| Rhino Shield Limited | Administrative & support | 2026 |
| Rhinoson Safety Services Ltd | Other services | 2024 |
| RHK Management Limited | Professional & scientific | 2014 |
| Rhodespot Ltd | Information & communication | 2019 |
| Rhouse UK Ltd | Households | 2021 |
| Rhsh Properties Limited | Real estate | 2023 |
| RHT Maintenance & Flooring Limited | Construction | 2021 |
| Rhythm & Hues Limited | Administrative & support | 2017 |
| RIB Shack Marine Trading Ltd | Arts & recreation | 2013 |
| Rice and Booze Ltd | Wholesale & retail | 2025 |
| Richard Mangan Limited | Professional & scientific | 2017 |
| Richard Mitham Associates Limited | Real estate | 2010 |
| Richardlittlejohn.Com Limited | Administrative & support | 2009 |
| Richardson, Pasquet & Company Limited | Professional & scientific | 1998 |
| Ricky Mead Ltd | Other services | 2014 |
| Ridgeco Limited | Hospitality | 2019 |
| Ridgeline Roof Surveys Limited | Professional & scientific | 2026 |
| Ridgeman Construction Limited | Construction | 2020 |
| Ridgestone Property Group Ltd | Real estate | 2025 |
| Ridgestone Roofing Solutions Ltd | Construction | 2017 |
| Ridgetite UK Limited | Wholesale & retail | 2025 |
| Ridita Ltd | Extraterritorial | 2025 |
| Rifleoak Ltd | Administrative & support | 2018 |
| Rifles Direct Limited | Administrative & support | 2006 |
| Riger International Limited | Wholesale & retail | 2025 |
| Right Choice Maintenance Ltd | Administrative & support | 2019 |
| Right International Limited | Administrative & support | 1995 |
| Rila Construction Ltd | Construction | 2019 |
| Ring Construction Services Ltd | Construction | 2017 |
| Rioco Ltd | Other services | 2019 |
| Riot Music Publishing Limited | Information & communication | 2005 |
| Riot Recordings Limited | Information & communication | 2004 |
| Ripe Freehold Investments Limited | Real estate | 2018 |
| Risa Property Group Limited | Real estate | 2022 |
| Rise Cool Limited | Hospitality | 2026 |
| Rising Tide Capital Ltd | Professional & scientific | 2026 |
| River and Fish Limited | Hospitality | 2019 |
| Rivercross Apartments Management Company Ltd | Households | 2024 |
| Rivercross Management Company Limited | Households | 2022 |
| Riverdore Limited | Other services | 1993 |
| Riverfield Estates Limited | Real estate | 2008 |
| Rivermead Property Investments Limited | Real estate | 2019 |
| Riverside Brewery Ltd | Manufacturing | 2015 |
| Riviera Transport & Removals Ltd | Transport & logistics | 2016 |
| Rivitswade (UK) Limited | Professional & scientific | 1991 |
| Rivitswade Limited | Manufacturing | 1982 |
| RJ Garage Equipment Ltd | Manufacturing | 2022 |
| RJM Social Work Limited | Health & social care | 2014 |
| RJT Electrical Services Ltd | Construction | 2018 |
| RKD Commercial Cleaning and Maintenance Ltd | Construction | 2022 |
| Rkew Consulting Limited | Professional & scientific | 2018 |
| RKV Global Ltd | Information & communication | 2026 |
| Rl.Com (Print) Ltd | Information & communication | 2021 |
| Rl.Com Holding Company NO 2 Ltd | Financial services | 2024 |
| Rl.Com Investments Limited | Administrative & support | 2018 |
| RLC Electrical (Southern) Ltd | Construction | 2016 |
| RLJ Consultants Limited | Professional & scientific | 2017 |
| RLM Consultancy Ltd | Information & communication | 2022 |
| RMA Yacht Projects Limited | Administrative & support | 2008 |
| Rmaero Ltd | Professional & scientific | 2025 |
| RMC Interiors Limited | Extraterritorial | 2023 |
| RMG Roofing & Cladding Limited | Construction | 2018 |
| RMS Associates London Ltd | Administrative & support | 2025 |
| Rnbt Care Limited | Construction | 2019 |
| RNF World Ltd | Public administration | 2021 |
| RNJ Customs Limited | Construction | 2018 |
| Rnrmc Enterprises Limited | Wholesale & retail | 2012 |
| Roadash Ltd | Transport & logistics | 2026 |
| Roan Management Consultants Limited | Extraterritorial | 1996 |
| Roast Pots Ltd | Hospitality | 2020 |
| ROB Leary Construction Limited | Construction | 2018 |
| ROB Rose Flooring Limited | Construction | 2025 |
| Robbins Roofing Ltd | Construction | 2021 |
| Robert Law Ltd | Professional & scientific | 2016 |
| Robert O Leary Plumbing & Heating Ltd | Construction | 2018 |
| Robin Younger Consultancy Limited | Arts & recreation | 2014 |
| Robinsons Jewellers Limited | Wholesale & retail | 2003 |
| Robustcare Limited | Health & social care | 2024 |
| Robyn Derrick Hygiene Therapy Services Ltd | Health & social care | 2014 |
| Rocav Imah Ltd | Wholesale & retail | 2025 |
| Rochefort 8 Limited | Real estate | 2013 |
| Rock Fire and Security Ltd | Administrative & support | 2015 |
| Rockenbak Limited | Construction | 2011 |
| Rocket Advisory Services Ltd | Financial services | 2025 |
| Rockingham Residents Association Limited | Households | 1978 |
| Rocks & Huches Limited | Public administration | 2024 |
| Rocouriers Ltd | Transport & logistics | 2025 |
| Rodent Air Limited | Manufacturing | 2024 |
| Rodina Homes Limited | Real estate | 2016 |
| Rodina Properties Limited | Administrative & support | 2008 |
| Rogate Catering Ltd | Hospitality | 2022 |
| Rogue Horizon Ltd | Professional & scientific | 2026 |
| Rogue Kitchen Limited | Hospitality | 2025 |
| Roialemma Ltd | Construction | 2021 |
| ROK Marsh Ltd | Real estate | 2021 |
| Roko Delivery Ltd | Transport & logistics | 2025 |
| Roko Welding Ltd | Construction | 2025 |
| Roma Foods Supermarket Limited | Hospitality | 2023 |
| Roman Press Limited | Manufacturing | 1937 |
| Romara Global Limited | Administrative & support | 2025 |