| Property of London Ltd | Hospitality | 2006 |
| Proud Interiors Limited | Professional & scientific | 2015 |
| Proverum UK Limited | Administrative & support | 2019 |
| Proximate Solution Ltd | Administrative & support | 2017 |
| PSQ Residents Association Ltd | Other services | 2025 |
| Purple Lion Properties Ltd | Real estate | 2022 |
| Purple Rose Group Ltd | Information & communication | 2024 |
| Q Print UK Limited | Administrative & support | 2008 |
| Qtcups Ltd | Manufacturing | 2024 |
| Quad Strategic Limited | Professional & scientific | 2019 |
| Quantum Management Group Limited | Professional & scientific | 2024 |
| Quantum Vantage Ltd. | Professional & scientific | 2016 |
| Qubiq Limited | Administrative & support | 2023 |
| Queen Anne Drive Association Limited | Households | 1971 |
| Quinn Global Advisory Ltd | Administrative & support | 2025 |
| Quintessence of Life Ltd | Health & social care | 2023 |
| R Fenwick Electrical Installations Ltd | Construction | 2019 |
| R.N.P Cleaning Service Limited | Administrative & support | 2003 |
| R.S. Agency Ltd | Administrative & support | 2014 |
| RA Solid Constructions Ltd | Construction | 2022 |
| Raise Fitness Limited | Information & communication | 2020 |
| Ramp Global Technology Ltd | Wholesale & retail | 2014 |
| Rand Cards Ltd | Wholesale & retail | 2025 |
| Rapidgen Software Limited | Information & communication | 2005 |
| Ratworks Ltd | Manufacturing | 2018 |
| Ravenscroft Motor Company Limited | Wholesale & retail | 2000 |
| Rbatavia Consulting Limited | Information & communication | 2025 |
| RC Fire Limited | Construction | 2022 |
| Rcmj Limited | Administrative & support | 2013 |
| React IT Development Limited | Information & communication | 2022 |
| Realised Ltd | Professional & scientific | 2019 |
| Reamaton Logistics Ltd | Professional & scientific | 2026 |
| Red Block 1 Limited | Real estate | 2025 |
| Red Block 2 Limited | Real estate | 2025 |
| Red Block 3 Limited | Real estate | 2025 |
| Red Blocks Limited | Financial services | 2025 |
| Red Cottage Limited | Information & communication | 2018 |
| Red Daffodil Research Limited | Professional & scientific | 2013 |
| Red Giant Projects Limited | Professional & scientific | 2001 |
| Red Lane Drive Limited | Extraterritorial | 2004 |
| Redpark Investments Limited | Financial services | 2017 |
| Redruth Gardens (Claygate) Management Limited | Households | 2004 |
| Rees Brothers (London) Limited | Real estate | 2016 |
| Rees Realty (London) Limited | Real estate | 2026 |
| Rees Residential Limited | Real estate | 2021 |
| Rees Technology Consulting Limited | Information & communication | 2006 |
| Regenplanet Solutions Ltd | Professional & scientific | 2023 |
| Reindropp Ltd | Manufacturing | 2025 |
| Relational Change Ltd | Education | 2013 |
| Relocate Estates Limited | Real estate | 2019 |
| Rely Corporate Services Limited | Professional & scientific | 2015 |
| Remake Studios Ltd | Manufacturing | 2020 |
| Renouve Ltd | Wholesale & retail | 2011 |
| Renovative Limited | Professional & scientific | 2015 |
| Rescisco Global Ltd | Administrative & support | 2017 |
| Reshape Property Management Limited | Real estate | 2026 |
| Resilience Solutions Limited | Professional & scientific | 2018 |
| Resolve Global Ltd | Professional & scientific | 2023 |
| Retail Ideas Limited | Information & communication | 2013 |
| Retail Property Consulting Limited | Professional & scientific | 2001 |
| Rewardeurope Limited | Professional & scientific | 2005 |
| Reya Limited | Professional & scientific | 2023 |
| Rezzurect Limited | Professional & scientific | 2023 |
| RFX Financial Services Limited | Financial services | 2010 |
| RGC Bookings Ltd | Arts & recreation | 2025 |
| Ribbonly Limited | Wholesale & retail | 2021 |
| Rice and Roman Limited | Real estate | 2012 |
| Richen Consulting Ltd | Professional & scientific | 2022 |
| Rimon Holding Limited | Financial services | 2018 |
| Rise Organisational Development Consultancy Ltd | Professional & scientific | 2016 |
| Riveroak Investments (UK) Limited | Financial services | 2019 |
| Riverside Tanker Chartering Limited | Transport & logistics | 1986 |
| Riverstone Building Ltd | Construction | 2019 |
| RJ Capital Partners Limited | Financial services | 2018 |
| Rkdcapital Limited | Real estate | 2019 |
| RND Ventures Limited | Information & communication | 2015 |
| Robert Clark Motors Limited | Wholesale & retail | 2021 |
| ROC Property Management Ltd | Administrative & support | 2015 |
| Rockleaze Consulting Ltd | Professional & scientific | 2025 |
| Rockport Homes (South) Limited | Real estate | 2012 |
| Rockport Homes Limited | Construction | 2011 |
| Romi Cafes Limited | Hospitality | 2026 |
| Romi Wholesale Limited | Manufacturing | 2026 |
| Roocou Consulting Limited | Public administration | 2015 |
| Roocou Properties Ltd | Real estate | 2023 |
| Roome Partners Ltd | Administrative & support | 2014 |
| Rooted in Property Limited | Real estate | 2021 |
| Roots Into Rhyme Ltd | Arts & recreation | 2025 |
| Roseberry Nominees Limited | Administrative & support | 2017 |
| Rosebriars RES. Assoc. (1) (Esher Park) Limited | Households | 1994 |
| Rosebriars RES. Assoc. (2) (Esher Park) Limited | Households | 1994 |
| Rosetta Medical Limited | Education | 2016 |
| Roshana Global Limited | Financial services | 2019 |
| Rostaq Limited | Information & communication | 2014 |
| Round Tree Development Limited | Construction | 2020 |
| Roundbridge Farm Management Company Limited | Households | 2020 |
| Rowen Residential (London) Limited | Real estate | 2025 |
| Royaal Claygate Limited | Hospitality | 2024 |
| Royal Cambridge Home Limited | Health & social care | 2008 |
| Royvon Dog Hotels & Training (Merthyr) Limited | Other services | 2014 |