| Randolph Road Limited | Real estate | 2020 |
| Rapid Fitness Solutions Limited | Manufacturing | 2013 |
| Ratnam & Bavani Properties Limited | Construction | 2026 |
| Ratnam Care Home Limited | Health & social care | 2026 |
| Rayner Carpentry Limited | Construction | 2022 |
| Razzaz Ltd | Financial services | 2017 |
| RDA Properties Group Ltd | Real estate | 2026 |
| Re-Wired Academy Limited | Administrative & support | 2023 |
| Re-Wired Agency Ltd | Administrative & support | 2016 |
| Re.Nue London Limited | Other services | 2018 |
| Reando Management Ltd | Administrative & support | 2022 |
| Reandocare Ltd | Health & social care | 2021 |
| Recor Limited | Information & communication | 1979 |
| Red 10 Driving Ltd | Education | 2022 |
| Red FOX Homes Ltd | Real estate | 2024 |
| Red H Media Ltd | Information & communication | 2018 |
| Reddington Consulting Limited | Professional & scientific | 2022 |
| Redhill Student Hosting Ltd | Education | 2016 |
| Reed Associates Limited | Real estate | 2019 |
| Reges Clava Ltd | Manufacturing | 2022 |
| REM Wellbeing & Aesthetics Ltd | Other services | 2025 |
| Remes Mechanical Services Engineers Limited | Manufacturing | 2012 |
| RES Properties and Lettings Limited | Real estate | 2025 |
| Resilience Streams Limited | Administrative & support | 2016 |
| Resuscitation and Medical Consultancy Ltd | Education | 2005 |
| Revive Osteopathy Ltd | Health & social care | 2024 |
| Reylah Raelle Watkis Ltd | Extraterritorial | 2025 |
| RFS Management Limited | Manufacturing | 2017 |
| Rhodes M&E QS Limited | Professional & scientific | 2018 |
| Rhodes Property Investments Limited | Real estate | 2025 |
| RHS Site Services Ltd | Construction | 2013 |
| Rhys T Winters Ltd | Professional & scientific | 2026 |
| Riceball Consulting Limited | Information & communication | 2017 |
| Ricflo Services Limited | Construction | 2013 |
| Richard Sandy Trees Ltd | Agriculture & fishing | 2015 |
| Richard Tate Holdings Ltd | Wholesale & retail | 2012 |
| Richbusy Limited | Real estate | 2005 |
| Rikr Properties Ltd | Real estate | 2025 |
| Rivens Holdings Group Ltd | Financial services | 2023 |
| RML Consulting Ltd. | Information & communication | 2014 |
| Rmlowe Limited | Information & communication | 2016 |
| RNG Classics Limited | Administrative & support | 2024 |
| Robot Mowers Surrey Limited | Administrative & support | 2021 |
| Rockferry Limited | Wholesale & retail | 2008 |
| Rockstock Group UK Ltd | Manufacturing | 2020 |
| Rothian Ltd | Information & communication | 2018 |
| Roundwood Renovations Ltd | Construction | 2022 |
| Rowan Close (Banstead) Management Company Limited | Households | 2008 |
| ROY Smith Fciob Limited | Professional & scientific | 2024 |
| Royal Adelaide Hotel (Windsor) Limited | Hospitality | 1993 |
| RUA Andrade Cafe Limited | Hospitality | 2021 |
| RUB & Relish Limited | Manufacturing | 2024 |
| Ruddy Electrical Solutions Ltd | Construction | 2020 |
| RUR Home Development Ltd | Real estate | 2025 |
| Rusper Rest Limited | Real estate | 2025 |
| Russell & Saxon Limited | Professional & scientific | 2013 |
| Rutlish Auto Care Centre Limited | Manufacturing | 1995 |
| S. Morley Carpets & Flooring Limited | Construction | 2002 |
| Sabi IT Consultants Limited | Information & communication | 2008 |
| Sade Business Group Ltd | Construction | 2024 |
| Safehouse Property Holdings Limited | Real estate | 2017 |
| Safehouse Property Lettings Limited | Real estate | 2017 |
| Saina Commercial Properties Limited | Real estate | 2021 |
| Saina Residential Properties Limited | Real estate | 2021 |
| Salt & Stone Developments Limited | Real estate | 2023 |
| SAMA91 Limited | Hospitality | 2024 |
| SAR Electrics Ltd | Construction | 2016 |
| Sarah Gordon Property Services Limited | Real estate | 2019 |
| Sarah Gordon Property Services Zetland 2 Limited | Real estate | 2019 |
| Sarah Gordon Property Services Zetland Limited | Real estate | 2019 |
| Saunders Lettings Limited | Real estate | 2012 |
| Savvy IQ Hospitality Ltd | Professional & scientific | 2019 |
| Savvy IQ Limited | Professional & scientific | 2025 |
| SB Motorsport Consultants Ltd | Professional & scientific | 2012 |
| Scalene Consulting Limited | Professional & scientific | 2020 |
| Scott Barrington Consulting Ltd | Professional & scientific | 2016 |
| Scrubbers (UK) Cleaning Ltd | Administrative & support | 2011 |
| SD Ceramics Limited | Manufacturing | 2023 |
| Seed Media Ltd | Information & communication | 2023 |
| Seim Consulting Limited | Information & communication | 2012 |
| Send Sanctuary Ltd | Education | 2026 |
| Serafin Ltd | Construction | 2013 |
| Seven Rivershore Limited | Real estate | 2018 |
| SEW Trade Limited | Other services | 2002 |
| Seymour Window Cleaning Limited | Administrative & support | 2023 |
| Shot by Nick Photography Ltd | Professional & scientific | 2012 |
| SI Belle Health & Beauty Ltd | Other services | 2018 |
| SIA & Shaan Investments Limited | Real estate | 2020 |
| Sicily Limited | Hospitality | 2009 |
| Siefers Harrison Limited | Professional & scientific | 2010 |
| Silence Compliance Systems Limited | Administrative & support | 2025 |
| Simon Light Consulting Limited | Professional & scientific | 2015 |
| Simply Party Walls Ltd | Professional & scientific | 2024 |
| Simpsons International Removals Limited | Transport & logistics | 2019 |
| Sims & Bostock Limited | Construction | 2003 |
| Singing Treats Limited | Wholesale & retail | 2018 |
| SIX Counties Properties Limited | Real estate | 1966 |
| SJ Residential Limited | Professional & scientific | 2012 |
| SJS Investment Holdings Ltd | Real estate | 2016 |
| SJW Automation Design Ltd | Construction | 2018 |