| Red Orange Bricks Ltd | Real estate | 2024 |
| Red PIN Enterprises Ltd | Professional & scientific | 2026 |
| Red Roofs (Ferndown) Maintenance Company Limited | Households | 1976 |
| RED8 People Solutions Limited | Administrative & support | 2024 |
| Redacted Shiny Ltd | Information & communication | 2014 |
| Redbridge Track Limited | Households | 2016 |
| Redcloak BIM Services Limited | Professional & scientific | 2019 |
| Redeploy Ltd | Water & waste | 2025 |
| Redfox Ventures Ltd | Financial services | 2026 |
| Redline Home Rescue Ltd | Construction | 2026 |
| Redraft Property Ltd | Real estate | 2024 |
| Redtale Holdings Limited | Financial services | 2011 |
| Reeta Consulting Limited | Professional & scientific | 2012 |
| Reeves and Gallagher Limited | Other services | 2008 |
| Reeves Roofing Ltd | Construction | 2014 |
| Refactor Consulting Limited | Information & communication | 2020 |
| Refactorate Limited | Information & communication | 2018 |
| Refresh Recruitment Group Limited | Administrative & support | 2026 |
| Refresh Recruitment Limited | Administrative & support | 2024 |
| Refresh Recruitment Services Limited | Administrative & support | 2026 |
| Refrigeration Sales & Rentals Limited | Wholesale & retail | 1999 |
| Regency Direct Limited | Professional & scientific | 2005 |
| Regia Consulting Limited | Information & communication | 2013 |
| Regstrategy Consulting Ltd | Administrative & support | 2024 |
| Regulation Solutions Limited | Professional & scientific | 2024 |
| Reliability and Safety Solutions Limited | Professional & scientific | 2002 |
| Rema Consulting Limited | Professional & scientific | 2026 |
| Remedy Labs Limited | Professional & scientific | 2013 |
| Remi Geffroy Fitness Ltd | Arts & recreation | 2022 |
| Remote Options Limited | Administrative & support | 2022 |
| Rempark Limited | Real estate | 1966 |
| Rempstone Ltd | Information & communication | 2016 |
| Renaissance Endowment Review Services Ltd | Professional & scientific | 2004 |
| Renergi Ltd | Professional & scientific | 2025 |
| Renew Risk Limited | Information & communication | 2021 |
| Renewmy Cards UK Ltd | Administrative & support | 2024 |
| Renntec Engineering Ltd | Professional & scientific | 2006 |
| Rentek Aviation Limited | Manufacturing | 2014 |
| Repertor Limited | Professional & scientific | 2020 |
| Reset Studio Ltd | Professional & scientific | 2018 |
| Reset.Escapes Ltd | Hospitality | 2025 |
| Resilient Data Systems Ltd | Information & communication | 2013 |
| Response Creative Limited | Professional & scientific | 2013 |
| Responsible Systems Ltd | Information & communication | 2025 |
| Results Triathlon Limited | Arts & recreation | 2007 |
| Retrace Software Limited | Information & communication | 2017 |
| Revell Bikes Limited | Wholesale & retail | 2002 |
| Revell Holdings Limited | Real estate | 1996 |
| Revell Hybrid Coaching Limited | Arts & recreation | 2026 |
| REVOLUTI0NCOM Limited | Professional & scientific | 2019 |
| Revolution in Mind Ltd | Arts & recreation | 2025 |
| Revtech Automotive Limited | Wholesale & retail | 2000 |
| Revtech Systems Limited | Information & communication | 2023 |
| Rewire Group Limited | Professional & scientific | 2021 |
| Reydstech Limited | Information & communication | 2013 |
| Reynolds Property Investments Limited | Real estate | 2019 |
| RFM Windows Ltd. | Construction | 2007 |
| RG Boon Limited | Information & communication | 2026 |
| RG Change Consulting Limited | Professional & scientific | 2024 |
| RGR Plumbing & Heating Ltd | Administrative & support | 2018 |
| Rhino Construction Group Limited | Construction | 2020 |
| Rhino Construction Materials Limited | Wholesale & retail | 2024 |
| Rhino Group of Companies Limited | Financial services | 2026 |
| Rhino Recycling Limited | Construction | 2024 |
| Rhino Shopfitting Limited | Construction | 2026 |
| Riandaw Ltd | Information & communication | 2013 |
| Richard Leech Limited | Arts & recreation | 2025 |
| Richards SFH Management Ltd | Real estate | 2018 |
| Richardson Prop Making Ltd | Information & communication | 2018 |
| Richardsons Property Consultants Ltd | Real estate | 2020 |
| Richaronz Ltd | Information & communication | 2023 |
| Richmond Hall Limited | Real estate | 2018 |
| Richmond Project Management Limited | Professional & scientific | 2020 |
| Richville Consulting Limited | Wholesale & retail | 2023 |
| Ricson PMC Limited | Professional & scientific | 2019 |
| Ride of the Legends Limited | Administrative & support | 2013 |
| Ridgewater Energy Limited | Professional & scientific | 2017 |
| Ridgewell Ltd | Information & communication | 2022 |
| Riesca Limited | Administrative & support | 2011 |
| Rightpath Business Solutions Limited | Information & communication | 2016 |
| Rikardsdotter Limited | Manufacturing | 2024 |
| Rimjhim Wimbourne Ltd | Hospitality | 2020 |
| Rincage Limited | Professional & scientific | 2024 |
| Rinnovare Services Limited | Administrative & support | 2019 |
| Ripe Pear Ltd | Professional & scientific | 2015 |
| Ripple Consult Ltd | Professional & scientific | 2024 |
| Rise Chiropractic Ltd | Health & social care | 2026 |
| Rise Management Solutions Limited | Professional & scientific | 2020 |
| Rise Retreats Ltd | Other services | 2021 |
| Riskmatters Consulting Ltd | Professional & scientific | 2019 |
| Rivatron Systems Ltd | Manufacturing | 2026 |
| Rivendell Park Holidays Limited | Hospitality | 2025 |
| River Allen CIC | Professional & scientific | 2024 |
| Riverlaine Consulting Ltd | Professional & scientific | 2023 |
| Rivers Edge Wimborne Ltd | Hospitality | 2025 |
| Riversdale Flats (Wimborne) Limited | Households | 1972 |
| Riverside Bowl Limited | Arts & recreation | 2009 |
| RJB Vehicle Logistics Ltd | Transport & logistics | 2019 |
| Rjjw Consulting Ltd | Health & social care | 2026 |
| RJW HR Solutions Limited | Professional & scientific | 2024 |