| Reflection Style Limited | Other services | 2018 |
| Refreshing Change Limited | Professional & scientific | 2005 |
| Regal Court NO.1 Limited | Real estate | 2000 |
| Regency Consultants Ltd | Professional & scientific | 2018 |
| Reise Interiors Ltd | Professional & scientific | 2023 |
| Reise Studio Ltd | Professional & scientific | 2022 |
| Renadale Holdings Ltd | Financial services | 2017 |
| Renadale Limited | Real estate | 1980 |
| Renadale Property Limited | Real estate | 2020 |
| Renee Weddings Ltd | Professional & scientific | 2025 |
| Renpad Ltd | Manufacturing | 2009 |
| Rentals on Go Ltd | Administrative & support | 2025 |
| Resilient Designer Ltd | Wholesale & retail | 2023 |
| Reso Mulla Limited | Hospitality | 2024 |
| Resolve Admin Services Limited | Professional & scientific | 2020 |
| Revas Interiors Ltd | Construction | 2015 |
| Reydon (Management) Company Limited | Households | 2023 |
| RG Projects Limited | Construction | 2018 |
| RGS Building Services Ltd | Construction | 2013 |
| RH Abbey Investments Ltd | Real estate | 2026 |
| RI RI Hair Limited | Wholesale & retail | 2017 |
| RI2 Consulting Limited | Information & communication | 2016 |
| Richest Bistro Ltd | Hospitality | 2023 |
| Richmond Recovery Limited | Wholesale & retail | 2007 |
| Ricky Joshua Ltd | Education | 2022 |
| Ridelink Ltd | Transport & logistics | 2025 |
| Riely Construction Ltd | Construction | 2014 |
| Ringers Rigging and Scenery Ltd | Construction | 2021 |
| Risehold Property Ltd | Real estate | 2025 |
| Risk Introductions Limited | Administrative & support | 2011 |
| River Foods Wholesale Ltd | Hospitality | 2013 |
| River Star Limited | Real estate | 2020 |
| Riverside Fish Shop Ltd | Hospitality | 2026 |
| Rjje Limited | Wholesale & retail | 2015 |
| RJM GAS Plumbing and Heating Limited | Construction | 2015 |
| RK Celisse Ltd | Construction | 2018 |
| RKR Property Services Limited | Real estate | 2015 |
| RLR Commercials Ltd | Wholesale & retail | 2023 |
| RM Visual Ltd | Professional & scientific | 2023 |
| RMA Property Limited | Real estate | 2020 |
| RMD26 Limited | Wholesale & retail | 2020 |
| RN Construction Services Limited | Construction | 2018 |
| RN Transport Services Ltd | Transport & logistics | 2024 |
| ROB Jenkins Construction Services Limited | Construction | 2023 |
| Robert Clive Kitchen Designs Limited | Manufacturing | 2004 |
| Roberto-Ocu Ltd | Professional & scientific | 2021 |
| Roberts & Co Investments Limited | Real estate | 2025 |
| Robertson Carpentry Ltd | Construction | 2022 |
| Robinson Sterling NYC Financial Services LLP | | 2006 |
| Rock Menswear Limited | Wholesale & retail | 2013 |
| Rocktower Limited | Real estate | 2025 |
| Rodinia Global Property Ltd | Real estate | 2006 |
| Rojess Services Limited | Health & social care | 2013 |
| Rold Development Limited | Construction | 2020 |
| Romuli Ltd | Construction | 2025 |
| Rooflink Industrial & Commercial Limited | Construction | 2001 |
| Rose and Co Creative Ltd | Professional & scientific | 2026 |
| Roseade Limited | Other services | 2009 |
| Rosemary Doner Ltd | Hospitality | 2024 |
| Rosemary Works EYC Limited | Education | 2006 |
| Rosemery Supermarket Ltd | Wholesale & retail | 2019 |
| Rosemoon Consultancy Ltd | Other services | 2026 |
| Rosemount Flooring (UK) Limited | Construction | 2010 |
| Roseymoon Cafe Ltd | Hospitality | 2025 |
| Roshni Enterprises Limited | Real estate | 2021 |
| Rotide TV Limited | Information & communication | 2011 |
| Roxby Place Ltd | Real estate | 2026 |
| Roxer Group Limited | Extraterritorial | 2019 |
| RS Acquisitions Ltd | Real estate | 2020 |
| RS UK Cars Ltd | Wholesale & retail | 2026 |
| RTD85 Ltd | Wholesale & retail | 2025 |
| Rublumu Ltd | Real estate | 2023 |
| Ruffdrum London Ltd | Professional & scientific | 2025 |
| Runal Limited | Wholesale & retail | 2020 |
| Rushmoor Development Partnership LLP | | 2018 |
| RVS Solution Ltd | Information & communication | 2007 |
| Ryan & Elias Holdings Ltd | Financial services | 2025 |
| Rzproducer Ltd | Information & communication | 2023 |
| S & J Shellfish London Limited | Wholesale & retail | 2014 |
| S a C 86 Ltd | Transport & logistics | 2023 |
| S Charville Accident Repairs Limited | Wholesale & retail | 2014 |
| S L & K E Dein Limited | Health & social care | 2013 |
| S R Pearce Wealth Management Ltd | Financial services | 2017 |
| S&B Roofing and Maintenance Services Ltd | Construction | 2020 |
| S&S Dunamis Ltd | Wholesale & retail | 2024 |
| S.F. Brown (Construction) Limited | Construction | 1993 |
| S.O.R. Stuff Ltd | Arts & recreation | 2017 |
| S.P. Acquisitions Limited | Administrative & support | 1995 |
| S.V.R. Buildings Ltd | Construction | 2019 |
| Saahorizon Analytics Limited | Professional & scientific | 2025 |
| SAC for Mechanical - Steel Structure - Cladding Limited | Construction | 2018 |
| Sacred Sound Healing Ltd | Health & social care | 2024 |
| SAE Electrics Limited | Construction | 2013 |
| Safe Water Systems Ltd | Construction | 2024 |
| Saif International Ltd | Other services | 2018 |
| Sail Nice Ltd | Real estate | 2024 |
| Saint Boniface Ltd | Real estate | 2018 |
| Saint Nicholas Care Services Limited | Health & social care | 2020 |
| Saisei Talent Ltd | Administrative & support | 2024 |
| SAM Bishop Creative Ltd | Arts & recreation | 2017 |