| Revive! Auto Innovations (Rugby) Ltd | Professional & scientific | 2000 |
| Revive! Auto Innovations (UK) Limited | Wholesale & retail | 2004 |
| Revive! Auto Innovations Limited | Financial services | 2004 |
| Revolution Fuels ( Rugby) Limited | Real estate | 2024 |
| Revolution Fuels Ltd | Wholesale & retail | 2010 |
| Rewarding Recycling Limited | Professional & scientific | 2011 |
| Rewmar Limited | Wholesale & retail | 2010 |
| Rewmar Wood Limited | Wholesale & retail | 2016 |
| Reynolds SAP Consulting Limited | Information & communication | 2009 |
| Rfid Limited | Extraterritorial | 2002 |
| RFK (Market Harborough) Ltd | Wholesale & retail | 2022 |
| RFP Bath Limited | Wholesale & retail | 2018 |
| RGM Taverns Ltd | Hospitality | 2023 |
| RH Prospect Limited | Professional & scientific | 2018 |
| Rheia IP Limited | Professional & scientific | 2022 |
| Rhianna Daysh Ltd | Other services | 2025 |
| RI (UK) Limited | Wholesale & retail | 2012 |
| RIA Enterprises Limited | Real estate | 2003 |
| Riacare Ltd | Health & social care | 2015 |
| Rich MAN Poor Limited | Information & communication | 2023 |
| Richard Anness Podiatry Ltd | Health & social care | 2024 |
| Richard Anness Products Ltd | Manufacturing | 2026 |
| Richard Anness Property Ltd | Real estate | 2024 |
| Richard Bullock Limited | Other services | 2008 |
| Richard Hinson Limited | Transport & logistics | 2016 |
| Richard Maze & Co Limited | Administrative & support | 2024 |
| Richard Sewell Building Ltd | Construction | 2021 |
| Richards Business Consultancy Ltd | Professional & scientific | 2018 |
| Richards Property Services Ltd | Real estate | 2015 |
| Richmond Properties Limited | Real estate | 2010 |
| Ricosta Coffee Limited | Hospitality | 2020 |
| Ricosta Limited | Financial services | 2010 |
| Ridgemount Consulting Ltd | Professional & scientific | 2012 |
| Ridhima Enterprises Ltd | Wholesale & retail | 2019 |
| Rienzo Limited | Information & communication | 2011 |
| Rift Lake Cichlids UK Ltd | Wholesale & retail | 2026 |
| RIG Plumbing and Heating Ltd | Construction | 2008 |
| Riley Court Management Company (Rugby) Limited | Real estate | 1999 |
| Rinzco Consulting Limited | Professional & scientific | 2025 |
| Rise Reform Pilates Ltd | Other services | 2024 |
| Rise Solutions Worldwide Ltd | Information & communication | 2023 |
| Rishik Infotech Limited | Information & communication | 2018 |
| Rishomes Residency Ltd | Real estate | 2025 |
| Rising Sun Properties Limited | Real estate | 2015 |
| Risk Management Safety Ltd | Public administration | 2018 |
| Rite Price Furniture Ltd | Wholesale & retail | 1994 |
| Ritson Golf Design Ltd | Professional & scientific | 2005 |
| Rivage VIN Limited | Wholesale & retail | 2026 |
| River Class Services Ltd | Manufacturing | 2021 |
| Rivera Nest Ltd | Real estate | 2025 |
| Rivermead Farm LLP | | 2021 |
| Rivermere Systems Ltd | Professional & scientific | 1996 |
| Rivers of OIL CIC | Health & social care | 2025 |
| Riverside Corner Management Company Limited | Households | 2005 |
| Riverside MC Ltd | Construction | 2025 |
| Riverside Park Properties Limited | Administrative & support | 1996 |
| RJ Services & Installation Ltd | Manufacturing | 2017 |
| RJJ Freight Europe Limited | Transport & logistics | 2013 |
| RJS Services & Development Ltd. | Construction | 2004 |
| RK Car Design Ltd | Professional & scientific | 2020 |
| Rk-Sips Design Limited | Construction | 2009 |
| RKA 18 Ltd | Wholesale & retail | 2022 |
| Rkai Property Ltd | Real estate | 2025 |
| RKP Real Estate Ltd | Real estate | 2021 |
| RL Ladele Limited | Health & social care | 2011 |
| RLD Properties Ltd | Real estate | 2019 |
| RLO Investments Ltd | Real estate | 2023 |
| RM Practitioner Services Ltd | Health & social care | 2018 |
| RM Property (Rugby) Ltd | Construction | 2022 |
| RM Property Developments (Rugby) Limited | Professional & scientific | 2013 |
| RN Houses Limited | Real estate | 2015 |
| RN Trading Ltd | Wholesale & retail | 2017 |
| RNH Assets Limited | Real estate | 2025 |
| Ro-Soma Ltd | Information & communication | 2020 |
| Road Traffic Services Ltd | Professional & scientific | 2013 |
| Roadcrew Limited | Transport & logistics | 2019 |
| Roann Homes Ltd | Real estate | 2024 |
| Roar! Cheer CIC | Arts & recreation | 2022 |
| ROB Hawley Driving Services Limited | Transport & logistics | 2019 |
| ROB Madden UK Limited | Professional & scientific | 2025 |
| Robaleks Ltd | Other services | 2020 |
| Roberson Limited | Real estate | 2021 |
| Robert Addi & Co Ltd | Administrative & support | 2023 |
| Robert Luczak Mortgage Services Limited | Financial services | 2026 |
| Robert Mitchell(Farms)Limited | Agriculture & fishing | 1962 |
| Roberta's Cleaning Co. Ltd | Administrative & support | 2025 |
| Robertos Cleaning Services Ltd | Other services | 2025 |
| Robertransport Limited | Transport & logistics | 2025 |
| Roberts and Hall Limited | Real estate | 2001 |
| Robin J Carver Limited | Professional & scientific | 2006 |
| Robothams of Rugby Limited | Construction | 2022 |
| Robotix Limited | Manufacturing | 1998 |
| Rocal Services Limited | Transport & logistics | 2004 |
| Rocheberie Controls Ltd | Professional & scientific | 2000 |
| Rock I T Recruitment Solutions Limited | Administrative & support | 2016 |
| Rock Tavern Ltd | Hospitality | 2010 |
| Rocket Russell Services Ltd | Transport & logistics | 2024 |
| Rockridge International Limited | Wholesale & retail | 2022 |
| Rockstar Harley LLP | | 2022 |
| Rocktapper Ltd | Construction | 2011 |