| Reluxia Limited | Wholesale & retail | 2026 |
| Rembrandt Consultants Limited | Other services | 2005 |
| Remitargo Ltd | Transport & logistics | 2024 |
| Remivida Limited | Wholesale & retail | 2025 |
| Remlapdevils Limited | Financial services | 2011 |
| Removals and Transport Ltd | Transport & logistics | 2021 |
| Remstone Kitchen Limited | Hospitality | 2018 |
| Renaissance Stamford Limited | Other services | 2023 |
| Renatas Trans Services Ltd | Transport & logistics | 2015 |
| Renbuild(Uk) Ltd | Construction | 2024 |
| Render Wizards Ltd | Information & communication | 2024 |
| Rendm Ltd | Mining & quarrying | 2019 |
| Rene Transport Ltd | Transport & logistics | 2019 |
| Renegades Martial Arts Limited | Arts & recreation | 2024 |
| Renomahomes Ltd | Construction | 2020 |
| Renotrade Ltd | Wholesale & retail | 2024 |
| Renova Suppreme Ltd | Transport & logistics | 2025 |
| Renovateco Ltd | Construction | 2025 |
| Renpath Limited | Real estate | 2023 |
| Renso Services Limited | Information & communication | 2017 |
| Rent a Home (Peterborough) Ltd | Real estate | 2015 |
| Rent a Tester Ltd | Professional & scientific | 2026 |
| Rent Assured Management Ltd | Households | 2024 |
| Rentlot Ltd | Real estate | 2025 |
| Renwick Enterprises Limited | Transport & logistics | 2016 |
| Renyn Ltd | Health & social care | 2015 |
| Repair and Storage Peterborough Ltd | Transport & logistics | 2026 |
| Repair Device Services Ltd | Wholesale & retail | 2013 |
| Repeat Prescription Online Limited | Professional & scientific | 2003 |
| Repeat Prescription Order Line Limited | Wholesale & retail | 2003 |
| Reposebay Limited | Health & social care | 2026 |
| Reprieve Media CIC | Manufacturing | 2017 |
| RER Property Maintenance Ltd | Other services | 2025 |
| Reseak Ltd | Education | 2025 |
| Reside Build Ltd | Construction | 2026 |
| Resin Installations Ltd | Administrative & support | 2019 |
| RESIN8 Composite Repairs Ltd | Manufacturing | 2025 |
| Resolatum Ltd | Professional & scientific | 2024 |
| Resolute Enforcement Solutions Ltd | Administrative & support | 2024 |
| Resolute Technical Services Limited | Information & communication | 2024 |
| Resolve Recruitment Group Ltd | Administrative & support | 2024 |
| Resolveair Ltd | Professional & scientific | 2026 |
| Resqgear Ltd | Administrative & support | 2015 |
| Restored Futures CIC | Education | 2025 |
| Restorix Ltd | Administrative & support | 2025 |
| Result Training Ltd | Education | 2024 |
| Resume Service Limited | Professional & scientific | 2000 |
| Resunga Property Limited | Real estate | 2025 |
| Resyn Ltd | Construction | 2023 |
| Retail Mark Services Limited | Other services | 2014 |
| Retail Motor Law Holdings Limited | Financial services | 2022 |
| Retail Motor Law Limited | Professional & scientific | 2005 |
| Retail Network International (RNI) Limited | Other services | 2024 |
| Retail Plastix & Graphix Ltd | Manufacturing | 2001 |
| Rethink Business Advisors Ltd | Professional & scientific | 2018 |
| Retina Plus Ltd | Health & social care | 2024 |
| Retirement Line Advice Limited | Financial services | 2020 |
| Retirement Line Limited | Financial services | 2009 |
| Retrofit Parts Limited | Extraterritorial | 2013 |
| Retrospection Software Limited | Information & communication | 2006 |
| Retsila Limited | Professional & scientific | 2021 |
| Return to Love Limited | Wholesale & retail | 2023 |
| Reuben Rose (Properties) Holdings Limited | Administrative & support | 2004 |
| Reunite Retail Limited | Wholesale & retail | 2024 |
| Reus Limited | Real estate | 2022 |
| Reve Racing Company Ltd. | Arts & recreation | 1994 |
| Revelation (Grantham) Limited | Professional & scientific | 2005 |
| Revelation Content Limited | Professional & scientific | 2024 |
| Revelation Healthcare Limited | Professional & scientific | 1999 |
| Revelation Healthcare Trustees Limited | Public administration | 2000 |
| Revgoldhands Ltd | Manufacturing | 2025 |
| Revi Property Management Limited | Real estate | 2023 |
| Reviresco Solutions Limited | Professional & scientific | 2015 |
| Revival Urban Farm's Ltd | Construction | 2019 |
| Revive Motors Ltd | Wholesale & retail | 2024 |
| REVIVE3D Limited | Manufacturing | 2026 |
| Revivera Ltd | Education | 2026 |
| Revolution Clean Ltd | Administrative & support | 2025 |
| Revtech Peterborough Ltd | Wholesale & retail | 2014 |
| Rexon UK Ltd | Wholesale & retail | 2017 |
| REY Property Holdings Ltd | Real estate | 2023 |
| Reynopoly Ltd | Administrative & support | 2007 |
| Reyweddings Ltd | Information & communication | 2026 |
| RF Bespoke Ltd | Wholesale & retail | 2025 |
| RF Bespoke Tailoring Ltd | Wholesale & retail | 2024 |
| RG Recruitment Ltd | Transport & logistics | 2019 |
| RG Shop Ltd | Wholesale & retail | 2025 |
| RGH (UK) Services Ltd | Professional & scientific | 2016 |
| RGJ Kids Footwear UK Ltd | Administrative & support | 2019 |
| Rgpf Logistics Limited | Transport & logistics | 2013 |
| RH Elite Exports Limited | Wholesale & retail | 2025 |
| RHA Trustees Limited | Professional & scientific | 2014 |
| Rhab Contractors Limited | Construction | 2003 |
| Rhab Hire Limited | Wholesale & retail | 2021 |
| Rheon Properties Ltd | Real estate | 2017 |
| Rheucare International Limited | Health & social care | 2026 |
| Rhine Properties Ltd | Real estate | 2021 |
| Rhinetex United Kingdom Ltd | Wholesale & retail | 2021 |
| Rhotas Services Ltd | Information & communication | 2005 |
| Rhotas Solutions Ltd | Information & communication | 2014 |