| Raenik (Calne) Limited | Administrative & support | 2002 |
| RAG and Bone Arts C.I.C. | Arts & recreation | 2011 |
| Rahim Catering Ltd | Hospitality | 2023 |
| Rahman Locum Services Ltd | Health & social care | 2025 |
| Rajeshdai Grocery Limited | Wholesale & retail | 2022 |
| Rambling Toms Garden Services Ltd | Administrative & support | 2024 |
| Ramsford Building & Renovation Limited | Construction | 2025 |
| Rankings Advisor Ltd | Professional & scientific | 2011 |
| Ransiri Investment Limited | Real estate | 2024 |
| Rapid Padel Ltd | Arts & recreation | 2026 |
| Rapture Events UK Limited | Hospitality | 2025 |
| Rapture Live Limited | Hospitality | 2020 |
| Ravencarter CIC | Professional & scientific | 2025 |
| RAW Mellifera Limited | Agriculture & fishing | 2019 |
| Rawlings & Davis Ltd | Agriculture & fishing | 2008 |
| Rawse Limited | Professional & scientific | 2025 |
| Razor's Edge Sharpening (UK) Limited | Manufacturing | 2023 |
| RB Investment Group Limited | Construction | 2024 |
| RCI Ventures Limited | Information & communication | 2026 |
| RCO Holdings Ltd | Financial services | 2016 |
| RDL Distribution Limited | Professional & scientific | 1954 |
| RDL Holdings Limited | Extraterritorial | 1998 |
| RE, SV & PR Marks Ltd | Agriculture & fishing | 2020 |
| REA Home Developments Ltd | Construction | 2023 |
| Read Fiction Ltd | Information & communication | 2012 |
| Read Risk and Pricing Ltd | Professional & scientific | 2026 |
| Real World Properties (RL83) Ltd | Construction | 2018 |
| Reality Recess Limited | Wholesale & retail | 2014 |
| Realsync AI Ltd | Information & communication | 2024 |
| Realtime Despatch Limited | Financial services | 1963 |
| Reay-Jones Translation Ltd | Professional & scientific | 2010 |
| Rebecca SCY Health Limited | Health & social care | 2021 |
| Recce App Limited | Information & communication | 2019 |
| Reclaiming Wholeness Training Ltd | Health & social care | 2025 |
| Recurro Consulting Limited | Professional & scientific | 2024 |
| Red & White Recruitment Limited | Professional & scientific | 2007 |
| Red Chillies Restaurant Ltd | Hospitality | 2026 |
| Red Phoenix 3D Ltd | Manufacturing | 2024 |
| Red Rose Technologies Ltd | Information & communication | 2020 |
| Red Sky Team Ltd | Professional & scientific | 2013 |
| Red Squirrel Plumbing & Heating SW Ltd | Construction | 2026 |
| Redland Research Associates Ltd | Education | 2026 |
| Redland Research Services Ltd | Professional & scientific | 2024 |
| Redland Spice Ltd | Hospitality | 2026 |
| Redpin Publishing Ltd | Information & communication | 2004 |
| Redsella Limited | Administrative & support | 2010 |
| Reed Fencing South West Limited | Administrative & support | 2021 |
| Reeds Farm Management Company Limited | Extraterritorial | 1988 |
| Reesycle Limited | Wholesale & retail | 2020 |
| Reeves Farm Bratton Limited | Agriculture & fishing | 2021 |
| Refine U Limited | Hospitality | 2017 |
| Refreshed (DMD) Limited | Administrative & support | 2019 |
| Refurbished Frog Bikes Ltd | Wholesale & retail | 2023 |
| Regent Building Developments Ltd | Construction | 2018 |
| Regent Building Investments Ltd | Financial services | 2018 |
| Regent Building Ltd | Construction | 2017 |
| Regent Properties (South West) Ltd | Real estate | 2020 |
| Regent Street Nails and Beauty Ltd | Other services | 2026 |
| Region Roofing Ltd | Construction | 2019 |
| Reliance Home Group Ltd | Construction | 2025 |
| Relief PUB Co Ltd | Administrative & support | 2018 |
| Relish Life Ltd | Real estate | 2025 |
| Remedy Aesthetics Ltd | Health & social care | 2025 |
| Render Supplies Direct Ltd | Construction | 2026 |
| Renegade-Uk Equipment Ltd | Manufacturing | 2020 |
| Renew Marine Ltd | Professional & scientific | 2023 |
| Renology Ltd | Real estate | 2025 |
| Rental Retreats Limited | Real estate | 2015 |
| Rents Properties Limited | Real estate | 2007 |
| Reprap Ltd | Manufacturing | 2009 |
| Reprise Property Ltd | Real estate | 2022 |
| Resin Flooring Projects Limited | Construction | 2018 |
| Resolution Space Limited | Professional & scientific | 2020 |
| Resolutte Group Limited | Financial services | 2021 |
| Resolutte Limited | Administrative & support | 2018 |
| Resolutte Properties Limited | Real estate | 2021 |
| Resq-Dive Ltd | Education | 2025 |
| Resurrec-Trim Ltd | Construction | 2021 |
| Retail Directions (UK) Limited | Wholesale & retail | 2007 |
| Retail Directions Limited | Extraterritorial | 2011 |
| Retro ERA Ltd | Wholesale & retail | 2025 |
| Retro Wagons Ltd | Wholesale & retail | 2020 |
| Revena Limited | Professional & scientific | 2019 |
| Revera Ventures Ltd | Real estate | 2017 |
| RFS Financial Consulting Limited | Professional & scientific | 2022 |
| RGD Properties Ltd | Real estate | 2024 |
| RH Farm Administration Limited | Professional & scientific | 2010 |
| RHD Training Ltd | Education | 2014 |
| Rhythm Design Studio Ltd | Professional & scientific | 2021 |
| Rhythm Instinct Limited | Education | 2011 |
| RI0 Acima Ltd | Financial services | 2020 |
| Richmond Hill Solutions Limited | Information & communication | 2015 |
| Richmond House Bath Limited | Other services | 2011 |
| Ricky WIZ Fencing Limited | Construction | 2014 |
| Riclyn Properties Ltd | Real estate | 2021 |
| Riddiford Scenic Construction Ltd | Construction | 2021 |
| Ridgefield Farm Poultry & Game Limited | Agriculture & fishing | 2010 |
| Ridgeline Roofing Solutions SW Ltd | Construction | 2026 |
| Rimscarnated Ltd | Wholesale & retail | 2016 |
| Rioalto Ltd | Financial services | 2026 |