| Psychiatry Associates Limited | Health & social care | 2005 |
| PT Nails Ltd | Other services | 2022 |
| Publicus Ltd. | Professional & scientific | 2006 |
| Pure Marketing Consultancy Limited | Real estate | 2007 |
| Purefuture Limited | Wholesale & retail | 2025 |
| Pyro Smiles Ltd | Health & social care | 2022 |
| Q.E.D. Castor and Wheel Co. Ltd | Administrative & support | 1999 |
| QDF Components (2000) Limited | Professional & scientific | 1969 |
| QDS Deutschland Limited | Administrative & support | 2004 |
| Qingdao Asia Sino Steel Co., Ltd | Extraterritorial | 2023 |
| Quadro DER Grossbaukasten Limited | Administrative & support | 2005 |
| Qualfab Limited | Manufacturing | 1942 |
| Quality Balustrade UK Ltd | Manufacturing | 2024 |
| Quality Bookkeeping Services Limited | Professional & scientific | 2006 |
| Quality Care Home (Midlands) Limited | Health & social care | 2006 |
| Quantity Surveying and Estimating Service Limited | Construction | 2006 |
| Quasar Industrial Fasteners Limited | Wholesale & retail | 1992 |
| Quest Construction Limited | | 1973 |
| Quick-Vision Limited | Professional & scientific | 2004 |
| Qurad Consulting Limited | Information & communication | 2013 |
| R & L Rental Limited | Real estate | 1984 |
| R & P Scaffolding Limited | Wholesale & retail | 2008 |
| R & R Services Limited | Construction | 2006 |
| R a Wire Erosion Limited | Manufacturing | 2003 |
| R Brampton Limited | Manufacturing | 2004 |
| R D Services Limited | Construction | 2006 |
| R D Techniques Limited | Manufacturing | 2006 |
| R G Engineering (Coventry) Ltd | Professional & scientific | 2003 |
| R Hancocks Watch and Clock Ltd | Wholesale & retail | 2006 |
| R Humphries Engineering Company Limited | Manufacturing | 1985 |
| R J MEW Surveying Limited | Professional & scientific | 2008 |
| R N Williams & Co Ltd | Professional & scientific | 2007 |
| R S Birmingham Ltd | Wholesale & retail | 2021 |
| R&D Cleaning Services Limited | Administrative & support | 2002 |
| R. & H. Motors Limited | Wholesale & retail | 2003 |
| R. Farmah & Co. Limited | Manufacturing | 1980 |
| R. Hunter Property Limited | Real estate | 2003 |
| R. J. Dunleavy Properties Limited | Real estate | 2004 |
| R. P. Insulation Services Limited | Manufacturing | 1999 |
| R. Paxton and Associates Limited | Professional & scientific | 2000 |
| R. Yates & Co Ltd. | Construction | 1998 |
| R.A. Lawley Limited | Wholesale & retail | 1981 |
| R.Adams Decorating Limited | Construction | 2003 |
| R.I.M.E. Limited | Professional & scientific | 2008 |
| R.J. Wholesale Distributors Limited | Wholesale & retail | 2000 |
| R.J.H. Eccles Holdings Limited | Professional & scientific | 1995 |
| Rabwell Technology Co., Limited | Manufacturing | 2023 |
| Radia Property Ltd | Real estate | 2021 |
| Radnall-Davis Limited | | 1998 |
| RAE Builders Ltd | Construction | 2024 |
| Rafiq and Iqbal Properties Ltd | Real estate | 2006 |
| Ragavan and Co Ltd | Professional & scientific | 2007 |
| Rainy Day Investments Limited | Administrative & support | 2002 |
| Raios Group Limited | Real estate | 2005 |
| RAJ Jewellers Limited | Manufacturing | 2005 |
| RAK Property Services Limited | Professional & scientific | 2000 |
| Ramsell Furnaces Limited | Extraterritorial | 1991 |
| Ramsell Thermal Equipment Limited | Professional & scientific | 1975 |
| Ramsell-Naber Limited | Manufacturing | 1985 |
| Rance Peters Design Ltd | Wholesale & retail | 2003 |
| Randall Partnership Limited | Professional & scientific | 2006 |
| Randlay Superstores Ltd | Wholesale & retail | 2002 |
| Raniya.H Ltd | Wholesale & retail | 2022 |
| Rapid Response E.R.S Limited | Construction | 2000 |
| Rapid Rubber & Plastics Limited | Manufacturing | 2001 |
| Rapid Systems Ltd | Extraterritorial | 1996 |
| Ratan Care Homes Limited | Real estate | 1994 |
| Ravenslair Limited | | 1980 |
| RAY Buys and Sells Limited | Wholesale & retail | 2001 |
| Rayton Electrical Wholesale Limited | Wholesale & retail | 1998 |
| Rayven Transport Limited | Transport & logistics | 2003 |
| RD Consultancy (UK) Ltd | Professional & scientific | 2006 |
| Rdgl Group Limited | Financial services | 2024 |
| Reatenting Catering Limited | Wholesale & retail | 2023 |
| Reca-Uk Ltd | Wholesale & retail | 1992 |
| Redbrick Mortgage Services Limited | Financial services | 2004 |
| Redcare Logistics (LGW) Limited | Transport & logistics | 2006 |
| Reddiwire Limited | Extraterritorial | 2006 |
| Redhouse Building Supplies Limited | Construction | 2004 |
| Redhouse Industrial Services Limited | Transport & logistics | 1974 |
| Redpath Style Ltd | Wholesale & retail | 2026 |
| Reece Cycles Limited | Wholesale & retail | 2000 |
| Reeve Metal Finishing Co. Limited(The) | Manufacturing | 1959 |
| Refurb (Holdings) Limited | Wholesale & retail | 2003 |
| Regalstrong Ltd | Financial services | 1996 |
| Regis Air Conditioning Limited | Construction | 2005 |
| Reload Systems Limited | Manufacturing | 1998 |
| Renewal Enterprises Limited | Other services | 2006 |
| Renley Plumbing & Heating Ltd | Construction | 1999 |
| Renown Design & Build Ltd | Real estate | 2005 |
| Renyi Trading Co., Ltd | Wholesale & retail | 2023 |
| Response Fabrications Limited | Manufacturing | 1995 |
| RG97 Ltd | Real estate | 2024 |
| Rgne Enterprises Limited | Professional & scientific | 2005 |
| Rheasys Limited | Administrative & support | 2004 |
| Rhodes & SON Limited | | 1980 |
| Richard Bennett Services Limited | Manufacturing | 1995 |
| Richard Crittall & Company Limited | Professional & scientific | 1957 |
| Richard's Kitchen Limited | Hospitality | 2005 |
| Richards and Jerrom Limited | Manufacturing | 1974 |