| Relentless Entertainment Ltd | Other services | 2020 |
| Relovision Ltd | Construction | 2017 |
| Renatus Advisory Limited | Professional & scientific | 2024 |
| Renax Projects Ltd | Real estate | 2007 |
| Rendercom Ltd | Construction | 2025 |
| Renewables in Africa Limited | Professional & scientific | 2017 |
| Rent Directly Ltd | Hospitality | 2024 |
| Renu Recycling & Demolition Ltd | Water & waste | 2019 |
| Reporting Support Team Limited | Administrative & support | 2015 |
| Repro Sales and Repairs Limited | Manufacturing | 2001 |
| Requestly Ltd | Information & communication | 2019 |
| Resale Office Furniture New & Used Ltd | Wholesale & retail | 2022 |
| Resale Office Furniture UK Ltd | Wholesale & retail | 2023 |
| Resident Buzz Ltd | Real estate | 2017 |
| Resident Liaison Limited | Other services | 2023 |
| Resolve GAS and Heating Services Limited | Construction | 2023 |
| Resonate Interiors Limited | Professional & scientific | 2012 |
| Resource Partners SPV Limited | Financial services | 1999 |
| Responsive Healthcare Solutions Limited | Information & communication | 2010 |
| Restgear Ltd | Wholesale & retail | 2016 |
| Restore and Preserve Limited | Administrative & support | 2019 |
| Retailers Choice Limited | Administrative & support | 2022 |
| Retanox Limited | Professional & scientific | 2023 |
| Rethink HR Ltd | Administrative & support | 2017 |
| Retreat Fishery Ltd | Agriculture & fishing | 2016 |
| Retro Activewear Limited | Wholesale & retail | 2015 |
| Reuhil Ltd | Health & social care | 2022 |
| Revelation Art Limited | Households | 1991 |
| Revell’S Bathrooms Ltd | Construction | 2023 |
| Revelstoke Management Company Limited | Real estate | 2015 |
| Revive Cleaning and Maintenance Limited | Administrative & support | 2007 |
| Revive Hair & Skin Clinic Limited | Health & social care | 2015 |
| Revolve Marketing Agency Limited | Other services | 2010 |
| Revone Enterprises Limited | Information & communication | 2003 |
| REW Developments Limited | Construction | 2023 |
| Reworked Properties Limited | Real estate | 2018 |
| REWRITE3 Group Limited | Information & communication | 2015 |
| REX Cleaning and Maintenance Limited | Administrative & support | 2018 |
| Reynolds Consulting 2020 Limited | Professional & scientific | 2010 |
| Reynolds Salter Ltd | Real estate | 2014 |
| Rezidenzia Limited | Real estate | 2014 |
| RF Patient Safety Limited | Professional & scientific | 2024 |
| RF Plant Hire Limited | Administrative & support | 2017 |
| RFR Services Limited | Construction | 2021 |
| RG News Agent Ltd | Wholesale & retail | 2024 |
| RGL Investment Holdings Ltd | Financial services | 2023 |
| RGS Maintenance Limited | Administrative & support | 2025 |
| RGS: a Touch of Grass Limited | Administrative & support | 2016 |
| RHD Construction Group Ltd | Construction | 2022 |
| RHD Electrical Limited | Construction | 2021 |
| RHE Quality Cars Limited | Wholesale & retail | 2013 |
| RHM Solutions Ltd | Information & communication | 2006 |
| RHM UK Barbers Ltd | Other services | 2025 |
| RI Exchange Ltd | Information & communication | 2024 |
| Richborough Residential Limited | Real estate | 2020 |
| Richell Vehicle Conversions Limited | Manufacturing | 2021 |
| Richlee Motor Company Limited | Wholesale & retail | 1991 |
| Ricky's Paralegal Services Limited | Professional & scientific | 2025 |
| Rico Amor UK Ltd | Wholesale & retail | 2025 |
| Ridacare Ltd | Health & social care | 2023 |
| Ride on Road Ltd | Transport & logistics | 2022 |
| Ridgewell & Boreham Accountancy Services Limited | Professional & scientific | 2008 |
| Right Handy Vans Ltd | Wholesale & retail | 2023 |
| Rightway Fleet Maintenance Ltd | Wholesale & retail | 2025 |
| Rine Limited | Health & social care | 2020 |
| Ringbest Limited | Construction | 1993 |
| Ripeben Services Limited | Health & social care | 2012 |
| Rishton Limited | Professional & scientific | 2021 |
| Risk & Reward Limited | Administrative & support | 2023 |
| Risk Reward Ltd | Professional & scientific | 2002 |
| Rivah Ltd | Professional & scientific | 2025 |
| Rivelo Limited | Professional & scientific | 2025 |
| River Birch Interiors Ltd | Construction | 2018 |
| Riverside Place RTM Company Limited | Households | 2026 |
| Riverside Woodworks Limited | Manufacturing | 2020 |
| RJ Home Rentals Ltd | Real estate | 2026 |
| RJ Skip Hire Ltd | Water & waste | 2014 |
| RJ Waddell Services Limited | Information & communication | 2012 |
| RJH Lupine Ltd | Real estate | 2021 |
| RJL Property Investments Ltd | Real estate | 2018 |
| RJS Electrix Ltd | Construction | 2023 |
| RJS Planners Limited | Construction | 2014 |
| RK Fire Constructions Ltd | Construction | 2024 |
| Rk's Nails Ltd | Other services | 2026 |
| Rlegal Engineering Ltd | Information & communication | 2018 |
| RMC Business Solutions Ltd | Professional & scientific | 2019 |
| RMC Event Photography Ltd | Information & communication | 2018 |
| RMF Worx Limited | Wholesale & retail | 2022 |
| RMH Printing and Packaging Solutions Limited | Information & communication | 2015 |
| RMS Properies Ltd | Real estate | 2024 |
| RN Build Ltd. | Manufacturing | 2019 |
| RN ZAD Limited | Transport & logistics | 2019 |
| Roachcanha Limited | Administrative & support | 2012 |
| Roaming Stars International Limited | Administrative & support | 2025 |
| ROB Hayward Limited | Other services | 2019 |
| Robbie JAY Music Ltd | Information & communication | 2019 |
| Roberts Construction (Boxted) Limited | Administrative & support | 2019 |
| Robins Cost Consultants Limited | Professional & scientific | 2001 |
| Robo Shadow Ltd | Information & communication | 2017 |
| Robohome Limited | Real estate | 2021 |