| Queen BEE Coaching Ltd | Education | 2025 |
| Queensbury-It Ltd | Information & communication | 2020 |
| Quick Property Buy Ltd | Real estate | 2019 |
| Quidoxis Limited | Information & communication | 2012 |
| Quil Services Limited | Professional & scientific | 2021 |
| Quinn Legal Consultancy Ltd | Professional & scientific | 2018 |
| Quirky Education Ltd | Education | 2021 |
| Quotric Limited | Administrative & support | 2025 |
| R & D Roofing Limited | Construction | 2003 |
| R & M Property Group Ltd | Construction | 2017 |
| R & R Joinery Ltd | Construction | 2016 |
| R & R Lifting Services Limited | Construction | 2019 |
| R Tindall Group Ltd | Financial services | 2024 |
| R&J Higgins Limited | Administrative & support | 2015 |
| R. Clarke (Plumbers, Sale) Limited | | 1955 |
| R. Tindall (Fabricators) Holdings Limited | Financial services | 2012 |
| R.A. Smart (Holdings) Limited | Manufacturing | 1982 |
| R.K. Refrigeration Limited | Manufacturing | 1984 |
| R4 Utilities Ltd | Construction | 2012 |
| R5 Houses Ltd | Real estate | 2018 |
| R9 House Ltd | Real estate | 2022 |
| R9 Services Ltd | Hospitality | 2016 |
| RA Silverbells Ltd | Real estate | 2021 |
| Raaga Ltd | Extraterritorial | 2021 |
| Raajyogi Associates Limited | Transport & logistics | 2021 |
| Race Night Services Limited | Arts & recreation | 2003 |
| Radiant & Charm Ltd | Wholesale & retail | 2023 |
| Radiothonzld Ltd | Hospitality | 2022 |
| Radismile Ltd | Information & communication | 2025 |
| Radsora Ltd | Health & social care | 2015 |
| Raidore Limited | Professional & scientific | 2008 |
| Raihome Properties Limited | Real estate | 2024 |
| Railcore Consultancy Ltd | Construction | 2026 |
| Railsafe Nationwide Limited | Construction | 2025 |
| Rainford Ventures Limited | Financial services | 2022 |
| Rainton Arena Limited | Hospitality | 2019 |
| Rainy Refunds Ltd | Professional & scientific | 2024 |
| Rajshetty Limited | Health & social care | 2010 |
| Ralli (EOT) Ltd | Administrative & support | 2023 |
| Ralli Holdings Ltd | Financial services | 2021 |
| Ralli Ltd. | Professional & scientific | 2001 |
| Ralph Yates Consulting Ltd | Professional & scientific | 2017 |
| Ramanuja Properties Limited | Real estate | 2024 |
| Ramz Enterprises Ltd | Wholesale & retail | 2025 |
| Ranch Foods Limited | Hospitality | 2024 |
| Randall Roberts Consultancy Limited | Wholesale & retail | 2004 |
| Rapid Hire Group Limited | Administrative & support | 2022 |
| Raptars Stars Ltd | Health & social care | 2017 |
| RAQ MCR Properties Ltd | Real estate | 2025 |
| Rare Executives Ltd | Administrative & support | 2003 |
| Rasa Productions Limited | Arts & recreation | 2003 |
| Rashids (PVT) Ltd | Wholesale & retail | 2004 |
| Rasoi Khana Ltd | Hospitality | 2019 |
| Ravan BIO Limited | Professional & scientific | 2021 |
| Raven Valley Limited | Arts & recreation | 2019 |
| Ravenhurst (Salford) Limited | Households | 1971 |
| Rawfish Design Consultants Limited | Professional & scientific | 2004 |
| Rawrum Ltd | Wholesale & retail | 2022 |
| RAY Wilson Hair Limited | Other services | 2013 |
| Rayali Properties Ltd | Real estate | 2024 |
| Rayvolution Limited | Information & communication | 2019 |
| Rayyan Consultancy Limited | Professional & scientific | 2015 |
| RAZ44RAZ Pharma Ltd | Wholesale & retail | 2024 |
| RB4 Software Limited | Information & communication | 2025 |
| Rbmp Ltd. | Professional & scientific | 2016 |
| RC Asset Management Limited | Administrative & support | 2025 |
| RCP Consulting Services Limited | Administrative & support | 2023 |
| RD Biomass Ltd | Wholesale & retail | 2017 |
| RD3 Limited | Other services | 2022 |
| Rdesigns Build Ltd | Manufacturing | 2018 |
| RDG Hospitality Ltd | Hospitality | 2026 |
| RDJ Keiton Developments Ltd | Construction | 2021 |
| Re:Nu Dental Limited | Health & social care | 2019 |
| Reactive Home Maintenance Limited | Construction | 2025 |
| Readspeaker Limited | Information & communication | 2008 |
| Real Care 24 Limited | Administrative & support | 2022 |
| Real Dent Properties Limited | Households | 2024 |
| Real Ganga Ltd | Wholesale & retail | 2025 |
| Real Steel Holdings Limited | Construction | 2024 |
| Real Yorkshire Ltd | Administrative & support | 2015 |
| Realisations HML 2024 Limited | Professional & scientific | 2010 |
| Realtyrise Digital Ltd | Information & communication | 2024 |
| Rebecca Onyx Ltd | Wholesale & retail | 2016 |
| Rebecca Williams Accountants Limited | Professional & scientific | 2011 |
| Recapture Clinics UK Ltd | Health & social care | 2009 |
| Recruitment Leadership Ltd | Professional & scientific | 2013 |
| Red Accountancy & Consultancy Services Ltd | Professional & scientific | 2018 |
| Red Balloon Technology Limited | Information & communication | 2000 |
| Red Brick Road Creative Limited | Professional & scientific | 2012 |
| Red Equity LLP | | 2015 |
| Red House Media Ltd | Professional & scientific | 2026 |
| Red Moon 168 Ltd | Hospitality | 2026 |
| Red Orchid Property Ltd | Real estate | 2020 |
| Red Plum Group Limited | Real estate | 2019 |
| Red White & Black Ltd | Information & communication | 2025 |
| Redallah Ltd | Health & social care | 2014 |
| Redaman Limited | Wholesale & retail | 2018 |
| Reddish Joinery Limited | Construction | 1972 |
| Rede House Management (NE) Ltd | Real estate | 2019 |
| Redefine Properties Ltd | Real estate | 2021 |