| Revive Retail Ltd | Wholesale & retail | 2025 |
| Revolution Company (Essex) Limited | Information & communication | 2008 |
| Revolutionary Trainer Ltd | Education | 2024 |
| Reward Shack Ltd | Administrative & support | 2025 |
| REX Howard Design Limited | Professional & scientific | 2017 |
| Reyansi Limited | Information & communication | 2026 |
| Reynolds Industrial Cleaning Limited | Administrative & support | 1999 |
| Reynolds Plumbing & Heating Services Limited | Construction | 2016 |
| RFB Ventures Limited | Other services | 2023 |
| RFC Electrical Limited | Construction | 2017 |
| RG41 Ltd | Wholesale & retail | 2024 |
| RGB Hifi & Video Limited | Wholesale & retail | 2000 |
| RGK Maintenance Group Limited | Construction | 2017 |
| Rgml Building Services Ltd | Construction | 2025 |
| RHD Storage Solutions Ltd | Transport & logistics | 2023 |
| Rhino Events Limited | Administrative & support | 2019 |
| Rhino-Tec Precision Ltd | Manufacturing | 2025 |
| Rhoda Property Group Ltd | Real estate | 2025 |
| RHS Holdings Limited | Manufacturing | 2023 |
| Riaki Limited | Information & communication | 2017 |
| Rianzan Construction Limited | Construction | 2019 |
| Rica Mexicana Limited | Hospitality | 2020 |
| Rication Limited | Construction | 2010 |
| Rich Kids Playground Ltd | Wholesale & retail | 2019 |
| Richard Havenga Ltd | Professional & scientific | 2024 |
| Richmond Lodge Limited | Real estate | 2013 |
| Richy Hills Ltd | Wholesale & retail | 2019 |
| Rickard Keen Limited | Professional & scientific | 2014 |
| Ricky's Properties Limited | Real estate | 2024 |
| Ridgemead Associates Ltd | Professional & scientific | 2018 |
| Right Fit Tyres and Wheels Limited | Manufacturing | 2025 |
| Rightpath Insurance Solutions Limited | Financial services | 2007 |
| Rightpath Properties Limited | Real estate | 2018 |
| Rightpath Solutions Limited | Administrative & support | 2015 |
| Rillarmani Ltd | Other services | 2025 |
| Rilogad Networks Limited | Construction | 2025 |
| RIM Plastics Holding Limited | Financial services | 2022 |
| Ringo Investment Ltd | Manufacturing | 2019 |
| RIO Comms Limited | Information & communication | 2015 |
| Ripeplantainfilms Limited | Information & communication | 2025 |
| Ripped Gym Basildon Limited | Arts & recreation | 2013 |
| Rise Creator Network Limited | Information & communication | 2026 |
| Rise Fitness Studios Limited | Arts & recreation | 2016 |
| Rishaban Traders Ltd | Wholesale & retail | 2026 |
| Rising Sun Housing Estates Limited | Real estate | 2016 |
| Rising Sun Serviced Estates Limited | Real estate | 2023 |
| Risk Harmonics Limited | Professional & scientific | 2021 |
| Riskallion Limited | Professional & scientific | 2018 |
| Riveki Limited | Wholesale & retail | 2018 |
| River Gardens Consultancy Ltd | Professional & scientific | 2015 |
| River Valley Vineyards Limited | Manufacturing | 2018 |
| Riverside Bay Limited | Health & social care | 2026 |
| RJ Gammage Contractors Ltd | Construction | 2025 |
| RJ Shipping Limited | Professional & scientific | 2003 |
| RJB Paving (U.K) Limited | Construction | 2021 |
| RJB Paving Limited | Construction | 2007 |
| RJB Vehicle Crossings Limited | Construction | 2026 |
| RJC Tech Services Ltd | Information & communication | 2012 |
| Rjdc Ltd | Construction | 2018 |
| RJH Transfers Ltd | Transport & logistics | 2023 |
| RJL Welding Limited | Construction | 2019 |
| Rjmusic&Roofing Ltd | Information & communication | 2026 |
| RJN Business Solutions Ltd | Information & communication | 2026 |
| RJN Services U.K Limited | Construction | 2020 |
| RK Logistic and Deliverys Ltd | Transport & logistics | 2015 |
| RK UK Holdings Ltd | Financial services | 2023 |
| RKM Surveying Services Limited | Professional & scientific | 2016 |
| RKR Realty Ltd | Real estate | 2024 |
| RL Capital (WSS) Limited | Administrative & support | 2018 |
| RL Caravan, Campervan, Motorhome, Fixing, Repair, Habitat Check Solution Ltd | Manufacturing | 2025 |
| RL Recovery Services Ltd | Transport & logistics | 2023 |
| RL Solutions Ltd | Information & communication | 2011 |
| RLB Vehicle Transport Ltd | Transport & logistics | 2023 |
| RLC Renovations Limited | Real estate | 2022 |
| RLC Vehicle Services Limited | Wholesale & retail | 2017 |
| RLR Accountants Limited | Administrative & support | 2013 |
| Rlsandson.Services Limited | Wholesale & retail | 2021 |
| RM Construction Management Ltd | Construction | 2025 |
| RM Home Improvements (U.K) Limited | Other services | 2021 |
| RM Home Improvements Limited | Other services | 2020 |
| RM Security Services Limited | Other services | 2018 |
| RM Tiling and Services Limited | Construction | 2024 |
| RM Williams Accountancy Limited | Professional & scientific | 2002 |
| RMD Brickworks Ltd | Construction | 2019 |
| Rmdi Ltd | Construction | 2014 |
| Rmdt Limited | Health & social care | 2018 |
| RMM Solutions Limited | Professional & scientific | 2025 |
| RMP Lifting Limited | Construction | 2025 |
| RNW (Holdings) Limited | Construction | 2004 |
| RNW Group Ltd | Financial services | 2010 |
| RO Fixing Limited | Construction | 2016 |
| Roadway Express Limited | Extraterritorial | 1998 |
| Roadway Logistics Ltd | Transport & logistics | 2025 |
| Roam Ibiza Limited | Other services | 2022 |
| Roam Medical Ltd | Health & social care | 2017 |
| Roar Film Entertainment Limited | Information & communication | 2012 |
| Roaring Pride Ventures Ltd | Financial services | 2020 |
| ROB Hinde Carpentry Limited | Construction | 2022 |
| Robatech UK Limited | Extraterritorial | 2016 |
| Robcor Ltd | Information & communication | 2024 |