| Resilient Residential Care Ltd | Health & social care | 2018 |
| Respect Agencies Ltd | Information & communication | 2025 |
| Restclock Limited | Other services | 2001 |
| RESTORE2NATURE Ltd | Manufacturing | 2020 |
| Revive Accident Solutions Ltd | Professional & scientific | 2025 |
| RG Bros Ltd | Construction | 2025 |
| RG Windows & Doors Ltd | Construction | 2025 |
| RH Solutions WM Ltd | Wholesale & retail | 2025 |
| Rham Properties Limited | Construction | 2026 |
| Rhitu MP Limited | Health & social care | 2010 |
| Richmond (UK) Limited | Water & waste | 2005 |
| Richmond Court Nursing Home Limited | Health & social care | 2004 |
| Richmond DA Investments Ltd | Health & social care | 2022 |
| Richmond Practice Limited | Health & social care | 2022 |
| RIF Transport Ltd | Transport & logistics | 2025 |
| Right Oven Cleaning Limited | Administrative & support | 2019 |
| Right Way Support Limited | Health & social care | 2021 |
| Rightcare 247 Limited | Health & social care | 2016 |
| Rights & Equality Sandwell | Other services | 2004 |
| Rights Distribution Ltd | Information & communication | 2025 |
| Rights Lets Shred Limited | Water & waste | 2006 |
| Riin Ltd | Wholesale & retail | 2021 |
| Ringmaster Boxing Rings Ltd | Arts & recreation | 2020 |
| RIO - Seth Limited | Health & social care | 2022 |
| Riolla Limited | Wholesale & retail | 2013 |
| Rise Realty Ltd | Real estate | 2025 |
| River Solutions Ltd | Construction | 2020 |
| Riyaaz Ltd | Wholesale & retail | 2024 |
| Riytec Motors Ltd | Wholesale & retail | 2026 |
| Rizwan Car Hire Ltd | Administrative & support | 2025 |
| RJ Const Ltd | Construction | 2025 |
| RJ Purpose Consultancy Ltd | Professional & scientific | 2026 |
| RK Health Solutions Limited | Wholesale & retail | 2012 |
| RK Logistics U.K. Limited | Transport & logistics | 2025 |
| Rksb Holdings Ltd | Real estate | 2023 |
| RM Hayer Properties Ltd | Real estate | 2023 |
| RM Legal & Professional Services Ltd | Professional & scientific | 2022 |
| RMD Solutions Ltd | Construction | 2020 |
| RMD Technology Ltd | Information & communication | 2020 |
| RMG Associates Ltd | Administrative & support | 2021 |
| RMG Installations Ltd | Administrative & support | 2026 |
| RMJ PUB Limited | Hospitality | 2025 |
| Rmka Limited | Construction | 2019 |
| RMP Transport Ltd | Transport & logistics | 2020 |
| RMS Solutions WM Ltd | Other services | 2023 |
| RN Business Services Ltd | Professional & scientific | 2020 |
| Rnmo Ltd | Education | 2025 |
| RNS Optical Ltd | Health & social care | 2017 |
| RNS WAX OFF Ltd | Other services | 2016 |
| Roastery Catering WM Ltd | Hospitality | 2026 |
| Robbie's Fishmongers Ltd | Wholesale & retail | 2018 |
| Robe Solutions Services Ltd | Administrative & support | 2018 |
| Robert Lucas Ltd | Households | 2023 |
| Robert Painting and Decorating Ltd | Construction | 2023 |
| Robinson Pattern Equipment Limited | Manufacturing | 1983 |
| Robu Construction Ltd | Construction | 2020 |
| Rogueyeild Limited | Wholesale & retail | 2026 |
| Rolf Schwarz Ltd | Information & communication | 2010 |
| Rolfe Street ARC Ltd | Wholesale & retail | 2013 |
| Rollform Sections Limited | Extraterritorial | 1984 |
| Rolling Stone Retail Ltd | Wholesale & retail | 2025 |
| Romco Logistics Ltd | Administrative & support | 2021 |
| Roop Boutique Ltd | Other services | 2016 |
| Roopreet Properties Ltd | Real estate | 2016 |
| Rose C F Limited | Other services | 2016 |
| Ross News Ltd | Wholesale & retail | 2025 |
| Royale Car Wash Ltd | Administrative & support | 2022 |
| Royale England Limited | Wholesale & retail | 2025 |
| Royals Solicitors Ltd | Professional & scientific | 2017 |
| Royce Logistics UK Ltd | Transport & logistics | 2018 |
| Rozies Cupcakes Ltd | Manufacturing | 2023 |
| RP Aluminium & Composite Doors Ltd | Manufacturing | 2026 |
| RP Residential Holdings Ltd | Real estate | 2024 |
| RPM Analogue Audio Ltd | Wholesale & retail | 2021 |
| Rpss Beauty Limited | Other services | 2025 |
| Rroshi Ltd | Construction | 2025 |
| Rroyel's Beauty Ltd | Other services | 2024 |
| RS Building Maintenance Ltd | Construction | 2026 |
| RS Midlands Ltd | Transport & logistics | 2024 |
| RS Visuals Ltd | Professional & scientific | 2024 |
| RSA Airline Transfers Ltd | Transport & logistics | 2025 |
| RSB Plumbing and Heating Services WM Ltd | Construction | 2026 |
| Rsgg Ltd | Transport & logistics | 2025 |
| RSM Travel Ltd | Transport & logistics | 2024 |
| Rsmm Property Ltd | Real estate | 2025 |
| RSS Properties (Birmingham) Ltd | Real estate | 2023 |
| RST Financial Services Ltd | Financial services | 2019 |
| Rsuproperties Limited | Financial services | 2022 |
| Rthu Ltd | Construction | 2024 |
| RTY Logistics Ltd | Transport & logistics | 2024 |
| Ruby Kitchens & Bedrooms Ltd | Construction | 2021 |
| Rugby News WM Ltd | Wholesale & retail | 2025 |
| Rumasia Fashion Limited | Wholesale & retail | 2024 |
| Rumiali Ltd | Wholesale & retail | 2025 |
| Ruperts Ice Cream Ltd | Hospitality | 2024 |
| Rupi Contractors Ltd | Construction | 2026 |
| Russell's Coaching Limited | Education | 2023 |
| RV Internal Wall Solutions Ltd | Construction | 2024 |
| Rvira Ltd | Wholesale & retail | 2020 |
| RW Oral Surgery Limited | Health & social care | 2015 |