| Property Principal Limited | Real estate | 1991 |
| Property With YOU Ltd | Real estate | 2024 |
| Protimbertec Limited | Extraterritorial | 2013 |
| PRS Corporate Lettings Ltd | Real estate | 2018 |
| PS Promed Ltd | Health & social care | 2025 |
| PSD Roofing Limited | Construction | 2009 |
| PSP Plumbing and Heating Contractors Limited | Construction | 2012 |
| PTH Construction Limited | Construction | 2020 |
| Pure Recycling Solutions Limited | Professional & scientific | 1998 |
| Purple Penguin Holdings Limited | Real estate | 2019 |
| Q Glazing Ltd. | Real estate | 1978 |
| Qica Limited | Professional & scientific | 2014 |
| QSR Logistics Ltd | Transport & logistics | 2010 |
| Qualitex Supplies Limited | Wholesale & retail | 1990 |
| Quality Leisure Management Limited | Professional & scientific | 1990 |
| Quazar International Limited | Manufacturing | 1995 |
| Quintain Management Solutions Limited | Administrative & support | 2016 |
| QX Bathroom Products Limited | Wholesale & retail | 1998 |
| R & R Building and Renovations Ltd | Construction | 2023 |
| R & R Walker Limited | Administrative & support | 2002 |
| R&K Psychology Services Ltd | Health & social care | 2018 |
| R-Stone Capital Ltd | Financial services | 2025 |
| R.Brown Haulage Limited | Construction | 2024 |
| R2D Group Limited | Wholesale & retail | 2024 |
| RA Trans Ltd | Transport & logistics | 2020 |
| RAC Forestry Ltd | Administrative & support | 2016 |
| Race and Film Ltd | Wholesale & retail | 2019 |
| Radeli Ltd | Transport & logistics | 2021 |
| Rafferty and Pickard Ltd | Real estate | 2020 |
| RAK Catering Limited | Hospitality | 2017 |
| Rana Venture Limited | Real estate | 2018 |
| Randall Ceramics Limited | Construction | 2019 |
| Randall Construction Ltd | Construction | 2016 |
| Randt International Ltd | Administrative & support | 2023 |
| Range Installations Limited | Wholesale & retail | 2001 |
| Ransford Consulting Ltd | Professional & scientific | 2022 |
| Rapid Paint and Repairs Ltd | Wholesale & retail | 2024 |
| Rbve Contracts Limited | Construction | 1988 |
| Rbve Limited | Extraterritorial | 2009 |
| RCL Homes Limited | Real estate | 2022 |
| RDC Garden Construction Limited | Construction | 2015 |
| RDC Landscapes Limited | Administrative & support | 2014 |
| Red Bull Eccles Ltd | Hospitality | 2026 |
| Red Cube Advertising Ltd | Professional & scientific | 2017 |
| Red Cube Services Ltd | Administrative & support | 2018 |
| Redhill Motors (Maidstone) Ltd | Wholesale & retail | 2023 |
| Relme Limited | Information & communication | 2008 |
| Rentavent Limited | Extraterritorial | 2015 |
| Rentavent Properties LLP | | 2012 |
| Revitalise Commercial Consultancy Limited | Professional & scientific | 2026 |
| Revitalise Engineering Services Limited | Construction | 2025 |
| Revolutionary Protective Solutions Limited | Manufacturing | 2012 |
| Rewrite Your Story Limited | Health & social care | 2017 |
| Reynard Cruises Limited | Transport & logistics | 2025 |
| RF Fire and Security Limited | Administrative & support | 2020 |
| RF Painting Contractors Limited | Construction | 2009 |
| Richard Caine Limited | Professional & scientific | 2020 |
| Richard Smith Forestry Limited | Administrative & support | 2003 |
| Richardson Property Services Limited | Construction | 2010 |
| Richings Park Developments Ltd | Construction | 2022 |
| Richings Park Property Co Ltd | Real estate | 2019 |
| Ridge Crest Cleaning Limited | Administrative & support | 1994 |
| Ridge Crest Holdings Limited | Financial services | 2021 |
| Ridge Crest Support Services Limited | Administrative & support | 2005 |
| RKB Property Services Limited | Other services | 2017 |
| RM Bentley Property Limited | Financial services | 2022 |
| Roadstone Limited | Water & waste | 2024 |
| ROB Harvey Holdings Limited | Hospitality | 2025 |
| Roberts Tree Care Ltd | Agriculture & fishing | 2019 |
| Robertsden Ltd. | Real estate | 2017 |
| Rosemont Creative House Ltd | Professional & scientific | 2025 |
| Rosy Art Ltd | Construction | 2020 |
| Roundrose Associates Limited | Professional & scientific | 1996 |
| Roundwood Solutions Ltd | Administrative & support | 2023 |
| ROW2GROW Fitness Ltd | Manufacturing | 2013 |
| Rowan Grove Therapeutics Ltd. | Health & social care | 2026 |
| Royal British Veterans Enterprise Ltd. | Manufacturing | 1919 |
| Royalstone Limited | Construction | 1996 |
| Rpd-Shakespear RD Limited | Construction | 2023 |
| RPS Security Solutions Limited | Administrative & support | 2016 |
| RR Group Holdings Ltd | Financial services | 2021 |
| RSA Environmental Health Limited | Administrative & support | 1996 |
| RSH Marine Limited | Wholesale & retail | 2025 |
| Rubicon Property (Archers) Limited | Real estate | 2021 |
| Rubicon Property (Ellison) Limited | Real estate | 2013 |
| Rubicon Property (Heber) Limited | Real estate | 2014 |
| Rubicon Property (Marsham) Limited | Real estate | 2016 |
| Rubicon Property (Norfolk House) Limited | Real estate | 2013 |
| Rubicon Property (Shrubbery) Limited | Real estate | 2012 |
| Ruby Macaw Ltd | Wholesale & retail | 2021 |
| Ruck E-Bikes Ltd | Other services | 2018 |
| Russell Roofing Partnerships Limited | Construction | 2014 |
| Russell Roofing Services Limited | Construction | 2021 |
| Russell Smith F & B Limited | Wholesale & retail | 2017 |
| Rvsh Estate Agents Limited | Real estate | 2025 |
| RVT Group Holdings Limited | Financial services | 2021 |
| RVT Group Limited | Manufacturing | 2012 |
| Ryan & Sons Construction Limited | Construction | 2021 |
| Rymax Capital Limited | Financial services | 1996 |
| Rymax Deauville Limited | Real estate | 2004 |