| RK LVT Flooring Ltd | Construction | 2025 |
| RK2 Holdings Ltd | Financial services | 2026 |
| Rkif Ltd | Real estate | 2017 |
| RKJ Barbers Limited | Other services | 2017 |
| RKJ Services Limited | Real estate | 2015 |
| RKK Property Group Ltd | Real estate | 2021 |
| Rkkk Limited | Health & social care | 2022 |
| RKP Investments Limited | Real estate | 2013 |
| RL SM Ventures Ltd | Real estate | 2025 |
| RL Wright Group Ltd | Financial services | 2024 |
| RL Wright Investments Ltd | Real estate | 2020 |
| RL Wright Limited | Real estate | 2021 |
| Rl&S Holdings Limited | Financial services | 2020 |
| RLA Consultants Limited | Information & communication | 2013 |
| Rlaw Accountancy Limited | Professional & scientific | 2018 |
| RLB Windows Ltd | Construction | 2023 |
| RLF Construction Limited | Construction | 2024 |
| RLM Solutions Ltd | Information & communication | 2022 |
| RLR Developments Limited | Real estate | 2016 |
| Rluk Injection Ltd | Construction | 2022 |
| RM Business Enterprise Ltd | Hospitality | 2013 |
| RM Cardiac Physiology Services Ltd | Health & social care | 2023 |
| RM Joinery Contractors Limited | Construction | 2024 |
| RM Motos Ltd | Wholesale & retail | 2025 |
| RM Property Advisors Ltd | Professional & scientific | 2021 |
| RM Rail Engineering Ltd | Professional & scientific | 2025 |
| RM Services INT Ltd | Health & social care | 2024 |
| RM Site Services Ltd | Construction | 2020 |
| RMA Logistics Group Ltd | Wholesale & retail | 2019 |
| Rmar Consulting Ltd | Information & communication | 2016 |
| Rmaunga Limited | Health & social care | 2018 |
| RMG Corp Ltd | Professional & scientific | 2018 |
| RMG Investments Ltd | Real estate | 2026 |
| RML Plumbing and Heating Limited | Construction | 2020 |
| RMR Fleet Ltd | Other services | 2017 |
| RMS Building & Landscaping Limited | Construction | 2022 |
| RMS GAS Limited | Construction | 2025 |
| RMT Investments Limited | Hospitality | 2004 |
| RN Football Limited | Professional & scientific | 2026 |
| RN Sales Consulting Ltd | Professional & scientific | 2024 |
| RNG1 Haulage Ltd | Transport & logistics | 2026 |
| RNS Engineering (Midlands) Limited | Professional & scientific | 2026 |
| Rnsr Ltd | Construction | 2025 |
| RNT Solutions Ltd | Information & communication | 2020 |
| RO Community Link C.I.C. | Other services | 2025 |
| Roadhouse Bar Events Limited | Hospitality | 2024 |
| Roadhouse Tattoo Studio Limited | Other services | 2016 |
| Roadway Civil Engineering & Surfacing Ltd | Extraterritorial | 2000 |
| Roadways 313 Ltd | Transport & logistics | 2025 |
| Roata Ltd | Transport & logistics | 2021 |
| Roayl Films Limited | Information & communication | 2011 |
| ROB Civils Ltd | Construction | 2026 |
| ROB Langton Limited | Real estate | 2003 |
| ROB Page Wealth Management Ltd | Financial services | 2024 |
| ROB Utility Ltd | Construction | 2026 |
| Rob's Auto Repairs Ltd | Wholesale & retail | 2024 |
| Rob's Locums Limited | Health & social care | 2011 |
| Robel Flavour Pioneers Limited | Hospitality | 2025 |
| Rober Limited | Manufacturing | 1995 |
| Robert Barber Holdings Limited | Financial services | 2019 |
| Robert Barker Design Limited | Administrative & support | 2022 |
| Robert Hickling Consulting Limited | Information & communication | 2009 |
| Robert M Electrical Ltd | Construction | 2026 |
| Robert Price Contractors Limited | Manufacturing | 2013 |
| Robert Toulson Limited | Professional & scientific | 2018 |
| Roberta Stafford Consulting Ltd | Professional & scientific | 2021 |
| Robertosky-Driver Ltd | Transport & logistics | 2013 |
| Robertson Grant Limited | Professional & scientific | 2023 |
| Robin Construction and Environmental Services Limited | Water & waste | 2022 |
| Robin Hood Associates Ltd | Construction | 2025 |
| Robinaz Ltd | Wholesale & retail | 2025 |
| Robincroft Consulting Limited | Professional & scientific | 2021 |
| Robins Nest Landscapers Limited | Administrative & support | 2003 |
| Robins Solutions Ltd | Professional & scientific | 2025 |
| Robinson Estates Limited | Real estate | 2014 |
| Robinson Industrial Services Limited | Manufacturing | 2015 |
| Robinson Moore & Associates Ltd | Professional & scientific | 2018 |
| Robinson-Wood Investments Ltd | Real estate | 2018 |
| Robinsonsdetailing Ltd | Wholesale & retail | 2025 |
| Robogaja Limited | Administrative & support | 2025 |
| Roboteam Ltd | Manufacturing | 2009 |
| Robotics Professional Systems Ltd | Professional & scientific | 2023 |
| Robtheran Limited | Administrative & support | 2014 |
| Robust Motorcycles Ltd | Wholesale & retail | 2020 |
| Roby Transport Ltd | Transport & logistics | 2024 |
| Robyn Limited | Professional & scientific | 2020 |
| ROC20 Couriers Ltd | Transport & logistics | 2023 |
| Rocar Trans Ltd | Transport & logistics | 2014 |
| Rocbo Ltd | Wholesale & retail | 2018 |
| Roche Enterprises Limited | Real estate | 2009 |
| Roche Homes (Midlands) Limited | Construction | 2022 |
| Roche Homes Limited | Construction | 2015 |
| Rochester Vehicle Solutions Ltd | Wholesale & retail | 2024 |
| Rock and Ring Limited | Wholesale & retail | 2024 |
| Rock of Help Ltd | Wholesale & retail | 2025 |
| Rock Valley Market Ltd | Wholesale & retail | 2025 |
| Rocket Logistics Ltd | Transport & logistics | 2017 |
| Rocks CC Ltd | Professional & scientific | 2023 |
| Rocky Estates Ltd | Real estate | 2020 |
| Roco & SON Ltd | Transport & logistics | 2015 |