| Redstone Global Capital Ltd | Financial services | 2025 |
| Redstone Property Services Limited | Professional & scientific | 2012 |
| Redwood Plumbing and Heating Ltd | Construction | 2026 |
| REG Wantling Films Ltd | Professional & scientific | 2023 |
| Regal Plus Properties Limited | Real estate | 2025 |
| Regalia Property Solutions Ltd | Construction | 2024 |
| Rehoboth Natural Fine Food Ltd. | Other services | 2016 |
| Reigate & Redhill Licensed Conveyancers Limited | Extraterritorial | 1984 |
| Reigate Automobiles Ltd | Wholesale & retail | 2021 |
| Reigate Carpet Centre Limited | Administrative & support | 2006 |
| Reigate Education Limited | Education | 2022 |
| Reigate Environmental Services Limited | Water & waste | 2010 |
| Reigate EYE Studio Ltd | Wholesale & retail | 2019 |
| Reigate on Time Ltd | Transport & logistics | 2014 |
| Reigate Removals Ltd | Transport & logistics | 2019 |
| Reigate Senior Care Limited | Health & social care | 2014 |
| Reigate Tutoring Limited | Education | 2020 |
| Reigate Wellbeing Centre Ltd | Health & social care | 2025 |
| Reilly Planning & Project Management Limited | Administrative & support | 2012 |
| Reilly's Property Limited | Real estate | 2016 |
| Relative Phase Limited | Professional & scientific | 2017 |
| Release International | Health & social care | 1980 |
| Remedial Train Services Ltd | Professional & scientific | 2026 |
| Renevo Capital Limited | Financial services | 2017 |
| Renevo Capital Partners LLP | | 2010 |
| Rengised Limited | Information & communication | 2024 |
| Rental Choice Limited | Administrative & support | 1994 |
| Reside Developments (Number Two) Ltd | Construction | 2013 |
| Resourcetwin Ltd | Information & communication | 2025 |
| Restec Flooring Limited | Construction | 2009 |
| Restore and Protect Ltd | Construction | 2021 |
| Rethymnis & Kulukundis Limited | Transport & logistics | 1922 |
| Reygate & Co Ltd | Professional & scientific | 2026 |
| Reynolds (Wimbledon) Limited | Real estate | 1937 |
| RF Healthcare Solutions Ltd | Health & social care | 2025 |
| RGA Accounting Ltd | Professional & scientific | 2005 |
| RH1 Cleaners Ltd | Other services | 2019 |
| RH2 Holdings Limited | Financial services | 2019 |
| Rhema Realtors & Logistics Ltd | Real estate | 2021 |
| Rhino Scaffolding Services Limited | Construction | 2003 |
| Rhll Investment Ltd | Wholesale & retail | 2025 |
| Rhonda Boone Communications Limited | Professional & scientific | 2014 |
| RIB EYE Engineering Limited | Construction | 2010 |
| Richard Canavan Ltd | Arts & recreation | 2016 |
| Richlock Properties Limited | Real estate | 2016 |
| Richy Electrical Services Limited | Construction | 2019 |
| Ridge Green Limited | Professional & scientific | 2020 |
| Ridgers Brothers Limited | Construction | 2019 |
| Right Ride Cars Gatwick Ltd | Transport & logistics | 2023 |
| Rightway Electrical Solutions Ltd | Construction | 2025 |
| Rightway Gutters Ltd | Construction | 2023 |
| Ringden Farm Limited | Agriculture & fishing | 1964 |
| Ringley Oak Properties Limited | Construction | 1956 |
| Ringwood Flats Management Company Limited | Households | 1983 |
| Rioland Ltd | Hospitality | 2025 |
| Rippingale Promotions Limited | Wholesale & retail | 2000 |
| Risbridger (UK) Limited | Professional & scientific | 1997 |
| Risbridger Limited | Manufacturing | 1961 |
| Rise (Management Services) Limited | Construction | 2015 |
| River Construction (Southern) Ltd | Construction | 2023 |
| RJM Capital Consulting Limited | Professional & scientific | 2026 |
| RJS Support Services Limited | Administrative & support | 2020 |
| Rkrv Homes Limited | Real estate | 2025 |
| RM Plumbing (South East) Ltd | Construction | 2019 |
| RM Plumbing (Southern) Ltd | Construction | 2026 |
| RM Search Solutions Limited | Administrative & support | 2010 |
| RM2 Music Limited | Extraterritorial | 2010 |
| Rmkh Limited | Other services | 2011 |
| RMS PIJ Holdings Limited | Wholesale & retail | 2024 |
| Rnjg Associates Ltd | Transport & logistics | 2014 |
| Road Master Gatwick Ltd | Transport & logistics | 2019 |
| Road Racing Consultants Limited | Administrative & support | 1999 |
| Road Star Gatwick Ltd | Transport & logistics | 2019 |
| Roadcraft Training Ltd | Education | 2015 |
| Roadrunners Finance Limited | Administrative & support | 2013 |
| Roadrunners Jamjars Limited | Wholesale & retail | 2024 |
| Roadrunners Taxis That Dont Cost Earth LLP | | 2017 |
| Roar Labs Ltd | Information & communication | 2018 |
| ROB Hare Design Ltd | Professional & scientific | 2018 |
| Robert Allsopp & Associates Limited | Arts & recreation | 2015 |
| Robert Charles Window Cleaning Services Ltd. | Construction | 2018 |
| Robert Kitching Ltd | Professional & scientific | 2025 |
| Robin James Developments Limited | Construction | 2013 |
| Robins Court Management Company Limited | Households | 1981 |
| Robotics in Construction Ltd | Construction | 2026 |
| Roca Padel and Wellness Ltd | Arts & recreation | 2026 |
| Rockhurst Garage Ltd | Real estate | 2020 |
| Rockshaw Homes Ltd | Real estate | 2020 |
| Roirio Limited | Wholesale & retail | 2023 |
| Romex World Limited | Information & communication | 2008 |
| Roofworks Limited | Construction | 2015 |
| Rooksbury Close Freehold Limited | Households | 2002 |
| Rooksbury Close Residents Association Limited | Households | 1987 |
| Rooster & Flame Ltd | Hospitality | 2026 |
| Rooster Shacks Ltd | Hospitality | 2026 |
| Rosehurst Ltd | Construction | 2026 |
| Roseland Consulting Limited | Professional & scientific | 2024 |
| Rosemead Close Residents Limited | Households | 2001 |
| Rosenight Limited | Professional & scientific | 2016 |
| Roshaal Limited | Hospitality | 2015 |