| RHM Car Wash Ltd | Other services | 2021 |
| Rhodos Properties (NO3) Limited | Real estate | 2021 |
| Rhodos Properties (NO3) SPV2 Limited | Real estate | 2022 |
| Rhodos Properties (NO3) SPV3 Limited | Real estate | 2022 |
| Ribbit Ltd | Manufacturing | 2005 |
| Ribon Japanese Restaurant Limited | Hospitality | 1999 |
| Richard Baldwin Yachts Limited | Other services | 2011 |
| Richard Pearce Hairdressing Ltd | Other services | 2015 |
| Richmond House Management Co. (Ryde) Limited | Households | 1981 |
| Richmond Specsavers Hearcare Limited | Wholesale & retail | 2018 |
| Richmond Specsavers Limited | Wholesale & retail | 2004 |
| Richmond Visionplus Limited | Wholesale & retail | 2004 |
| Rickmansworth Specsavers Limited | Wholesale & retail | 2010 |
| Rictech Ltd | Construction | 2014 |
| Ridakeb Limited | Professional & scientific | 2019 |
| Ridge Gate Consultancy Ltd | Professional & scientific | 2025 |
| Ridgepro Roofing Specialists Ltd | Construction | 2025 |
| Ridown Capital Limited | Information & communication | 2008 |
| Ridown Group Limited | Financial services | 2005 |
| Ridown Limited | Real estate | 2015 |
| Ridown Property Limited | Real estate | 2019 |
| Rigging Works Ltd | Manufacturing | 2018 |
| Rightdrive (UK) Limited | Wholesale & retail | 2006 |
| Rightemp Ltd | Manufacturing | 2026 |
| Rigmasters (UK) Limited | Manufacturing | 2007 |
| Rihl Limited | Professional & scientific | 2011 |
| Riji International Limited | Extraterritorial | 2016 |
| Rimoo Brands Ltd | Manufacturing | 2026 |
| Rimpro-Tec Wheelbands Ltd | Manufacturing | 2018 |
| Ringwood Specsavers Hearcare Limited | Wholesale & retail | 2022 |
| Ringwood Specsavers Limited | Wholesale & retail | 2004 |
| Ringwood Visionplus Limited | Wholesale & retail | 2004 |
| Ripley Engineering Limited | Manufacturing | 2013 |
| Ripley Specsavers Limited | Wholesale & retail | 2014 |
| Ripon Specsavers Hearcare Limited | Wholesale & retail | 2026 |
| Ripon Specsavers Limited | Wholesale & retail | 2004 |
| Ripon Visionplus Limited | Wholesale & retail | 2004 |
| Ripsol Limited | Professional & scientific | 2022 |
| Rising Vibe Limited | Professional & scientific | 2017 |
| Risksolv Ltd | Information & communication | 2016 |
| Rita Saigon’S Nail and Beauty Ltd | Other services | 2019 |
| Rival Animation Limited | Professional & scientific | 2013 |
| River Farm Carp Fishery Limited | Wholesale & retail | 2024 |
| Riversdale Developments Limited | Construction | 2011 |
| Riverside Aviaries Ltd | Wholesale & retail | 2019 |
| Riverside Mews (1996) Management Company Limited | Households | 1996 |
| Riverstone Relocations Ltd | Hospitality | 2022 |
| Riverwood Stores Ltd | Wholesale & retail | 2023 |
| RIX Properties Limited | Real estate | 2018 |
| RJ Group PVT Ltd | Wholesale & retail | 2023 |
| RJC (Mechanical) Ltd | Construction | 2014 |
| RJC Electrical (Hampshire) Ltd | Construction | 2020 |
| RJC Group (Hampshire) Ltd | Real estate | 2020 |
| RJC Refrigeration & Air Conditioning Ltd | Construction | 2018 |
| RJC Technical Services Ltd | Construction | 2019 |
| RJD Civils Limited | Construction | 2021 |
| RJH Carpentry and Building Services Ltd | Construction | 2026 |
| RJK Deliveries Ltd | Transport & logistics | 2026 |
| RJM407 Maritime Consultancy Ltd | Real estate | 2019 |
| RKA Innovations Limited | Manufacturing | 2015 |
| RKS South Limited | Arts & recreation | 2020 |
| Rkwjoinery Limited | Construction | 2016 |
| RL Electrical Services Ltd | Construction | 2017 |
| RL13 Properties Ltd | Real estate | 2021 |
| RL13 Property Management Ltd | Real estate | 2022 |
| RLC Consultants Limited | Real estate | 2025 |
| RLE Security Ltd | Administrative & support | 2025 |
| RLS Hospitality Ltd | Professional & scientific | 2022 |
| RLS Pet Shop Limited | Wholesale & retail | 2025 |
| RM Maintenance Limited | Construction | 2013 |
| RM Trading Solutions Ltd | Construction | 2020 |
| RM Wellness Ltd | Wholesale & retail | 2022 |
| RMC Focus Ltd | Wholesale & retail | 2011 |
| RMC Ground Tech Limited | Construction | 2017 |
| RMC Prestige Cars Ltd | Wholesale & retail | 2025 |
| Rmsm Group Ltd | Wholesale & retail | 2018 |
| Road Race Performance Shropshire Ltd | Wholesale & retail | 2017 |
| Roast Clinical Services Limited | Health & social care | 2017 |
| Roath Construction Limited | Construction | 2018 |
| Robert Styles Limited | Professional & scientific | 2020 |
| Robin Paterson Limited | Administrative & support | 2017 |
| Robocore UK Ltd | Information & communication | 2017 |
| Robs Handyman Limited | Construction | 2022 |
| Roches CA Limited | Professional & scientific | 1999 |
| Rock Digital Ltd | Information & communication | 2025 |
| Rock Fall Company Limited | Construction | 1913 |
| Rock Pool Consultancy Ltd | Professional & scientific | 2018 |
| Rock UP Limited | Arts & recreation | 2014 |
| Rocket Repairs Limited | Information & communication | 2016 |
| Rocket Tech X Limited | Information & communication | 2020 |
| Rockram Ltd | Financial services | 2025 |
| Rockstone Tech Ltd | Information & communication | 2026 |
| Rodney Court (Gosport) Management Company Limited | Households | 1984 |
| Rodney's Club Ltd | Arts & recreation | 2026 |
| Roebuck Commercial Services Ltd | Professional & scientific | 2026 |
| Rogan Digital Limited | Information & communication | 2018 |
| Rogan Features Ltd | Information & communication | 2023 |
| Rogan Film Limited | Information & communication | 2019 |
| Rogan Holdco Limited | Financial services | 2026 |
| Rogan Productions Ltd | Information & communication | 2013 |