| Quantrellis Ltd | Extraterritorial | 2026 |
| Quantsult Ltd | Professional & scientific | 2014 |
| Quantum Branding Ltd | Professional & scientific | 2024 |
| Quantum Construction (Uk)Limited | Construction | 2004 |
| Quantum Electrical Contractors Ltd | Construction | 2025 |
| Quantum Forge Systems Ltd | Extraterritorial | 2026 |
| Quantum Office Assist Ltd | Administrative & support | 2014 |
| Quantum Potential Limited | Professional & scientific | 1995 |
| Quantum Property and Developments Ltd | Real estate | 2025 |
| Quantum Refurbishment & Maintenance Ltd | Construction | 2024 |
| Quantum Traffic Management (Eastern) Ltd | Construction | 2024 |
| Quantumleap Tech Ltd | Extraterritorial | 2026 |
| Quantumnest Technologies Ltd | Information & communication | 2025 |
| Quantumsupplies Ltd | Manufacturing | 2025 |
| Quantumvista Labs Ltd | Extraterritorial | 2025 |
| Quartet Homes Ltd | Real estate | 2026 |
| Quartz Hotel Collection Ltd | Financial services | 2025 |
| Quatris Capital Limited | Professional & scientific | 2022 |
| QUE4 Ltd | Construction | 2017 |
| Queen Street Bakehouse Ltd | Manufacturing | 2020 |
| Queens Head Limited | Hospitality | 2023 |
| Queens Road Design Centre Ltd | Real estate | 2015 |
| Queensferry Car Breakers Limited | Wholesale & retail | 2016 |
| Quenby & Vale Ltd | Extraterritorial | 2026 |
| Quenby Works Ltd | Extraterritorial | 2026 |
| Quentharis Advisory Ltd | Extraterritorial | 2026 |
| Quentiva Digital Ltd | Extraterritorial | 2026 |
| Quercus Online Ltd | Information & communication | 2013 |
| Quest Finance Ltd | Financial services | 2019 |
| Questbit Ltd | Information & communication | 2025 |
| Quick Domain Register Ltd | Other services | 2009 |
| Quick Media Ltd | Real estate | 2021 |
| Quick Response Services Ltd | Education | 2024 |
| Quick Shift Garage Ltd | Wholesale & retail | 2025 |
| Quicker Sort Limited | Transport & logistics | 2026 |
| Quicksello Ltd | Wholesale & retail | 2025 |
| Quicksteps (Doncaster) Ltd | Other services | 2003 |
| Quintesse Rejuvenetics Ltd | Other services | 2021 |
| Quirk & Quill Limited | Extraterritorial | 2026 |
| Quiz-Uk Ltd | Arts & recreation | 2018 |
| Quorvane Capital Ltd | Extraterritorial | 2026 |
| Quova Company Ltd | Wholesale & retail | 2016 |
| Qvardis Intelligent Solutions Ltd | Professional & scientific | 2022 |
| QWE Group Ltd | Real estate | 2025 |
| R & B Pabial Investments Limited | Real estate | 2026 |
| R & E Internal Wall and Building Insulation Specialists Ltd | Construction | 2023 |
| R & G Properties Limited | Real estate | 2002 |
| R & M Housing Limited | Real estate | 2025 |
| R & M Joinery Manufacturers Ltd | Manufacturing | 2007 |
| R & M Smithson (Farming) Limited | Agriculture & fishing | 1981 |
| R & R Town Planning Ltd | Extraterritorial | 2021 |
| R & W Food Services Limited | Hospitality | 2025 |
| R a Brickwork & Construction Ltd | Construction | 2020 |
| R a Coates Solutions Ltd | Professional & scientific | 2025 |
| R Bradburn Properties Limited | Real estate | 2017 |
| R C Fabrics Ltd | Wholesale & retail | 2015 |
| R Christie and Sons Limited | Construction | 2015 |
| R D F Caterers Limited | Hospitality | 2021 |
| R D Mini Market Limited | Wholesale & retail | 2025 |
| R Davis Holdings Ltd | Real estate | 2023 |
| R Dunn Scaffolding Limited | Construction | 2025 |
| R E Arnett Limited | Professional & scientific | 2015 |
| R G Hughes Ltd | Construction | 2003 |
| R Horden TM Ltd | Public administration | 2025 |
| R J C Todd Limited | Agriculture & fishing | 2008 |
| R Janulewicz Ltd | Transport & logistics | 2025 |
| R Joyce Engineering Ltd | Professional & scientific | 2021 |
| R K C Promotions Limited | Arts & recreation | 2017 |
| R M Events Ltd | Other services | 2017 |
| R M Poole Decorating Limited | Construction | 2004 |
| R Marriott Holdings Ltd | Financial services | 2024 |
| R Munteanu Limited | Transport & logistics | 2025 |
| R P Properties & Developments Limited | Real estate | 2016 |
| R P Wholesale Limited | Wholesale & retail | 2003 |
| R Rail Limited | Construction | 2011 |
| R S Decorating Limited | Construction | 2004 |
| R S Sales (Doncaster) Limited | Extraterritorial | 2013 |
| R S Vision Consulting Limited | Professional & scientific | 2023 |
| R Stirland (Doncaster) Limited | Construction | 1982 |
| R T Slattery Consulting Ltd | Professional & scientific | 2025 |
| R Turton Ltd | Construction | 2022 |
| R W Cladding Limited | Construction | 2022 |
| R Wheelz Ltd | Construction | 2022 |
| R&B Retreat Property Ltd | Real estate | 2025 |
| R&C Expers Logistics Ltd | Transport & logistics | 2025 |
| R&C Properties Limited | Real estate | 2020 |
| R&D Global Work Ltd | Hospitality | 2021 |
| R&D Property Holdings Ltd | Real estate | 2025 |
| R&K Rims Limited | Wholesale & retail | 2022 |
| R&P Trans Team Ltd | Transport & logistics | 2020 |
| R&R Farming Estates Ltd | Agriculture & fishing | 2024 |
| R&R Holdings (Yorkshire) Ltd | Real estate | 2024 |
| R&S Properties Group Limited | Real estate | 2023 |
| R&S Security Specialists Limited | Construction | 2011 |
| R-Line Autogroup Limited | Wholesale & retail | 2025 |
| R. & B. Rock Drillers Limited | Construction | 1977 |
| R. Carr Properties Limited | Real estate | 2002 |
| R. M. Denton Limited | Health & social care | 2011 |
| R. Richardson Electrical Ltd | Construction | 2017 |
| R. Roofing Limited | Construction | 2024 |