| Quartz Music Limited | Information & communication | 2003 |
| Quay Construction Limited | Construction | 2018 |
| Qubit HCM Ltd | Information & communication | 2021 |
| Quebec Expert Delivery Ltd | Transport & logistics | 2021 |
| Quebec Logistics Limited | Transport & logistics | 2021 |
| Queensway Flowers Ltd | Wholesale & retail | 2020 |
| Quick Emergency Electrician Ltd | Manufacturing | 2026 |
| Quickstop Limited | Information & communication | 2001 |
| Quills Document Management Limited | Administrative & support | 2019 |
| Quills FM Limited | Construction | 2014 |
| Quills Office Solutions Group Limited | Extraterritorial | 2014 |
| Quills Office Supplies Limited | Wholesale & retail | 2003 |
| Quinn Brick Pointing Ltd | Construction | 2015 |
| Quintus & Co Property Ltd | Real estate | 2026 |
| Quix Stores Ltd | Wholesale & retail | 2023 |
| Quotatis Limited | Information & communication | 2005 |
| QVA Consulting Engineers Limited | Professional & scientific | 2012 |
| Qwerty Homes Limited | Real estate | 2026 |
| R & B Systems S.E Limited | Administrative & support | 2015 |
| R & C Trading Company Limited | Hospitality | 2001 |
| R & H Scaffolding Limited | Construction | 2013 |
| R & R Roofing and Renovations Limited | Construction | 2022 |
| R & S Etherington Limited | Water & waste | 1975 |
| R B C Scaffolding Limited | Construction | 2010 |
| R C Plastering Services Ltd | Construction | 2014 |
| R Cake Limited | Manufacturing | 2026 |
| R D Solution Limited | Professional & scientific | 2005 |
| R E Chambers Ltd | Professional & scientific | 2022 |
| R F Industries Limited | Wholesale & retail | 1999 |
| R H Architects Limited | Professional & scientific | 2016 |
| R I M E a U Ltd | Extraterritorial | 2022 |
| R K M T Ducting Limited | Construction | 2005 |
| R K Sutton Food & Wine Limited | Wholesale & retail | 2017 |
| R S P Limited | Information & communication | 2004 |
| R Watson Limited | Administrative & support | 2023 |
| R Watson Property Limited | Real estate | 2025 |
| R&D Drylining Ltd | Construction | 2017 |
| R&L Consultant's Ltd | Professional & scientific | 2023 |
| R&R Sibona Ltd | Real estate | 2023 |
| R&T UK Brand Limited | Wholesale & retail | 2024 |
| R. Pashov Limited | Construction | 2008 |
| R.Il Construction Ltd | Construction | 2022 |
| R.J. Dance (Contractors) Limited | Construction | 1979 |
| R.L.Miller Building & Electrical Contractors Ltd | Construction | 2017 |
| R.S.S.T. Property Limited | Households | 2026 |
| R10TV Limited | Information & communication | 2011 |
| R369 Enterprise Ltd | Professional & scientific | 2026 |
| R4 Therapy Ltd | Health & social care | 2025 |
| RA Food Traders Limited | Hospitality | 2024 |
| Raantec Properties Limited | Real estate | 2023 |
| Raantec Systems Ltd | Information & communication | 2016 |
| Raasa Investments Ltd | Real estate | 2025 |
| Rachel Hallam Designs Limited | Professional & scientific | 2015 |
| Rack & Roll Ltd | Other services | 2024 |
| Rack Supplier Ltd | Wholesale & retail | 2012 |
| Rade Design & Build Ltd. | Construction | 2016 |
| Radha Management Limited | Real estate | 2017 |
| Radial Glow Ltd | Wholesale & retail | 2022 |
| Radiance Aesthetics & Skin Clinc Ltd | Other services | 2026 |
| Radium and Methodus Limited | Health & social care | 2022 |
| Raduga Project Management Limited | Professional & scientific | 2016 |
| Rahims PVT Ltd | Wholesale & retail | 2026 |
| Rahman Enterprises Ltd | Real estate | 2021 |
| Raidhan Clinical Services Ltd | Health & social care | 2024 |
| Rainbol Ltd | Wholesale & retail | 2020 |
| Rainbow BSB Ltd | Construction | 2019 |
| Raissa Foods Ltd | Wholesale & retail | 2025 |
| RAJ Infrastructure Solutions Limited | Information & communication | 2016 |
| Rajdip Limited | Wholesale & retail | 2019 |
| Rajp Commercial Limited | Real estate | 2025 |
| Rajsheel Limited | Hospitality | 2025 |
| RAM Consulting Limited | Professional & scientific | 1995 |
| RAM TC Ltd | Construction | 2017 |
| Rameth Ltd | Professional & scientific | 2025 |
| Ramkrish Solutions Limited | Information & communication | 2017 |
| Rana M Khan Limited | Transport & logistics | 2022 |
| Ranaham HR Services Limited | Professional & scientific | 2007 |
| Range Inspire Limited | Professional & scientific | 2018 |
| Ranshine Home Ltd | Real estate | 2022 |
| Ransom WEY Construction Limited | Construction | 2003 |
| Ranzayeb Limited | Transport & logistics | 2022 |
| Rapacity Limited | Information & communication | 2016 |
| Rapid Building Contractors Limited | Construction | 2020 |
| Rapido Ventures Limited | Other services | 2017 |
| Raptors Strike Force Limited | Arts & recreation | 2013 |
| Rasa Sayang Limited | Extraterritorial | 2001 |
| Rashid Corporations Ltd | Wholesale & retail | 2016 |
| Rashid Events Ltd | Wholesale & retail | 2019 |
| Rass Consultancy Ltd | Information & communication | 2015 |
| Raven Group Ltd | Wholesale & retail | 2019 |
| Raymanara Limited | Professional & scientific | 2023 |
| Rayprop Limited | Professional & scientific | 2016 |
| Rayprop Services Limited | Other services | 2017 |
| Raza Sana CIC | Health & social care | 2024 |
| Razaa Ltd | Wholesale & retail | 2023 |
| Razi Consultancy Ltd | Professional & scientific | 2026 |
| Razia ALI Consulting Ltd | Professional & scientific | 2025 |
| Rbba (Wimbledon) Ltd | Real estate | 2024 |
| RBS Robotev Building Solutions Ltd | Construction | 2021 |
| RBY Creative Ltd | Professional & scientific | 2026 |