| Ragasaan Holdings Limited | Hospitality | 2002 |
| Ragasaan Limited | Hospitality | 2000 |
| Ragdoll Productions Limited | Information & communication | 1991 |
| Raggy and Taggy Ltd | Manufacturing | 2008 |
| Rahal Builder Ltd | Construction | 2018 |
| Rahul Gupta Consultancy Limited | Public administration | 2016 |
| Rainbow Fish & Grill Private Ltd | Hospitality | 2026 |
| Raisbeck PR Limited | Professional & scientific | 2007 |
| Raising Remarkable Teenagers Ltd | Education | 2021 |
| Rajulia Ltd | Real estate | 2026 |
| Ralcat Limited | Manufacturing | 2019 |
| Rally 2011 Limited | Extraterritorial | 2006 |
| Ralph Davies International Limited | Transport & logistics | 1988 |
| Ramzan Halal Butchers Ltd | Wholesale & retail | 2019 |
| Rancourt Services Limited | Professional & scientific | 1996 |
| Rangex Limited | Education | 2025 |
| Ranveer Media Limited | Information & communication | 2025 |
| RAP51 Ltd | Financial services | 2022 |
| Rapidreach Ltd | Transport & logistics | 2024 |
| Ravrani Group Limited | Real estate | 2024 |
| RAW Chutney Properties Limited | Real estate | 2024 |
| RAY of Sun in the Sea Ltd | Administrative & support | 2022 |
| Raymond Connor Limited | Construction | 2013 |
| RBM Pharma Ltd | Professional & scientific | 2019 |
| RBW Property Group Ltd | Real estate | 2025 |
| RC Baker Ltd | Agriculture & fishing | 1979 |
| RC Sales Connect Ltd | Professional & scientific | 2024 |
| Rdd-Ac Ltd | Administrative & support | 2020 |
| RDS Confidential Shredding Ltd | Administrative & support | 2017 |
| RDT Motors Limited | Wholesale & retail | 2006 |
| RE Investors Ltd | Real estate | 2021 |
| Reaction Research Ltd | Professional & scientific | 2026 |
| Read This Limited | Information & communication | 2021 |
| Ready Movers Ltd | Transport & logistics | 2026 |
| Real Multi Brand Ltd | Wholesale & retail | 2020 |
| Real Numbers Ltd | Professional & scientific | 2002 |
| Real Talking Consulting Ltd | Information & communication | 2025 |
| Realign Advanced Physiotherapy & Wellness Limited | Health & social care | 2025 |
| Reardon Port Consulting Limited | Professional & scientific | 2022 |
| Reattendance Ltd | Information & communication | 2012 |
| Reba Property Ltd | Real estate | 2022 |
| Rebecca Berry Ltd | Professional & scientific | 2022 |
| Rebellion Consulting Limited | Professional & scientific | 2004 |
| Reboot and Repair Ltd | Other services | 2020 |
| Reboot Fitness Limited | Arts & recreation | 2017 |
| Recruitserv Ltd | Administrative & support | 2023 |
| Recycosis Limited | Manufacturing | 2016 |
| Red Beard Designs Limited | Manufacturing | 2016 |
| Red Clematis Coaching Services Ltd | Professional & scientific | 2014 |
| Red Hammer Limited | Information & communication | 2026 |
| Red IVY Consulting Ltd | Professional & scientific | 2022 |
| Red Jade Chinese Therapy Ltd | Health & social care | 2022 |
| Red Rock Digital Ltd | Information & communication | 2022 |
| Red Snapper Photography Equipment LLP | | 2010 |
| Red Star Consultancy Services Limited | Extraterritorial | 2016 |
| Red Traders Ltd | Wholesale & retail | 2025 |
| Red-Tx Limited | Information & communication | 2008 |
| Rede Performance Ltd | Arts & recreation | 2024 |
| Reducose Limited | Professional & scientific | 2014 |
| Reeve Newfields Limited | Agriculture & fishing | 1964 |
| Refixcar Ltd | Manufacturing | 2025 |
| Reflections Consultancy Limited | Information & communication | 2016 |
| Reflex Chiropractic Limited | Health & social care | 2005 |
| Refreshing Horizons Limited | Information & communication | 2009 |
| REG Trading Ltd | Wholesale & retail | 2024 |
| Reg's Cafe & Catering Ltd | Extraterritorial | 2015 |
| Regen Real Estate Ltd | Professional & scientific | 2024 |
| Regency Cars Banbury Ltd | Transport & logistics | 2024 |
| Regsafe Design Limited | Professional & scientific | 2025 |
| RELIABLETRADERS786 Ltd | Wholesale & retail | 2020 |
| Rembro Holdings Ltd | Financial services | 2024 |
| Remyced Property LLP | | 2007 |
| Renderheads Limited | Information & communication | 2006 |
| Renew Hair Professional Limited | Wholesale & retail | 2023 |
| Renovibe Ltd | Construction | 2026 |
| Rentzi Ltd | Wholesale & retail | 2024 |
| RES Electro Limited | Professional & scientific | 2005 |
| RES Systems Limited | Administrative & support | 2001 |
| Reshma Ltd | Professional & scientific | 2015 |
| Resilient Building Solutions Limited | Professional & scientific | 2018 |
| Resj Properties Limited | Real estate | 1983 |
| Resnas Limited | Real estate | 2020 |
| Resolu Ltd | Professional & scientific | 2019 |
| Resonance Creative Ltd | Professional & scientific | 2019 |
| Resonance Dynamics Limited | Professional & scientific | 2018 |
| Rest Assured Hotel Ltd | Hospitality | 2016 |
| Restaurant Collective Limited | Other services | 2017 |
| Restaurant Developments Limited | Information & communication | 2010 |
| Retail Experience Ltd | Professional & scientific | 2014 |
| Retail Spa Limited | Professional & scientific | 2009 |
| Retinascreen Limited | Information & communication | 2025 |
| Reuben Chester Forbes Limited | Wholesale & retail | 2024 |
| Reuniform Limited | Manufacturing | 2010 |
| Rev-Ax Ltd | Administrative & support | 2024 |
| Revelix Ltd | Professional & scientific | 2025 |
| Revolution Communications and Events Limited | Professional & scientific | 2014 |
| Revolution Wines Limited | Wholesale & retail | 2011 |
| Rewardable Limited | Information & communication | 2023 |
| Rewarded Ltd | Administrative & support | 2024 |
| Rewire Digital Limited | Information & communication | 2017 |