| Radmeade Limited | Extraterritorial | 2009 |
| Radnall Global Limited | Administrative & support | 2015 |
| Radnus Solutions Limited | Information & communication | 2010 |
| Rafe Medical Ltd | Health & social care | 2025 |
| RAH Collection Ltd | Wholesale & retail | 2026 |
| RAI Plant Ltd | Administrative & support | 2022 |
| Railway Electrical Design Ltd | Construction | 2022 |
| Rainbow Definition Limited | Information & communication | 2013 |
| Raine Accounting Services Limited | Professional & scientific | 2026 |
| Raine Design Interiors Limited | Professional & scientific | 2021 |
| Raine Lila Solutions Ltd | Administrative & support | 2025 |
| Raine Trading Ltd | Transport & logistics | 2025 |
| Rainley Consultancy Ltd | Professional & scientific | 2026 |
| Raise Building & Maintenance Limited | Construction | 2009 |
| Raising Rainbows in Roses CIC | Health & social care | 2024 |
| Rajeswari Consultancy Services Ltd | Information & communication | 2014 |
| RAK Consultancy Limited | Households | 2024 |
| Rakish Properties Ltd | Real estate | 2022 |
| RAL Commercial Services Limited | Professional & scientific | 2013 |
| Rally Engineering Division Limited | Administrative & support | 2014 |
| RAM Support Ltd | Administrative & support | 2016 |
| Rambos Fishing Gezr Ltd | Wholesale & retail | 2026 |
| Ramesh Chauhan Ltd | Professional & scientific | 2022 |
| Ramgarhia Welfare Association Birmingham (Rwab) Limited | Other services | 2015 |
| Ramor Ltd | Construction | 2023 |
| Ramsden Avenue Ltd | Real estate | 2018 |
| Rana's Property Investment Ltd | Real estate | 2025 |
| Rangemoor Living Limited | Construction | 2018 |
| Rangemoor Windows Ltd | Construction | 2013 |
| Rankup UK Ltd | Professional & scientific | 2026 |
| Rapid Access Car Keys Ltd | Wholesale & retail | 2025 |
| Rapid Cure TCS Limited | Professional & scientific | 2004 |
| Rapid Maintenance Solutions Limited | Manufacturing | 2009 |
| Rapid Models Limited | Professional & scientific | 2004 |
| Rapid Vehicle Hire Services Ltd | Administrative & support | 2018 |
| Rapida Ltd | Other services | 2023 |
| Rapiddome Ltd | Manufacturing | 2025 |
| Rapide Flooring Ltd | Construction | 2018 |
| Rascasse Homes Ltd | Real estate | 2015 |
| Rattan & Cane Ltd | Manufacturing | 2021 |
| Rattan Bidco Limited | Financial services | 2025 |
| Rattlecombe Road (Shenington) Limited | Construction | 2025 |
| Raud Developments Limited | Construction | 2023 |
| RAV Corporation Ltd | Real estate | 2024 |
| Ravco International Limited | Wholesale & retail | 1984 |
| Ravello Consulting Ltd | Professional & scientific | 2024 |
| Raven Accounting (West Midlands) Limited | Professional & scientific | 2021 |
| Ravenhill Park Management Company Limited | Households | 2016 |
| Ravenswood (Olton) Management Limited | Households | 1996 |
| Ravenwood Advisory Limited | Professional & scientific | 2026 |
| RAW Wins Ltd | Wholesale & retail | 2026 |
| RAY Construction Services Limited | Construction | 2024 |
| RAY Property Consulting and Management Services Limited | Professional & scientific | 2024 |
| RAY Property Investments Ltd | Real estate | 2020 |
| Raybould Limited | Professional & scientific | 2000 |
| Raydan Property Ltd | Real estate | 2021 |
| Raylec Electrical Limited | Construction | 2002 |
| Rayman Weiss Limited | Administrative & support | 2008 |
| Rays LAB Electronics Ltd | Wholesale & retail | 2026 |
| RAZ TAZ Property Investment Limited | Real estate | 2017 |
| Razan 2024 Ltd | Real estate | 2024 |
| Razaq Mechanics Ltd | Administrative & support | 2016 |
| Razaq Tech Ltd | Wholesale & retail | 2022 |
| RB Commerce Solution Limited | Wholesale & retail | 2026 |
| RB Global Services Ltd | Administrative & support | 2026 |
| RB Landscapes & Groundworks Ltd | Construction | 2025 |
| RB Medikal Instruments Ltd | Manufacturing | 2026 |
| RB Room Rentals Limited | Real estate | 2023 |
| RBA Maintenance Ltd | Construction | 2019 |
| RBC & SON Ltd | Construction | 2018 |
| RBH Consulting Services Ltd | Professional & scientific | 2018 |
| Rbit-Vba.Com Limited | Information & communication | 2013 |
| RBR Investments Limited | Real estate | 2018 |
| RBS Choreography Ltd | Arts & recreation | 2014 |
| RC Robotic Service Limited | Professional & scientific | 2017 |
| RCA Enterprises Community Interest Company | Other services | 2020 |
| RCH Electrical Services Limited | Construction | 2003 |
| RCH Group Ltd | Construction | 2016 |
| RCH Holdings Limited | Financial services | 2016 |
| RCS Shopfitting Ltd | Construction | 2024 |
| RDB UK Limited | Professional & scientific | 2007 |
| RDC Flooring Ltd | Construction | 2023 |
| RDD Consultancy Ltd | Administrative & support | 2007 |
| RDT Consultancy Limited | Professional & scientific | 2007 |
| RE Bodycare Ltd | Wholesale & retail | 2026 |
| RE Nest Properties Ltd | Real estate | 2024 |
| REA DE Fine Properties Ltd | Real estate | 2023 |
| Reach Property Group Ltd | Real estate | 2024 |
| REACH4COACHING Limited | Professional & scientific | 2022 |
| Reactive Metals Limited | Wholesale & retail | 2014 |
| Read and SON Limited | Construction | 2013 |
| Reaform Ltd | Construction | 2022 |
| Real Art. Real Artists LLP | | 2026 |
| Real Christmas Trees Limited | Wholesale & retail | 2010 |
| Real Clean Midlands Ltd | Administrative & support | 2016 |
| Real Life Role Models Ltd | Health & social care | 2022 |
| Real Success Ltd. | Professional & scientific | 2009 |
| Real Unique Gift Company Ltd | Wholesale & retail | 2019 |
| Realm Digital Media Ltd | Information & communication | 2024 |
| Realty Aspire Management Ltd | Real estate | 2024 |