| Richard Bladon and Associates Limited | Professional & scientific | 2016 |
| Richard Clarke Consultants Limited | Administrative & support | 2010 |
| Richard James Handmade Limited | Manufacturing | 2012 |
| Richard Kempner Limited | Professional & scientific | 2009 |
| Richardson & RAI Ltd | Real estate | 2017 |
| Richardson Hotels (Grosvenor) Limited | Hospitality | 2012 |
| Richardson Hotels Holdings Limited | Real estate | 2011 |
| Richardson Hotels Limited | Hospitality | 2001 |
| Richbazaar Limited | Wholesale & retail | 2024 |
| Richmond Court Flat Management Limited | Households | 2001 |
| Rick Fenton Groundworks Ltd | Construction | 2021 |
| Rickards Corporation Limited | Professional & scientific | 2024 |
| Riddings Property Limited | Construction | 2022 |
| Ride Therapeutics Limited | Professional & scientific | 2022 |
| Ridge IT Limited | Professional & scientific | 2026 |
| Ridge Medical Limited | Real estate | 2007 |
| Ridgetown Limited | Professional & scientific | 2005 |
| Ridgeway Autos Ltd | Wholesale & retail | 2024 |
| Rigby Asset Management Limited | Financial services | 2025 |
| Right on Time Watches Limited | Wholesale & retail | 2025 |
| Right Redress Ltd | Administrative & support | 2020 |
| Right Review Limited | Administrative & support | 2019 |
| Riley Weir Properties Limited | Real estate | 2019 |
| Riluk Ipco Limited | Administrative & support | 2021 |
| RIMANENTI2 Limited | Professional & scientific | 2022 |
| Ringley Park Properties Limited | Real estate | 2013 |
| Ringway Construction Ltd | Construction | 2012 |
| Ringway Golf Club Limited | Arts & recreation | 1929 |
| Rinitun Ltd | Real estate | 2014 |
| Riot Design Limited | Administrative & support | 2016 |
| RIP WMF Limited | Manufacturing | 1979 |
| Ripple Communications Ltd | Professional & scientific | 2023 |
| Ripple Education Ltd | Information & communication | 2018 |
| Risa Educational Services Limited | Education | 2024 |
| Rise & Amplify Limited | Professional & scientific | 2007 |
| Rise and Own Ltd | Professional & scientific | 2023 |
| Rise Tuition Limited | Education | 2025 |
| Risen Solutions Limited | Information & communication | 2022 |
| Risk Associates Ltd | Construction | 2013 |
| Risk Technology Limited | Wholesale & retail | 2012 |
| Riskconsult International Limited | Professional & scientific | 2026 |
| Riskleader Ltd | Financial services | 2026 |
| Ritlo Holding Ltd | Financial services | 2022 |
| River Meadow Properties Ltd | Real estate | 2021 |
| River Mercy Ltd | Construction | 2022 |
| River Street Chester Ltd | Extraterritorial | 2017 |
| Riverbank Vista Ltd | Real estate | 2024 |
| Riverdale Property Ltd | Real estate | 2017 |
| Rivermead Consulting (Manchester) Ltd | Professional & scientific | 2019 |
| Riverside House (Morpeth) Limited | Administrative & support | 2012 |
| Riverside House Propco Limited | Health & social care | 2016 |
| Riverside Walk (Garstang) Management Company Limited | Households | 2022 |
| Riverway Consulting Services Limited | Professional & scientific | 2024 |
| Rivington Property Developments Ltd | Real estate | 2016 |
| Rivora Trading Ltd | Wholesale & retail | 2020 |
| Rize Discovery (UK) Limited | Administrative & support | 2015 |
| Rizq Healthcare Ltd | Wholesale & retail | 2012 |
| RJ REC Ltd | Administrative & support | 2024 |
| RJ Watson Pharma Services Ltd | Professional & scientific | 2026 |
| RJA Investments Ltd | Households | 2024 |
| Rjdj Consultants Limited | Administrative & support | 2015 |
| RJH (UK) Limited | Administrative & support | 2013 |
| RJM Energy Limited | Professional & scientific | 2008 |
| Rjpbs Limited | Information & communication | 2017 |
| RJR Psychology Limited | Professional & scientific | 2023 |
| RJS Property Consultant Ltd | Administrative & support | 2025 |
| Rkapps Ltd | Information & communication | 2025 |
| Rkby Ltd | Hospitality | 2026 |
| RKK Engineering Limited | Professional & scientific | 2017 |
| RKM Utilities Ltd | Information & communication | 2019 |
| RKV Aesthetics Ltd | Health & social care | 2021 |
| RL Data Management Limited | Information & communication | 2014 |
| RL ERP Solutions Limited | Information & communication | 2026 |
| RLC Restorations Limited | Construction | 2011 |
| RLM Social Care Ltd | Health & social care | 2023 |
| RLY Electrical Engineering Limited | Construction | 2021 |
| RM Hunter Holdings Limited | Professional & scientific | 2023 |
| RMC & C Ltd | Professional & scientific | 2012 |
| RMD Profiles Ltd | Construction | 2022 |
| Rmenz Ltd | Health & social care | 2026 |
| RML Holdings Limited | Administrative & support | 2016 |
| RML Topco Limited | Administrative & support | 2024 |
| RMX Engineering Ltd | Professional & scientific | 2022 |
| RNB Optical Limited | Health & social care | 2015 |
| RND IT Services and Solutions Limited | Information & communication | 2018 |
| RNK Industries Ltd | Financial services | 2024 |
| RNL Limited | Real estate | 2020 |
| Rnrheatnplumb Ltd | Construction | 2025 |
| RNT Developments and Construction Ltd | Construction | 2007 |
| Ro-Am Printing Solutions Ltd | Manufacturing | 2011 |
| Roach Pilsworth Ltd | Financial services | 2024 |
| Roadware Ltd | Manufacturing | 2015 |
| Roamly Holdings Europe Ltd | Financial services | 2024 |
| Roamly UK Ltd | Financial services | 2024 |
| Roan Media Limited | Administrative & support | 2009 |
| ROB Cunningham Site Services Limited | Professional & scientific | 2024 |
| ROB Hannay Consultancy Ltd | Professional & scientific | 2020 |
| Robbani Limited | Professional & scientific | 2018 |
| Robert Allen Limited | Professional & scientific | 2012 |
| Robert James Fitted Furniture Limited | Manufacturing | 2019 |