| Reina-Mora Limited | Information & communication | 2023 |
| Reinaldo Transport Ltd | Transport & logistics | 2025 |
| Reinas Hair Salon Limited | Other services | 2025 |
| Reis 68 Ltd | Hospitality | 2025 |
| Reis Bristol Limited | Real estate | 2017 |
| REJ Consulting Ltd | Professional & scientific | 2011 |
| Rejoovista Ltd | Professional & scientific | 2024 |
| Rejuvenation Aesthetics Ltd | Other services | 2009 |
| Rekcut Retail Ltd | Wholesale & retail | 2024 |
| Rekh International Limited | Wholesale & retail | 2020 |
| Rekoko Limited | Manufacturing | 2024 |
| Rekount Limited | Professional & scientific | 2024 |
| Relaa Limited | Other services | 2026 |
| Relating Minds Limited | Professional & scientific | 2020 |
| Relational Bodywork Ltd | Education | 2022 |
| Relationship Works Limited | Health & social care | 2004 |
| Relativity Global UK Limited | Information & communication | 2026 |
| Relay Digital Ltd | Professional & scientific | 2017 |
| Relay Leisure Ltd | Hospitality | 2015 |
| Relet Ready Limited | Administrative & support | 2026 |
| Relevay International Ltd | Information & communication | 2023 |
| Relex Logistics UK Limited | Transport & logistics | 2025 |
| Reliability Management Limited | Professional & scientific | 2015 |
| Reliable Property Invest Ltd | Real estate | 2021 |
| Reliable Remaps Ltd | Wholesale & retail | 2025 |
| Reliance Personnel Limited | Administrative & support | 2016 |
| Reliance Trustees UK Limited | Professional & scientific | 2014 |
| Reliance Ultimate Services Ltd | Administrative & support | 2025 |
| Reliant Homecare Ltd | Health & social care | 2025 |
| Reliebling Ltd | Health & social care | 2026 |
| Relion Investments 2 Ltd | Real estate | 2022 |
| Relion Investments Ltd | Real estate | 2021 |
| Relion Limited | Real estate | 2017 |
| Relish Video Production Limited | Information & communication | 2012 |
| Relm Industries LLP | | 2024 |
| Reltrust Limited | Real estate | 1999 |
| Rely International Limited | Wholesale & retail | 2008 |
| Relyon Cleaning Services Ltd | Extraterritorial | 2004 |
| Relyon Guarding & Security Services Ltd | Administrative & support | 2004 |
| Relyon Safety Services Limited | Other services | 2017 |
| Relyon Services Ltd | Administrative & support | 2009 |
| REM Event Holdings Limited | Financial services | 2022 |
| REM Investments Limited | Financial services | 2018 |
| REM Property Management Ltd | Real estate | 2022 |
| REM PUB Management Ltd | Hospitality | 2023 |
| Remanufactured Engines U.K Ltd | Wholesale & retail | 2026 |
| Remat Ventilation Ltd | Wholesale & retail | 2012 |
| Remcorp Limited | Arts & recreation | 2024 |
| Remedial Handyman Building and Maintenance Ltd | Administrative & support | 2011 |
| Remedy Label Services Ltd | Information & communication | 2018 |
| Remitara Technologies Limited | Financial services | 2025 |
| Remitix Finance Limited | Administrative & support | 2022 |
| Remitix Limited | Administrative & support | 2004 |
| Remkat Ltd | Real estate | 2026 |
| Remnant and Roll Limited | Manufacturing | 2024 |
| Remnant Christian Network Bristol Ltd | Other services | 2026 |
| Remoda Building Services Limited | Construction | 2023 |
| Remoda Property Limited | Construction | 2023 |
| Remora Investments Limited | Financial services | 2026 |
| Remos Barbers Limited | Other services | 2008 |
| Remote & Human Ltd | Extraterritorial | 2024 |
| Remote Adventures Limited | Administrative & support | 2013 |
| Remote Inclusion Ltd | Other services | 2026 |
| Remote Ropes Ltd | Information & communication | 2019 |
| Remote Surveillance Ltd | Administrative & support | 2015 |
| Remote Surveillance Monitoring Limited | Administrative & support | 2016 |
| Remotemethod Limited | Transport & logistics | 1996 |
| Removals Plus Ltd | Professional & scientific | 2024 |
| Remson Construction Ltd | Real estate | 2026 |
| Remtia Technologies Limited | Information & communication | 2014 |
| Remy's Crafts Ltd | Extraterritorial | 2022 |
| Rena U.K Ltd | Hospitality | 2021 |
| Renaissance Care Homes Limited | Professional & scientific | 2007 |
| Renaissance Collective Ltd | Financial services | 2019 |
| Renature Reconnect CIC | Professional & scientific | 2025 |
| Rence Ltd | Real estate | 2021 |
| Rencol Components Limited | Wholesale & retail | 2009 |
| Rendac Packaging Solutions Limited | Manufacturing | 2001 |
| Rendahouse Limited | Administrative & support | 2014 |
| Rendering Bristol Ltd | Construction | 2024 |
| Rendex (South West) Limited | Construction | 2009 |
| Rendezvous Solutions Limited | Information & communication | 2021 |
| Renegade Allstars CIC | Arts & recreation | 2024 |
| Renegade Reformer Ltd | Health & social care | 2021 |
| Renegade-Uk Limited | Wholesale & retail | 2018 |
| Renegade-Uk Marketing Limited | Hospitality | 2019 |
| Reneva Limited | Professional & scientific | 2017 |
| Renew and Restore Bristol Ltd | Construction | 2025 |
| Renew Building Limited | Construction | 2015 |
| Renew Consult Limited | Professional & scientific | 2012 |
| Renew Legal Limited | Professional & scientific | 2012 |
| Renewable Energy & Environment Limited | Construction | 2010 |
| Renewable Energy Assets Limited | Energy | 2014 |
| Renewable Energy Hold Co Limited | Energy | 2014 |
| Renewable Integration Limited | Professional & scientific | 2024 |
| Renewal Choir CIC | Arts & recreation | 2011 |
| Renewr AI Limited | Financial services | 2022 |
| Renex Limited | Wholesale & retail | 2022 |
| Rengai Limited | Professional & scientific | 2025 |
| Rengco Ltd | Construction | 2015 |