| Remedy for Business Ltd | Professional & scientific | 2000 |
| Remfed Investments Limited | Extraterritorial | 2004 |
| Remontoir Investments Ltd | Real estate | 2023 |
| Remontoir Management Limited | Information & communication | 2012 |
| Removals in Suffolk Ltd | Transport & logistics | 2019 |
| Renasance Limited | Construction | 2004 |
| Renascent Projects Ltd | Real estate | 2019 |
| Rendernow Limited | Information & communication | 2015 |
| Rendlesham Forest Cafe Ltd | Hospitality | 2023 |
| Renew & Drive Ltd | Transport & logistics | 2025 |
| Renewedripples Ventures Ltd | Extraterritorial | 2026 |
| Renewgen Heating Ltd | Construction | 2023 |
| Renison Ltd | Transport & logistics | 2019 |
| Renren Ltd | Hospitality | 2025 |
| Rent a FIN Limited | Wholesale & retail | 2003 |
| Rental Disrepair Claims Ltd | Professional & scientific | 2025 |
| Rental Properties Ltd | Real estate | 2017 |
| Rentmy Ltd | Information & communication | 2019 |
| Rentz (UK) Limited | Real estate | 2004 |
| Reptirad Ltd | Wholesale & retail | 2025 |
| Rescao Limited | Financial services | 2025 |
| Research, Training & Engagement Consulting Ltd | Professional & scientific | 2022 |
| Reserve Market Ltd | Wholesale & retail | 2026 |
| Reset Properties Limited | Real estate | 2021 |
| Reshape Club Limited | Arts & recreation | 2019 |
| Reshape Nutrition Limited | Administrative & support | 2023 |
| Reshape Transformations Limited | Administrative & support | 2022 |
| Reshapers Community Interest Company | Professional & scientific | 2008 |
| Resicoat Ltd | Construction | 2025 |
| Resin Master East Anglia Ltd | Construction | 2023 |
| Resin Master Ltd | Other services | 2012 |
| Resolute Financial Ltd | Financial services | 2014 |
| Resolve Personnel Ltd | Administrative & support | 2012 |
| Resolve Property Developments Ltd | Real estate | 2020 |
| Resonate Social Work Ltd | Health & social care | 2025 |
| Resource Services (Contracts) Limited | Agriculture & fishing | 2008 |
| Resovantis Materials Limited | Information & communication | 2026 |
| Restart Mobility CIC | Health & social care | 2026 |
| Restaurants Group UK Limited | Hospitality | 2026 |
| Restentis Project Systems Limited | Information & communication | 2026 |
| Restow CIC | Construction | 2023 |
| Retail Property Management a Limited | Real estate | 2025 |
| Retail Rebate Hub Limited | Wholesale & retail | 2025 |
| Retail Rewards Limited | Wholesale & retail | 2025 |
| Retail Space (Group) Limited | Wholesale & retail | 2023 |
| Retail Voyager Ltd | Wholesale & retail | 2021 |
| Retreat East Limited | Hospitality | 2004 |
| Retreat East Team Ltd | Administrative & support | 2002 |
| Retro Revived Ltd | Wholesale & retail | 2025 |
| Retro Spec Ipswich Ltd | Wholesale & retail | 2025 |
| Reuben Arthur Homes Ltd | Real estate | 2021 |
| Reubys Rags Ltd | Wholesale & retail | 2023 |
| Reva Transport Ltd | Transport & logistics | 2024 |
| Revamp Kitchens and Bathrooms Ltd | Construction | 2026 |
| Revelation Systems Limited | Information & communication | 2025 |
| Revells Warehousing & Transport Ltd | Transport & logistics | 2021 |
| Reventure Properties Ltd | Real estate | 2025 |
| Reverve Limited | Wholesale & retail | 2020 |
| Reviva Aesthetics Ltd | Other services | 2025 |
| Revive Body Beauty Limited | Other services | 2015 |
| Revive Recycling Ltd | Wholesale & retail | 2026 |
| Revloc Investments Limited | Real estate | 2023 |
| Revloc Limited | Wholesale & retail | 2005 |
| Revolution Aesthetic, Laser & Beauty Clinic Ltd | Other services | 2018 |
| Revolver Tyres Ltd | Wholesale & retail | 1977 |
| Revvive Ltd | Wholesale & retail | 2026 |
| Rewardfor Limited | Professional & scientific | 2019 |
| Reweave Systems Ltd | Information & communication | 2025 |
| Rewind Electronics Ltd | Other services | 2020 |
| Rewires Direct Ltd | Construction | 2014 |
| Rewts Limited | Administrative & support | 2014 |
| REX Delivery Ltd | Transport & logistics | 2022 |
| Rexh Properties Ltd | Construction | 2025 |
| REY Enterprise Solutions Ltd | Information & communication | 2019 |
| REY Living Group Limited | Real estate | 2026 |
| Reynolds Restorations Limited | Manufacturing | 2015 |
| RFC Lettings Ltd | Real estate | 2017 |
| RFC Services (East Anglia) Ltd | Administrative & support | 2012 |
| RFC Transport Limited | Transport & logistics | 2019 |
| RG Investment Planning Ltd | Real estate | 2017 |
| RG Plumbing & Heating (EA) Ltd | Construction | 2023 |
| RG Property Restoration & Repair Ltd | Construction | 2022 |
| RGR Transport Ltd | Transport & logistics | 2018 |
| RH & Co Consulting Limited | Extraterritorial | 2019 |
| RH & SM Properties Ltd | Construction | 2019 |
| RH Asset & Investment Co Limited | Real estate | 2025 |
| RH Scaffolding Ltd | Construction | 2024 |
| RH6 Ltd | Construction | 2025 |
| Rheeaz Emmamdeen Ltd | Administrative & support | 2017 |
| RHO Box Limited | Information & communication | 2024 |
| RHT Products Ltd | Wholesale & retail | 2020 |
| Rhynwick Ltd | Real estate | 2019 |
| Ribelo Limited | Professional & scientific | 2022 |
| Ricardo Solutions Limited | Real estate | 2018 |
| Rice Nation Limited | Wholesale & retail | 2025 |
| Richard Adam Landscapes Limited | Administrative & support | 2020 |
| Richard Andrew Hall Ltd | Extraterritorial | 1994 |
| Richard Beales Consulting Ltd | Other services | 2024 |
| Richard Boother Consultancy Ltd | Professional & scientific | 2013 |
| Richard Davies Golf Services Limited | Arts & recreation | 2022 |