| Ragless Groundworks Ltd. | Construction | 2013 |
| Ragless Property Ltd. | Real estate | 2016 |
| Raglets Ltd | Real estate | 2021 |
| Ragley Boat Stop Limited | Hospitality | 2025 |
| Raigersfield Capital Limited | Financial services | 1998 |
| RAILRS3 Ltd | Professional & scientific | 2012 |
| Rainbow Paws Soft Play Ltd | Arts & recreation | 2025 |
| Rainhedge GP Services Limited | Health & social care | 2026 |
| Raiz CLO Ltd | Wholesale & retail | 2024 |
| Rajhi Properties Limited | Real estate | 2022 |
| Rampworxs Ltd. | Wholesale & retail | 2023 |
| Randalls Contractors Limited | Construction | 2005 |
| Randies Ltd | Wholesale & retail | 2020 |
| Randmere (Karenza) Limited | Construction | 2025 |
| Randmere (Southbourne) Limited | Construction | 2025 |
| Randmere Holdings Ltd | Financial services | 2021 |
| Randmere Limited | Construction | 2020 |
| Random Hare Retreats Limited | Hospitality | 2026 |
| RANGER4 Limited | Administrative & support | 2011 |
| Rapid Air Wifi Solutions Ltd | Information & communication | 2019 |
| Rapid Industrial Gases Limited | Wholesale & retail | 1999 |
| Rapid Media Solutions Limited | Administrative & support | 2025 |
| RAQ Communications Limited | Professional & scientific | 2007 |
| Rare Life Limited | Wholesale & retail | 2019 |
| Rastran International Transport Limited | Transport & logistics | 2024 |
| Rastran Limited | Other services | 2011 |
| Ratefield Consulting Limited | Professional & scientific | 2019 |
| Rates 4U Ltd | Financial services | 2023 |
| Rather Unpleasant Ltd | Manufacturing | 2020 |
| Raughmere Drive Limited | Households | 2009 |
| Rauniyar Enterprises Ltd | Wholesale & retail | 2024 |
| Ravenswood Court RTM Company Limited | Households | 2014 |
| Rawfell Limited | Wholesale & retail | 2013 |
| Rawleigh Property Holdings Limited | Financial services | 2021 |
| RAY Dyer Accountants Ltd | Professional & scientific | 2009 |
| RB Steel Design Limited | Professional & scientific | 2007 |
| RBK Scaffolding Limited | Construction | 2024 |
| RC Investment Properties Ltd | Real estate | 2021 |
| RCO 001 Limited | Wholesale & retail | 2023 |
| RCO 002 Limited | Wholesale & retail | 2023 |
| RCO 003 Limited | Wholesale & retail | 2024 |
| RDB1 Holdings Limited | Financial services | 2023 |
| RDN Associates Limited | Administrative & support | 2012 |
| REA Associates Limited | Manufacturing | 2003 |
| Really Rather Good Group Ltd | Financial services | 2015 |
| Rebanding UK Ltd | Other services | 2025 |
| Recenseo Limited | Professional & scientific | 2008 |
| Rechargz Limited | Manufacturing | 2024 |
| Reculver AED UK Services Ltd | Professional & scientific | 2019 |
| Red FOX Wines Limited | Wholesale & retail | 2007 |
| Red Hot Tribute Peppers Ltd | Arts & recreation | 2024 |
| Red River Projects Ltd | Administrative & support | 2010 |
| Red Triple Eight Ltd | Real estate | 2024 |
| Redens Alpacas Limited | Wholesale & retail | 2016 |
| Redpocket Limited | Professional & scientific | 2003 |
| Redshift Entertainment Ltd | Wholesale & retail | 2017 |
| Redstone Plastering Limited | Construction | 2016 |
| Redwood Financial Advisers Ltd | Financial services | 2011 |
| Reedstone Consulting Limited | Information & communication | 1992 |
| Reefmaster Software Limited | Information & communication | 2013 |
| Reel Life Docs Ltd | Information & communication | 2023 |
| Refilled Ltd | Wholesale & retail | 2019 |
| Reflectionsmarine Limited | Manufacturing | 2019 |
| Reframing Ltd | Professional & scientific | 2025 |
| Regis IT Limited | Information & communication | 2000 |
| Regis Sport and Leisure Ltd | Education | 2022 |
| Regis Water Heating Ltd | Construction | 2009 |
| Reimage Ltd | Construction | 2025 |
| Rejuiced Limited | Wholesale & retail | 2013 |
| Reliance Ambulance Service Ltd | Health & social care | 2018 |
| Relion Consultants Ltd | Administrative & support | 2011 |
| Relish Lifestyle Ltd | Hospitality | 2020 |
| Remm Management Ltd | Financial services | 2025 |
| Renaissance Wines Limited | Information & communication | 1999 |
| Renapur Limited | Wholesale & retail | 1994 |
| Rendezvous Care Services Limited | Health & social care | 2021 |
| Rendezvous Cinema Limited | Information & communication | 2021 |
| Renewable Energy Solutions + Ltd | Energy | 2020 |
| Renewable Management Limited | Energy | 2018 |
| Renewable Operations & Management Services Limited | Energy | 2016 |
| Renewal (Holdings) Limited | Professional & scientific | 2005 |
| Renewal Group Limited | Real estate | 2005 |
| Renewal Two Limited | Real estate | 2003 |
| Rent Hive Property Solutions Ltd | Households | 2025 |
| Reporterxl Ltd | Information & communication | 2026 |
| Response Roofing Limited | Construction | 2025 |
| Restful Retreats Ltd | Real estate | 2022 |
| Restorists Ltd | Information & communication | 2026 |
| Resurrection Property Ltd | Real estate | 2015 |
| Retail Gurus Limited | Administrative & support | 2014 |
| Retail Opportunities Consulting Limited | Professional & scientific | 2022 |
| Retailweb Limited | Information & communication | 2001 |
| Retro Estates Ltd | Real estate | 2026 |
| Retroneed Limited | Real estate | 2002 |
| Revelation Community | Other services | 2010 |
| Reviveai Limited | Information & communication | 2024 |
| Revolver Studio Limited | Professional & scientific | 2014 |
| Rewild Sauna Ltd | Other services | 2024 |
| REX Wingate & Partners Limited | Manufacturing | 2008 |
| RFC Surveying Ltd | Professional & scientific | 2023 |