| Red Chilly Indian Food Ltd | Hospitality | 2025 |
| Red Door Properties Limited | Real estate | 2017 |
| Redbreast Studio Ltd | Information & communication | 2012 |
| Redshift Investments Ltd | Real estate | 2017 |
| Reedham Court Residents Association Limited | Real estate | 2002 |
| Reedham Park Sports Club Limited | Arts & recreation | 1997 |
| Reedham Park Tennis Club Limited | Professional & scientific | 1908 |
| Reedham Residents Association (Flats) Limited | Households | 1982 |
| Reedham Residents Association (NO. 2) Limited | Real estate | 1981 |
| Reedham Residents Association (NO. 3) Limited | Households | 1983 |
| Regal Rides Chauffeur Ltd | Transport & logistics | 2024 |
| Regans Fight Champions Ltd | Arts & recreation | 2023 |
| Regans Retail Ltd | Arts & recreation | 2025 |
| Regent Care Services Ltd | Administrative & support | 2014 |
| Regilend Mortgages LLP | | 2022 |
| Reid and Mills Properties Ltd | Real estate | 2025 |
| Remodel YOU Limited | Professional & scientific | 2025 |
| Removecode Limited | Hospitality | 1998 |
| Remus International Limited | Real estate | 2023 |
| Renaphoria Ltd | Manufacturing | 2022 |
| Renew One Investments Limited | Financial services | 2020 |
| Resolute Electrical Services Limited | Construction | 2008 |
| RH CAD Design Limited | Construction | 2008 |
| RH20 SPV Ltd | Construction | 2018 |
| Riazthetics Ltd | Extraterritorial | 2024 |
| Ribagnac Legal & Translation Services Limited | Professional & scientific | 2010 |
| Richard Group Ltd | Construction | 2024 |
| RICHMONDSEXPRESS9 Limited | Administrative & support | 2025 |
| Ricky's (Ewell) Limited | Wholesale & retail | 2013 |
| Riddlesdown AI Ltd | Professional & scientific | 2025 |
| Riddlesdown CRE8 Limited | Education | 2019 |
| Riddlesdown Holdings Ltd | Financial services | 2026 |
| Riddlesdown Pharmacy Limited | Health & social care | 1995 |
| Ridge Interior Designs Limited | Professional & scientific | 2010 |
| Rimmerdax Limited | Manufacturing | 1973 |
| RIO Trading Limited | Wholesale & retail | 2018 |
| Rishi's Catering Ltd | Hospitality | 2022 |
| Rishi's Restaurant Limited | Hospitality | 2026 |
| River Gardens WS Ltd | Real estate | 2026 |
| Rivermere Limited | Professional & scientific | 1996 |
| Rizvi Education Ltd | Education | 2024 |
| Rizvi Enterprise Services Ltd | Information & communication | 2023 |
| Rizvi Property Holding Limited | Real estate | 2020 |
| RJ Safety Limited | Professional & scientific | 2025 |
| Rjhynesproperties Limited | Real estate | 2026 |
| RJL Construction Ltd | Construction | 2016 |
| RL Design Studio Ltd | Professional & scientific | 2021 |
| RMQ Enterprises Ltd | Real estate | 2022 |
| RN Estates Limited | Real estate | 2005 |
| RNS Digital Ltd | Wholesale & retail | 2026 |
| Robin Kaenzig Ltd | Professional & scientific | 2018 |
| Rochester Gynaecology Ltd | Health & social care | 2009 |
| Roebuck Groves Limited | Real estate | 2013 |
| Rohan & Vishan Limited | Real estate | 2020 |
| Rohm (Great Britain) Limited | Wholesale & retail | 1959 |
| ROI Trans Ltd | Transport & logistics | 2018 |
| Rolling Stone IT Limited | Information & communication | 2010 |
| Romajo Ltd | Real estate | 2017 |
| Roobs Ninfield Limited | Wholesale & retail | 2008 |
| Rookwood Avanue Limited | Real estate | 2019 |
| ROOM2 Digital Ltd | Information & communication | 2025 |
| Rooster Chicken and Fish Ltd | Hospitality | 2023 |
| Rosalee House Limited | Health & social care | 2021 |
| Rosebud Early Years Consultancy Ltd | Professional & scientific | 2023 |
| Rosewood Lodge Care Home Limited | Health & social care | 2016 |
| Route Digital Solutions Limited | Extraterritorial | 2019 |
| RP Refurb & Developments Ltd | Construction | 2025 |
| Rpts Properties Ltd | Real estate | 2023 |
| RSN UK Developments Ltd | Real estate | 2021 |
| RTG Mobile Limited | Wholesale & retail | 2025 |
| Russell Heights Management Company Limited | Households | 2006 |
| Ruthra Healthcare Limited | Health & social care | 2012 |
| Ruvey Ltd | Real estate | 2024 |
| RVT Architects Ltd | Professional & scientific | 2015 |
| RZ Consultants Ltd | Professional & scientific | 2019 |
| S Group Properties Investments Limited | Real estate | 2024 |
| S Group Properties Limited | Real estate | 2021 |
| S&K Mobile Welding Ltd | Manufacturing | 2026 |
| S&P Real Estate Limited | Real estate | 2018 |
| S&S Project Development Ltd | Households | 2021 |
| S.C Rendering Ltd | Construction | 2018 |
| S.M.A.K Consultancy Limited | Professional & scientific | 2015 |
| S5FACTION Ltd | Wholesale & retail | 2025 |
| Saap Properties Ltd | Administrative & support | 2012 |
| SAB Events Europe Ltd. | Administrative & support | 2017 |
| Sabre Fire Protection Limited | Manufacturing | 2023 |
| Saddo Limited | Health & social care | 2016 |
| Sadiber Limited | Health & social care | 2017 |
| Sadiqiyyah Education Ltd | Education | 2019 |
| SAF London Ltd | Real estate | 2023 |
| Safeena Limited | Health & social care | 2022 |
| SAI Engineering Consultants Limited | Professional & scientific | 1988 |
| SAI Partners Consulting Limited | Information & communication | 2012 |
| SAI Seva Humanity Ltd | Other services | 2021 |
| SAK Investments and Advisory Limited | Financial services | 2017 |
| Sakuti Biryani House Ltd | Hospitality | 2025 |
| Salon +M Limited | Other services | 2024 |
| Sam's Builders Ltd | Construction | 2022 |
| Samm Facilities Ltd | Administrative & support | 2025 |
| Samo's Records Ltd | Wholesale & retail | 2024 |