| Retail Orbit Ltd | Wholesale & retail | 2021 |
| Retail Supply Ltd | Wholesale & retail | 2023 |
| Retailessence Ltd | Wholesale & retail | 2025 |
| Retailhutuk Limited | Wholesale & retail | 2021 |
| Retalix Limited | Wholesale & retail | 2023 |
| Rethink - Workforce and People Strategy Ltd | Professional & scientific | 2025 |
| Retinapro Limited | Wholesale & retail | 2026 |
| Retro ASSESSOR360 Ltd | Construction | 2025 |
| Retro Compliance Ltd | Professional & scientific | 2024 |
| Retro Diggers Limited | Other services | 2020 |
| Retro Drip UK Ltd | Wholesale & retail | 2026 |
| Retro Jcbunton Ltd | Wholesale & retail | 2020 |
| Retro Signs Limited | Wholesale & retail | 2016 |
| Retrofit Consultants Limited | Professional & scientific | 2020 |
| Retrospecced Limited | Extraterritorial | 2024 |
| Retrotrials&Bikes Ltd | Wholesale & retail | 2020 |
| Retzone Ltd | Wholesale & retail | 2025 |
| REV EM Limited | Wholesale & retail | 2026 |
| REV Vault Ltd | Wholesale & retail | 2025 |
| Revelation Motorsport Limited | Manufacturing | 2006 |
| Revenoid AI Limited | Wholesale & retail | 2025 |
| Reverse Thought Limited | Professional & scientific | 2008 |
| Revfirst Limited | Wholesale & retail | 2025 |
| Reviews Card Ltd | Other services | 2023 |
| Reviews Direct Ltd | Wholesale & retail | 2025 |
| Reviva Group Ltd | Health & social care | 2026 |
| Revive & Restore Cosmetic Care Limited | Other services | 2024 |
| Revive Automotive Limited | Wholesale & retail | 2019 |
| Revive Autotech Ltd | Wholesale & retail | 2024 |
| Revivepropertyhub Ltd | Real estate | 2026 |
| Revolution Assets Ltd | Real estate | 2026 |
| Revolver Outfitters Limited | Wholesale & retail | 2020 |
| Revtronic Limited | Manufacturing | 2011 |
| Revverz UK Ltd | Wholesale & retail | 2024 |
| Rewired Properties Ltd | Real estate | 2025 |
| Rexaq Ltd | Wholesale & retail | 2022 |
| Reyahs-Rituals Ltd | Manufacturing | 2025 |
| Reynolds Online Limited | Other services | 2014 |
| Reza Food & Takeaway Ltd | Hospitality | 2025 |
| Reza Mini Market Ltd | Wholesale & retail | 2026 |
| RF Haulage (Bradford) Limited | Transport & logistics | 2018 |
| Rfpg Holdings Limited | Financial services | 2012 |
| RG Build Limited | Construction | 2018 |
| RG Build Roofing Ltd | Construction | 2023 |
| RG Trading and Consultancy Ltd | Wholesale & retail | 2026 |
| Rgjfitness Limited | Arts & recreation | 2024 |
| RGK Autonation Ltd | Wholesale & retail | 2024 |
| RGN Automation Ltd | Administrative & support | 2022 |
| RGS Waste & Transport Services Limited | Construction | 2007 |
| RH 121 Ltd | Hospitality | 2023 |
| RH Joinery Services Ltd | Manufacturing | 2021 |
| RH Legal (EM) Limited | Other services | 2023 |
| RH Lettings Ltd | Real estate | 2021 |
| RH Vehicle Solutions Ltd | Wholesale & retail | 2025 |
| RHA Consultancy (UK) Ltd | Administrative & support | 2017 |
| RHD Law Ltd | Professional & scientific | 2019 |
| Rhit Solutions (UK) Limited | Information & communication | 2012 |
| RHK Pharma Ltd | Health & social care | 2025 |
| RHK Trading Ltd | Wholesale & retail | 2025 |
| Rhodes & Walker Limited | Professional & scientific | 2019 |
| Rhodes Construction Contractors Ltd | Construction | 2026 |
| Rhodes Joinery Group Limited | Manufacturing | 2018 |
| Rhodes Scaffolding Limited | Construction | 2018 |
| Rhythm 'N Booze Ltd | Hospitality | 2022 |
| Rhythmosaic CIC | Arts & recreation | 2026 |
| RIA Limited | Administrative & support | 2022 |
| Ria-Architecture Limited | Professional & scientific | 2011 |
| Riada Fire Doors Limited | Construction | 2025 |
| Riana Developments Ltd | Construction | 2010 |
| Riana Holdings Ltd | Financial services | 2023 |
| Riaz Travels & Minibuses Ltd | Transport & logistics | 2026 |
| Ribak Precision Engineering Limited | Manufacturing | 1981 |
| Rice Box Express Limited | Hospitality | 2022 |
| Richard Arundel Butchers Ltd | Wholesale & retail | 2012 |
| Richard Harris AD Limited | Information & communication | 2018 |
| Richard Henry Autos Limited | Wholesale & retail | 1990 |
| Richard J. Hall Limited | Construction | 2019 |
| Richards Renovations Limited | Construction | 2023 |
| Richardson Business Equipment Distributors Limited | Wholesale & retail | 1978 |
| Richardson Business Equipment Ltd | Wholesale & retail | 2021 |
| Richardson Business Furniture Ltd | Wholesale & retail | 2022 |
| Richardson Business Interiors Ltd | Wholesale & retail | 2022 |
| Riches Security Systems Ltd | Administrative & support | 2023 |
| Richkar Investments Limited | Real estate | 2014 |
| Richmond & Co Distribution Ltd | Transport & logistics | 2026 |
| Richmond AIS Limited | Professional & scientific | 2025 |
| Richmond Blinds Ltd | Manufacturing | 2021 |
| Richmond Building Centre Limited | Construction | 2017 |
| Richmond Commercials Ltd | Real estate | 2025 |
| Richmond Kitchen and Bathroom Ltd | Manufacturing | 2021 |
| Richmond Management (Northern) Limited | Real estate | 1995 |
| Richmond Properties MCR Ltd | Administrative & support | 2020 |
| Richtom Developments Ltd | Construction | 2025 |
| Rick Services Limited | Construction | 2025 |
| Ricktac Security Ltd | Administrative & support | 2020 |
| Ricky's Diner Ltd | Hospitality | 2019 |
| Rico Go Limited | Construction | 2024 |
| Ride in Cars Limited | Wholesale & retail | 2018 |
| Ride on Carz 4 Kidz Ltd | Wholesale & retail | 2018 |
| Ride Rover Ltd | Transport & logistics | 2024 |