| Raaga Sudha Music Academy Community Interest Company | Arts & recreation | 2020 |
| RAB Associates (NE) Ltd | Professional & scientific | 2026 |
| RAB TAN Ltd | Other services | 2026 |
| Raby Gladstone Limited | Real estate | 2015 |
| Raby Property Management Ltd | Real estate | 2016 |
| RAC Services N E Ltd | Construction | 2026 |
| Race 2 Off-Road Ltd | Wholesale & retail | 2014 |
| Race Ready Graphics Ltd | Wholesale & retail | 2025 |
| Rachael Mcardle Properties Ltd | Real estate | 2015 |
| Rachael Yost Ltd | Professional & scientific | 2015 |
| Rachel Anderson Consulting Ltd | Professional & scientific | 2010 |
| Rachel Hiles Educational Psychology Ltd | Education | 2022 |
| Rachel Morgan Medical Aesthetics Limited | Other services | 2026 |
| Rachel Sebastian and Co. Solicitors Limited | Professional & scientific | 2021 |
| Racking and Storage Solutions NE Ltd | Administrative & support | 2006 |
| Raco Ltd | Manufacturing | 2002 |
| RAD Joinery & Construction Ltd | Construction | 2019 |
| Radar Publishing Limited | Information & communication | 2011 |
| Radcm LLP | | 2023 |
| Radial Path Limited | Professional & scientific | 2017 |
| Radiantshield Advisory Ltd | Professional & scientific | 2026 |
| Radical Panda Ltd | Information & communication | 2019 |
| Radio Advertising Bureau Limited | Other services | 2006 |
| Radio Ouseburn CIC | Hospitality | 2025 |
| Radiocentre Limited | Other services | 1991 |
| Radiology Reporting Solutions Ltd | Health & social care | 2024 |
| Radlett Holdings Limited | Financial services | 2019 |
| Radnorr Ltd | Wholesale & retail | 2025 |
| Raffle Fever Competitions Limited | Information & communication | 2023 |
| Raffs International Ltd | Hospitality | 2026 |
| Rafiki Maintenance & Solutions Limited | Construction | 2025 |
| Rafprop Ltd | Real estate | 2026 |
| Ragchatbots Ltd | Information & communication | 2026 |
| RAH Holdings Limited | Administrative & support | 2006 |
| RAH International Limited | Administrative & support | 2006 |
| RAH Partners Limited | Professional & scientific | 2006 |
| RAH Partners UK LLP | | 2006 |
| Raha Group Holdings Ltd | Transport & logistics | 2026 |
| Rahee Ltd | Administrative & support | 2017 |
| Rahimian & Najafi Properties Ltd | Real estate | 2026 |
| Rahman Business Ltd | Wholesale & retail | 2023 |
| Rahman&Rashid Events Ltd | Hospitality | 2026 |
| Raicar Limited | Real estate | 2023 |
| Rail Commercial Limited | Professional & scientific | 2024 |
| Rail Professional Services Ltd | Construction | 2020 |
| Railroom Ltd | Wholesale & retail | 2026 |
| Railsafe Systems Limited | Extraterritorial | 2000 |
| Railtech Limited | Other services | 2009 |
| Railtourguide Global Limited | Administrative & support | 2014 |
| Railtourguide Holdings Limited | Administrative & support | 2020 |
| Rainbow (Newcastle) Ltd | Real estate | 2009 |
| Rainbow Bridge Pet Pathway Ltd | Water & waste | 2024 |
| Rainbow Nail and Beauty Limited | Other services | 2017 |
| Rainbow Pre-School Community Interest Company | Education | 2010 |
| Rainbow Rehabilitation Limited | Health & social care | 2009 |
| RAINBOW8 Limited | Hospitality | 2025 |
| Rainbowmontessorischool Ltd | Education | 2013 |
| Raine and James Ltd | Wholesale & retail | 2020 |
| Rainer Leisure Ltd | Hospitality | 2020 |
| Rainy Daze Limited | Professional & scientific | 1999 |
| Raise Training Ltd | Wholesale & retail | 2024 |
| Raiserbase Ltd | Information & communication | 2018 |
| Raizon Trading Company Ltd | Wholesale & retail | 2025 |
| RAJ Kitchen NE Ltd | Hospitality | 2025 |
| RAJ Mogul Restaurant Ltd | Hospitality | 2026 |
| RAJ Singh Badhan Limited | Health & social care | 2020 |
| Raja Rajeswari Ltd | Wholesale & retail | 2024 |
| Rajan Jerath Ltd | Real estate | 2026 |
| Rajapur Properties Limited | Real estate | 2024 |
| Rajput & Sons Ltd | Wholesale & retail | 2025 |
| RAL Turbine Services Ltd | Professional & scientific | 2020 |
| Ralbos Limited | Real estate | 2017 |
| Rama Estates and Management Ltd | Real estate | 2025 |
| Rama Residences Ltd | Real estate | 2021 |
| Ramage (Trade Windows) Limited | Manufacturing | 1998 |
| Ramage Transport Limited | Transport & logistics | 1984 |
| Ramaka (North East) Limited | Health & social care | 2018 |
| RAMAKA2 Limited | Real estate | 2023 |
| Ramaneey Limited | Wholesale & retail | 2025 |
| Ramarketing & PR Limited | Professional & scientific | 2011 |
| Ramcrest Holdings Limited | Construction | 2020 |
| Rami Real Estates Ltd | Real estate | 2024 |
| Ramin Zacks Ltd | Hospitality | 2024 |
| Ramsay Chiropractic & Laser Limited | Health & social care | 2023 |
| Ramsay L&P Ltd | Construction | 2026 |
| Ramsay Services Investments Limited | Real estate | 2003 |
| Ramsey Construction North East Limited | Construction | 2020 |
| Ramshaw & Co Limited | Professional & scientific | 2002 |
| Ramshope Farm Ltd | Agriculture & fishing | 2007 |
| Ramsiam Investments Ltd | Financial services | 2024 |
| Ramsiam Ltd | Real estate | 2021 |
| Rana Yousaf Jewellers Ltd | Manufacturing | 2004 |
| Ranches SS Ltd | Hospitality | 2024 |
| Rand Food Ltd | Hospitality | 2025 |
| Random Clothing Ltd | Wholesale & retail | 2016 |
| Ranga Travels Ltd | Financial services | 2016 |
| Range 1935 Limited | Arts & recreation | 2025 |
| Rangeoption Property Management Limited | Households | 1986 |
| Rangeworthy Court Wedding Venue Ltd | Real estate | 2017 |
| Ranja Properties Ltd | Real estate | 2024 |