| RDA Kitchens Ltd | Construction | 2019 |
| Rdbc Properties Ltd | Real estate | 2026 |
| RDH Business Finance Consultants Limited | Financial services | 2000 |
| RDH NW Ltd | Professional & scientific | 2022 |
| RDK Properties Ltd | Hospitality | 2006 |
| Rdlg Joinery & Renovations Ltd | Construction | 2023 |
| Rdlp Property Limited | Real estate | 2026 |
| RDM Properties (NW) Ltd | Real estate | 2025 |
| RDN Investments Ltd | Real estate | 2023 |
| Rdpj Limited | Hospitality | 2013 |
| RDS Express Ltd | Transport & logistics | 2023 |
| RDS Services Holdings Limited | Administrative & support | 2000 |
| RDV Consulting Services Limited | Information & communication | 2015 |
| RDV Tutors Ltd | Education | 2021 |
| Rdwan Food & Dessert Ltd | Wholesale & retail | 2025 |
| RE GUO Ltd | Hospitality | 2024 |
| RE Raise Design Ltd | Information & communication | 2011 |
| Re-Culture Limited | Administrative & support | 2025 |
| Re-Focus & Rise CIC | Information & communication | 2026 |
| Re-Formed Development C.I.C. | Education | 2011 |
| Re-Gen Eco Homes Limited | Construction | 2018 |
| Re/Max Global Operations Ltd | Real estate | 2024 |
| REA Capital Group Ltd | Financial services | 2015 |
| REA Property Limited | Real estate | 2024 |
| REA Steel Windows and Doors Limited | Manufacturing | 2023 |
| Reach ALL Marketing Limited | Wholesale & retail | 2019 |
| Reach Cargo Services Ltd | Extraterritorial | 2016 |
| Reach for the Stars Care Services Ltd | Health & social care | 2025 |
| Reach Training Ltd | Education | 2022 |
| React & Respond Solutions Ltd | Education | 2020 |
| React Clothing Ltd | Wholesale & retail | 2026 |
| React Develop Ltd | Professional & scientific | 2026 |
| React Fashion Ltd | Wholesale & retail | 2021 |
| React Professional Services Limited | Extraterritorial | 2011 |
| React Refurbishments Ltd | Construction | 2021 |
| Reactive Scaffold Ltd | Construction | 2023 |
| REACTIVE8 Emergency Services Limited | Construction | 2021 |
| Reader Trading Limited | Professional & scientific | 2016 |
| Reads Lettings Limited | Households | 2017 |
| Ready Assist Studio Ltd | Administrative & support | 2025 |
| Ready Education (UK) Limited | Information & communication | 2025 |
| Ready Salted | Administrative & support | 2019 |
| Ready Teddy Go Competitions Ltd | Wholesale & retail | 2024 |
| Ready to Cart Ltd | Wholesale & retail | 2025 |
| Readymould Limited | Manufacturing | 2019 |
| Readyset Consultancy Ltd | Professional & scientific | 2026 |
| REAKT360 Ltd | Information & communication | 2019 |
| Real & Unfiltered TT Ltd | Professional & scientific | 2026 |
| Real 5 Ltd | Professional & scientific | 2017 |
| Real and Authentic Representations of Africans and Caribbeans Education Project CIC | Professional & scientific | 2021 |
| Real Care Homes Limited | Health & social care | 2023 |
| Real Design and Build Ltd | Construction | 2025 |
| Real Estate Limited | Extraterritorial | 2001 |
| Real Estate Property Investments Ltd | Real estate | 2010 |
| Real Finance Group Ltd | Financial services | 2007 |
| Real Gift Limited | Wholesale & retail | 2014 |
| Real Green Energy Ltd | Energy | 2026 |
| Real Grounding Ltd | Wholesale & retail | 2025 |
| Real Moments Limited | Information & communication | 2024 |
| Real Place Solutions Limited | Professional & scientific | 2013 |
| Real Projects ( NW) Ltd | Real estate | 2016 |
| Real Pyjamas Limited | Financial services | 2023 |
| Real Skills Training Ltd | Education | 2011 |
| Real Trading Team Ltd | Education | 2026 |
| Real World Management Solutions Limited | Professional & scientific | 2007 |
| Realcleanwindows Ltd | Other services | 2020 |
| Realise Properties Ltd | Real estate | 2020 |
| Realise Residential Limited | Real estate | 2022 |
| Realistic Music Limited | Arts & recreation | 1997 |
| Reality Scout Ltd | Agriculture & fishing | 2015 |
| Reality to CAD Services Ltd | Professional & scientific | 2026 |
| Really Epic Dog Ltd | Information & communication | 2012 |
| Really Hair Extensions Ltd | Other services | 2024 |
| Really Resin Limited | Wholesale & retail | 2024 |
| Really Useful Digital Media Limited | Information & communication | 2006 |
| Realm Born Products Limited | Manufacturing | 2025 |
| Realreelai Ltd | Information & communication | 2025 |
| Realtec Limited | Information & communication | 2011 |
| Realty Ventures Limited | Real estate | 2020 |
| Realway Booze ID Ltd | Wholesale & retail | 2023 |
| Realworth Consulting Limited | Professional & scientific | 2012 |
| Reardon Cleaning Services Ltd | Administrative & support | 2010 |
| Reardon Enterprises Ltd | Wholesale & retail | 2025 |
| Reason Investments (N.W) Ltd | Real estate | 2018 |
| Rebdec Holdings Limited | Administrative & support | 2011 |
| Rebecca Pearson Speech and Language Therapy Limited | Education | 2020 |
| Rebecca Trading Limited | Professional & scientific | 2018 |
| Rebecca's Interiors Ltd | Wholesale & retail | 2025 |
| Rebecca’S Physiotherapy Rehab and Sports Massage Limited | Other services | 2025 |
| Rebekah Foot Properties Ltd | Households | 2023 |
| Rebekah's Retreat Limited | Health & social care | 2014 |
| Rebekahs Food and Drink Ltd | Hospitality | 2024 |
| Rebel Restaurants Churchtown Ltd | Hospitality | 2025 |
| Rebel Restaurants Formby Ltd | Hospitality | 2022 |
| Rebel Restaurants Group Holdings Ltd | Financial services | 2023 |
| Rebel Restaurants Group Ltd | Hospitality | 2022 |
| Rebel Restaurants Liverpool Ltd | Hospitality | 2017 |
| Rebel Restaurants Southport Ltd | Hospitality | 2023 |
| Rebel Rock Media Ltd | Information & communication | 2025 |
| Rebel Rocket Productions Limited | Information & communication | 2024 |