| Radsar Limited | Professional & scientific | 2025 |
| Raecare Medical Services Ltd | Health & social care | 2025 |
| Raees Essense Ltd | Wholesale & retail | 2026 |
| Raer Kajaine Living (Homerton) Limited | Construction | 2015 |
| Raffle Pads London Ltd | Administrative & support | 2006 |
| Rafma Ltd | Construction | 2017 |
| Raftec Limited | Administrative & support | 2010 |
| Rafusho Rentals Limited | Real estate | 2023 |
| Rage Interiors Group Ltd | Construction | 2022 |
| Ragiu LOG Ltd | Administrative & support | 2025 |
| Raha International | Health & social care | 2008 |
| Rahalirail Ltd | Construction | 2018 |
| Raihan AJ Limited | Wholesale & retail | 2010 |
| Raikimax Entertainment Ltd | Professional & scientific | 2021 |
| Railway Engineering & Design Limited | Administrative & support | 2013 |
| Rainbow Gems Daycare Ltd | Health & social care | 2018 |
| Rainbow Grains Limited | Wholesale & retail | 2016 |
| Rainbow Health Resources Ltd | Real estate | 2021 |
| Raindv Ltd | Professional & scientific | 2021 |
| Rains Care Homes Ltd | Health & social care | 2026 |
| Rainscore Limited | Professional & scientific | 2013 |
| RAJ Jewellers & Sons Limited | Wholesale & retail | 2019 |
| RAJ Jewellers (Holdings) Limited | Financial services | 2021 |
| RAJ Jewellers(Uk) Limited | Wholesale & retail | 2011 |
| Raja G Newsagent and Confectionery Limited | Wholesale & retail | 2017 |
| Raja Usman Ltd | Wholesale & retail | 2025 |
| Rajan Service Station Ltd | Wholesale & retail | 2013 |
| Rajipa Ltd | Manufacturing | 2022 |
| Raket Limited | Administrative & support | 2014 |
| Rakhi Studio Limited | Wholesale & retail | 2025 |
| Ralfi Limited | Wholesale & retail | 2021 |
| Ralkin Limited | Professional & scientific | 2025 |
| RAM International Travel Limited | Administrative & support | 2015 |
| RAM Motors Edgware Limited | Wholesale & retail | 2017 |
| RAM Project Solutions Limited | Information & communication | 2015 |
| RAM Thushi Limited | Wholesale & retail | 2025 |
| Ram's Cash & Carry Ltd | Wholesale & retail | 2021 |
| Rama Contractors Ltd | Construction | 2026 |
| Ramada Stuff Ltd | Wholesale & retail | 2026 |
| Rams Property Hounslow Limited | Real estate | 2021 |
| Ramsretailhub Limited | Wholesale & retail | 2026 |
| Ramveke Builders Limited | Construction | 2003 |
| Ranamb Consultancy Limited | Other services | 2005 |
| Rando Design Ltd | Professional & scientific | 2024 |
| Ranelagh Court Management (NO. 2) Limited | Households | 1983 |
| Ranelle Limited | Professional & scientific | 2025 |
| Ranforth Limited | Professional & scientific | 2025 |
| Rani MIX Ltd | Manufacturing | 2012 |
| Rani Thai Spa Ltd | Health & social care | 2026 |
| Ranka Limited | Health & social care | 2008 |
| Ranya (Burnt Oak ) Fish Market Limited | Wholesale & retail | 2022 |
| Ranya Fishmongers Limited | Wholesale & retail | 2021 |
| Ranya Mediterranean Food Ltd | Hospitality | 2024 |
| RAO JEE Designer Ltd | Wholesale & retail | 2025 |
| Raphael Law Ltd | Professional & scientific | 2013 |
| Rapid Response Contractors Ltd | Construction | 2014 |
| Rapitex Limited | Real estate | 1994 |
| Raqa Invicta Compliance Limited | Professional & scientific | 2013 |
| Rares Construction Limited | Construction | 2024 |
| RAS Leela Investments Limited | Professional & scientific | 2015 |
| Rasgor Ltd | Hospitality | 2016 |
| Rasha Retail Limited | Wholesale & retail | 2017 |
| Rashyvee Limited | Wholesale & retail | 2021 |
| Rasok Limited | Professional & scientific | 2011 |
| Rave & Shine Ltd | Real estate | 2025 |
| Raven Elite Club Ltd | Wholesale & retail | 2025 |
| Ravine Road Limited | Real estate | 2005 |
| Ravirandal Property Services Limited | Other services | 2004 |
| Ray&B Ltd | Professional & scientific | 2022 |
| Rayan Cleaning Services Ltd | Administrative & support | 2021 |
| Rayan Products Limited | Wholesale & retail | 2015 |
| Rayaneh Limited | Information & communication | 2003 |
| Raymond & Leon Corporation Limited | Administrative & support | 2010 |
| Raymond Clifford Cleaners Limited | Administrative & support | 2025 |
| RAZELA1 Ltd | Administrative & support | 2025 |
| Razrides Ltd | Wholesale & retail | 2025 |
| Razvan Maintenance Ltd | Construction | 2018 |
| RB Handyman Home Service Ltd | Construction | 2025 |
| RB Property Group Limited | Real estate | 2022 |
| RB Suite Ltd | Real estate | 2016 |
| RBA Global Limited | Professional & scientific | 2019 |
| RBD Global Ltd | Construction | 2023 |
| RBG Land & Assets Cunningham Park Ltd | Real estate | 2025 |
| RBG Land & Assets Hide Road Limited | Real estate | 2026 |
| RBG Property Consultancy Limited | Financial services | 2024 |
| RBK Transport Ltd | Transport & logistics | 2019 |
| RC Asset Holdings Ltd | Real estate | 2026 |
| RC Grey Limited | Extraterritorial | 2006 |
| Rcac Holdings Limited | Financial services | 2024 |
| RCC Group Holdings Ltd | Financial services | 2025 |
| RCR (London) Ltd | Construction | 2021 |
| RCT Gates Ltd | Construction | 2025 |
| RD Installations Ltd | Construction | 2020 |
| Rdbs Services Ltd | Construction | 2023 |
| RDD Transport Ltd | Transport & logistics | 2019 |
| Rddhi Skyline Ltd | Real estate | 2024 |
| RDG Construct Ltd | Construction | 2018 |
| RDG Events Ltd | Hospitality | 2022 |
| RDG Foodtrucks Ltd | Hospitality | 2023 |
| Rdim Care Services Limited | Health & social care | 2024 |