| Quartz Properties (Coventry) Limited | Real estate | 2015 |
| Quest 4 Alloys Limited | Wholesale & retail | 1993 |
| Quick Cart Abdulhadi Limited | Wholesale & retail | 2025 |
| Quick Haul Ltd | Transport & logistics | 2024 |
| Quilaana Ltd | Health & social care | 2006 |
| Quintonstar Limited | | 1982 |
| Quserve Quality Consultancy Ltd | Professional & scientific | 2012 |
| R & a Property Holdings Limited | Professional & scientific | 2004 |
| R & B AV Installations Limited | Manufacturing | 2012 |
| R J Decorating Limited | Construction | 2003 |
| R K Transport Services Limited | Transport & logistics | 1990 |
| R L Tree Care & Landscapes Ltd | Administrative & support | 2025 |
| R T Business Enterprises Ltd | Transport & logistics | 2025 |
| R.Edore Ltd | Wholesale & retail | 2020 |
| R.Hunt Enterprises Limited | Hospitality | 2016 |
| R/A Health Ltd | Health & social care | 2012 |
| R/S Ghuman Ltd | Wholesale & retail | 2025 |
| RA FBA Ltd | Wholesale & retail | 2026 |
| Rachaels Unisex Hair Salon Ltd | Other services | 2016 |
| RAI & RAI Ltd | Wholesale & retail | 2014 |
| Rainbow Group 65 Ltd | Hospitality | 2025 |
| RAJ Healthcare Solutions Ltd | Real estate | 2023 |
| RAJ Transport Services Ltd | Transport & logistics | 2025 |
| Rajput Builders Limited | Construction | 2022 |
| Rally DE Padel Limited | Arts & recreation | 2025 |
| Ralph Martindale (Birmingham) Limited | Extraterritorial | 1995 |
| Ralph Martindale (England) Limited | Extraterritorial | 1997 |
| Ralph Martindale (Willenhall) Limited | Extraterritorial | 1978 |
| Ralph Martindale and Company Limited | Wholesale & retail | 1900 |
| Raman Transport(Uk) Ltd | Transport & logistics | 2020 |
| Rand Services Ltd | Construction | 2024 |
| Randhawa Driver Hire Ltd | Transport & logistics | 2016 |
| Randle & Sons Property Ltd | Real estate | 2026 |
| Rango Haulage Ltd | Transport & logistics | 2025 |
| Rapid Route 24/7 Ltd | Transport & logistics | 2024 |
| Rapid Service Centres Ltd | Wholesale & retail | 2011 |
| Rapid Tower Services Limited | Construction | 2025 |
| Rashid & Co Property Management Services Ltd | Real estate | 2022 |
| Rattan Englewood Developments Ltd | Real estate | 2019 |
| Raul Sarkany Ltd | Transport & logistics | 2025 |
| Rawganics London Limited | Wholesale & retail | 2019 |
| Rayan Transport Limited | Transport & logistics | 2015 |
| Raybloc (X-Ray Protection) Limited | Administrative & support | 2000 |
| Rdtech Services Limited | Wholesale & retail | 2025 |
| RE Mortgages Midlands Ltd | Financial services | 2024 |
| Re-Carb Engineering Limited | Professional & scientific | 2013 |
| Read the Title Limited | Wholesale & retail | 2022 |
| Reality Care Investments Ltd | Real estate | 2023 |
| RECRUIT2SUITU (Mids) Limited | Administrative & support | 2016 |
| Recycle 4 Less Limited | Water & waste | 2010 |
| Redeemed Christian Church of GOD (Rccg) Fountain of Grace Parish Willenhall | Health & social care | 2025 |
| Redistrut (UK) Limited | | 1991 |
| Redstar Estates Limited | Real estate | 2001 |
| Redstones Franchise Limited | Real estate | 2010 |
| Redstones Property Limited | Real estate | 2004 |
| Refined Vintage Rides Ltd | Wholesale & retail | 2018 |
| Refuse Shine Cleaning Ltd | Administrative & support | 2026 |
| Regal Hampers and Events Ltd | Wholesale & retail | 2023 |
| Regardcatch Limited | Real estate | 1996 |
| Reginald Tildesley Limited | | 1937 |
| Rehmnaz Transport Ltd | Transport & logistics | 2025 |
| Rempa Limited | Construction | 2016 |
| Rendon Investments Limited | Real estate | 1963 |
| Rhodes Consultancy Limited | Health & social care | 2024 |
| Rhodes Technical Ltd | Professional & scientific | 2024 |
| Rhodes Thermal Insulation Ltd | Construction | 2018 |
| Richard Breeze PT Limited | Arts & recreation | 2014 |
| Richards UK Properties Ltd | Real estate | 2019 |
| Richysupplies Ltd | Construction | 2025 |
| Riff Rooms Ltd | Arts & recreation | 2016 |
| Rightbell International Ltd | Construction | 2023 |
| Riley Plastering & Maintenance Ltd | Construction | 2018 |
| Riley Street Properties Ltd | Real estate | 2024 |
| RIO Stainless Engineering Limited | Manufacturing | 1985 |
| Ripp's Recovery Services Ltd | Transport & logistics | 2025 |
| River Point Home Improvement’S Ltd | Construction | 2023 |
| RJS Fleet Services Ltd | Wholesale & retail | 2022 |
| RK and Sons Properties Ltd | Real estate | 2025 |
| RK Civil (Construction) Ltd | Construction | 2017 |
| RKJ UK Properties Limited | Real estate | 2025 |
| RKR Window Cleaning Ltd | Administrative & support | 2024 |
| Rlaautos Ltd | Wholesale & retail | 2024 |
| RM Surfacing Ltd | Construction | 2026 |
| RMT Electrical Services Limited | Construction | 2026 |
| RMT Realty Ltd | Real estate | 2025 |
| Road Lover Limited | Transport & logistics | 2024 |
| Road Warrior Express Ltd | Transport & logistics | 2025 |
| ROADFREIGHT24 Ltd | Transport & logistics | 2025 |
| Robertson Brown (Midlands) Ltd | Real estate | 2021 |
| Robertson Brown Limited | Professional & scientific | 2009 |
| Robinsons Roofing & Cladding Ltd | Construction | 2022 |
| Rockhopper Rescue & Recovery Ltd | Wholesale & retail | 2024 |
| Rockin Rita's Ltd | Hospitality | 2024 |
| Rokuwest Ltd | Health & social care | 2022 |
| Roof Hub Ltd | Households | 2025 |
| Root Force Ltd | Wholesale & retail | 2024 |
| Ropes and Slopes Limited | Agriculture & fishing | 2017 |
| Rosedale Roofing & Loft Conversion Ltd | Construction | 2025 |
| Rosehill Wines Limited | Wholesale & retail | 2025 |
| ROUTE2 Collective Ltd | Wholesale & retail | 2025 |