| Rankin 51 Ltd | Real estate | 2024 |
| Rankin Brands Limited | Administrative & support | 2020 |
| Rankin Holdings Limited | Real estate | 2016 |
| Ranley Investments Limited | Real estate | 2016 |
| Rannoch House Residents Association Limited | Households | 1985 |
| Ranq Ltd | Construction | 2026 |
| Ranson Pricing Limited | Professional & scientific | 2012 |
| Ranyas Hand Car Wash Ltd | Administrative & support | 2026 |
| Rapad Cargo Ltd | Transport & logistics | 2019 |
| Rape Crisis Tyneside and Northumberland | Health & social care | 2010 |
| Rapid 9 Signs Limited | Manufacturing | 2011 |
| Rapid Electrical Distributors Holdings Limited | Financial services | 2021 |
| Rapid Meds Advice Limited | Health & social care | 2025 |
| Rapid Response 24/7 Ltd | Construction | 2026 |
| Rapidmeduk Ltd | Transport & logistics | 2025 |
| Rapidorbit Ltd | Wholesale & retail | 2025 |
| Rapier Ella Kathleen Ltd | Wholesale & retail | 2026 |
| Raps Developments Ltd | Construction | 2016 |
| Raptor UAS Ltd | Professional & scientific | 2018 |
| RAQ Health Limited | Health & social care | 2015 |
| Rare Earth Medburn Limited | Construction | 2016 |
| Rare Pull Games Ltd | Wholesale & retail | 2026 |
| Rarner Ltd | Professional & scientific | 2022 |
| RAS Online Limited | Professional & scientific | 2020 |
| Rascal Joinery and Coatings Ltd | Construction | 2020 |
| Rascals Barbershop Ltd | Other services | 2018 |
| Rascals Education Ltd | Education | 2024 |
| Rascals Newcastle Ltd | Other services | 2023 |
| Rashid Family Holding Company 1 Limited | Financial services | 2022 |
| Rashid Family Holding Company 2 Limited | Financial services | 2022 |
| Rasika Sandhill Ltd | Hospitality | 2023 |
| Raskl Limited | Manufacturing | 2009 |
| Ratchet Consulting Ltd | Professional & scientific | 2026 |
| Rate IT UK Ltd | Information & communication | 2018 |
| Rathmaker Ltd | Wholesale & retail | 2025 |
| Ration Vending Machine Ltd | Wholesale & retail | 2023 |
| Raulbrvcourier Ltd | Transport & logistics | 2025 |
| Raven GAS Services Limited | Construction | 2019 |
| Raven Kitchen Design Ltd | Wholesale & retail | 2011 |
| Raven Properties Limited | Households | 1979 |
| Raven Property Group Ltd | Real estate | 2026 |
| Ravenburn Care Ltd | Administrative & support | 2024 |
| Ravencon Ltd | Professional & scientific | 2018 |
| Ravenna Strategic Consulting Ltd | Professional & scientific | 2022 |
| Ravens Cards Ltd | Wholesale & retail | 2025 |
| Ravens Hair & Beauty Limited | Other services | 2001 |
| Ravensworth Garage (North East) Limited | Manufacturing | 1979 |
| Ravensworth Nurseries Ltd | Wholesale & retail | 2012 |
| RAVI9 Limited | Wholesale & retail | 2019 |
| RAW and More Limited | Wholesale & retail | 2025 |
| RAW Wall Ltd | Arts & recreation | 2025 |
| Rawhill Water Supply CIC | Water & waste | 2016 |
| Raww and Moree Ltd | Wholesale & retail | 2025 |
| RAY Fradge Ltd | Construction | 2026 |
| RAY Windfarm Fund Community Interest Company | Administrative & support | 2017 |
| Rayan Foods NCL Ltd | Hospitality | 2025 |
| Rayan Supermarket Newcastle Ltd | Wholesale & retail | 2025 |
| Rayan Travel & Services Ltd | Professional & scientific | 2025 |
| Rayjay Balloons & Events Ltd | Administrative & support | 2026 |
| Raykens Properties UK Limited | Real estate | 2024 |
| Raynoa Beauty Ltd | Wholesale & retail | 2020 |
| Raynoa Empowerment and Wellbeing CIC | Education | 2026 |
| Rayphillsector Ltd | Information & communication | 2019 |
| Rayson Homes Limited | Health & social care | 2003 |
| Rayyan NE Ltd | Hospitality | 2025 |
| RAZ and Rona Limited | Hospitality | 2019 |
| RAZ Razvan Surgery Limited | Professional & scientific | 2023 |
| Razak & Co Ltd. | Professional & scientific | 2003 |
| Razas (NE) Ltd | Health & social care | 2015 |
| Razik IT Solutions Ltd | Information & communication | 2013 |
| Razor Blade Technologies Ltd | Information & communication | 2025 |
| Razorwrayfitness Limited | Manufacturing | 2019 |
| Razza Cares Limited | Health & social care | 2025 |
| RB Borders Limited | Other services | 2025 |
| RB Construction & Renovation (North East) Limited | Administrative & support | 2016 |
| RB Heating and Plumbing Limited | Construction | 2023 |
| RB Pipetech Limited | Manufacturing | 2017 |
| RB Wind Ltd | Construction | 2026 |
| RBJ Developments Limited | Construction | 2015 |
| RBK Pet Supplies Limited | Manufacturing | 2025 |
| RBK Scaffolding Services Ltd | Construction | 2023 |
| RBL International Ltd | Real estate | 2020 |
| RBT Autos Ltd | Wholesale & retail | 2022 |
| RBV Energy Limited | Manufacturing | 2000 |
| RBZ Tech Solutions Ltd | Information & communication | 2026 |
| RC Hassan Locums Limited | Professional & scientific | 2016 |
| RC Investment NE Ltd | Real estate | 2023 |
| RC Parker Consultancy Ltd | Professional & scientific | 2025 |
| RCD Distribution Ltd | Wholesale & retail | 2021 |
| RCG Property Investments Ltd | Real estate | 2021 |
| Rchitecture Ltd | Professional & scientific | 2013 |
| RCJ Property Ltd | Real estate | 2023 |
| RCM Industries Ltd | Hospitality | 2023 |
| RCM Stocktaking Solutions Limited | Administrative & support | 2004 |
| RD Agency Ltd | Arts & recreation | 2016 |
| RD Cardiology Consulting Limited | Education | 2025 |
| RD Electrical & GAS Services Ltd | Construction | 2025 |
| RD Legacy Properties Limited | Real estate | 2026 |
| RD RR Investment Limited | Real estate | 2014 |
| RD Skills School Limited | Arts & recreation | 2017 |