| Riddhishivans Foods Ltd | Hospitality | 2005 |
| Ridgwoodetti Limited | Transport & logistics | 2025 |
| Right 4 Migrants UK Ltd | Administrative & support | 2008 |
| Ringsite Limited | Financial services | 2000 |
| Rini Properties Limited | Real estate | 2024 |
| Rivendell Services Limited | Administrative & support | 2023 |
| Rivermill Apartments Management Company Limited | Households | 1990 |
| Riverside Farm Animal Rescue CIC | Agriculture & fishing | 2024 |
| Riversley Developments Ltd | Construction | 2021 |
| RJP Sales Limited | Other services | 2018 |
| RJS Developments (Midlands) Limited | Construction | 2024 |
| RK Property (Nuneaton) Ltd | Real estate | 2024 |
| RL Building & Maintenance Ltd | Construction | 2017 |
| RLB Trailers Limited | Wholesale & retail | 2024 |
| RLH Consultancy Ltd | Administrative & support | 2021 |
| RLJ Business Solutions Limited | Administrative & support | 2020 |
| RLK Print & Embroidery Limited | Administrative & support | 2017 |
| RLP Property Developments Limited | Construction | 2025 |
| RLT Suppliers Limited | Wholesale & retail | 2014 |
| RM76 Limited | Professional & scientific | 2016 |
| RMK News & Wine Ltd | Wholesale & retail | 2019 |
| RMO Holdings Limited | Financial services | 2025 |
| RNP Engineering Ltd | Professional & scientific | 2024 |
| Roam in the Community C.I.C. | Education | 2024 |
| ROB James Photography Ltd | Professional & scientific | 2025 |
| Robert W. Stokes Ltd | Real estate | 1998 |
| Roblan Building Services Limited | Construction | 2020 |
| Robotic Installations Limited | Manufacturing | 2012 |
| Rock and Boat Services Ltd | Administrative & support | 2026 |
| Rock Ridge Renovations Ltd | Manufacturing | 2025 |
| Rocket Transport Ltd | Extraterritorial | 2019 |
| Rockfitness Ltd | Arts & recreation | 2020 |
| Rockwarm Insulation Limited | Construction | 1985 |
| ROD Barlow Digital Consultancy Ltd | Information & communication | 2020 |
| ROD Jeacock Engineering Ltd | Manufacturing | 2016 |
| Rokk Processing Ltd | Wholesale & retail | 2007 |
| Rokosz Limited | Other services | 2025 |
| Roladex Industrial Ltd | Wholesale & retail | 2025 |
| Roleon Limited | Other services | 2016 |
| Roliv Trans Ltd | Transport & logistics | 2026 |
| Romario Logistics Ltd | Transport & logistics | 2026 |
| Romsley Farm Barns Limited | Construction | 2023 |
| Romsym Transport Ltd | Transport & logistics | 2019 |
| Ronayok Limited | Real estate | 2019 |
| Ronin Drift Lounge | Arts & recreation | 2022 |
| ROO Stain Ltd | Professional & scientific | 2020 |
| ROOFLIGHTS4U Ltd | Construction | 2020 |
| Room Rescue Limited | Manufacturing | 2021 |
| Rooster Booster Ltd | Hospitality | 2024 |
| Roosterz Nuneaton Ltd | Hospitality | 2024 |
| Roplin Property Management Ltd | Households | 2018 |
| ROS (UK) Limited | Administrative & support | 2013 |
| Rose Blossom Properties Ltd | Real estate | 2016 |
| Rose Grace Consulting Ltd | Real estate | 2022 |
| Rosebud Care Services Ltd | Administrative & support | 2024 |
| Rosie Howard Academy Ltd. | Arts & recreation | 2015 |
| Ross Keysgroup Ltd | Financial services | 2025 |
| Rossa's Ice Cream Limited | Manufacturing | 2011 |
| Rotary Compressed Airflo Limited | Other services | 1993 |
| Round Wheel Transport Ltd | Transport & logistics | 2019 |
| Rowayda Kochar Ltd | Wholesale & retail | 2020 |
| Rowden Services Ltd | Agriculture & fishing | 2020 |
| Rowe Coaches Limited | Transport & logistics | 2017 |
| Rowington Croft Ltd | Agriculture & fishing | 2018 |
| Royale Skin Clinic Limited | Health & social care | 2018 |
| Rozh Fast Food Ltd | Hospitality | 2025 |
| RRS Cars Limited | Wholesale & retail | 2025 |
| RS Artworks Limited | Arts & recreation | 2025 |
| RS Food and Wine Ltd | Wholesale & retail | 2026 |
| RS Metal Polishing Ltd | Manufacturing | 2024 |
| RS Panels SVV Limited | Administrative & support | 2008 |
| RS Products Limited | Manufacturing | 2023 |
| RSB Electrical Installations Ltd | Construction | 2014 |
| RSC Facilites Ltd | Construction | 2022 |
| RT CAD & Design Limited | Professional & scientific | 2024 |
| RT Sweeper Services Limited | Manufacturing | 2010 |
| RTS Express Ltd | Transport & logistics | 2022 |
| Rtvcs IT Ltd | Manufacturing | 2025 |
| Rugveer Narwall Limited | Professional & scientific | 2015 |
| Ruling Section Ltd | Professional & scientific | 2022 |
| Rumogo Limited | Financial services | 2025 |
| Russell and Apple Group Ltd | Other services | 2020 |
| Russell Cope Limited | Real estate | 2021 |
| Russell Coyle Mortgages Ltd | Financial services | 2018 |
| Russell Dyble Limited | Administrative & support | 2016 |
| RV Rana Store Ltd | Wholesale & retail | 2025 |
| RX Haulage Ltd | Transport & logistics | 2022 |
| Rxsell Ltd | Administrative & support | 2021 |
| Ryomar Limited | Transport & logistics | 2024 |
| Rywi Ltd | Real estate | 2025 |
| RZN8 Ltd | Arts & recreation | 2025 |
| S & a Contractors Limited | Administrative & support | 2002 |
| S & L Installations Ltd | Construction | 2021 |
| S a H Property Services Limited | Manufacturing | 2020 |
| S C Electrical Midlands Ltd | Construction | 2023 |
| S Elvidge Bricklaying Contractors Limited | Construction | 1998 |
| S Gibson Solutions Limited | Manufacturing | 2009 |
| S Hayes Driving Limited | Transport & logistics | 2015 |
| S J Victors Ltd | Health & social care | 2024 |
| S K Mobiles & Gadgets Ltd | Wholesale & retail | 2023 |