd | Hospitality | 2016 |
| RS Consolidators Ltd | Construction | 2026 |
| RS Consultants HR Limited | Professional & scientific | 2025 |
| RS Data Solutions Limited | Information & communication | 2022 |
| RS DRY Cleaning Limited | Other services | 2017 |
| RS Protection Ltd | Administrative & support | 2024 |
| RS Provisions Limited | Hospitality | 2017 |
| RS Reliable Products Ltd | Wholesale & retail | 2025 |
| RS Star Productions Ltd | Information & communication | 2019 |