| Qualsafe Academy Limited | Education | 2020 |
| Qualsafe Limited | Information & communication | 2000 |
| Quantas Transmissions Ltd | Wholesale & retail | 2025 |
| Quantech Digital Ltd | Information & communication | 2022 |
| Quantira Ltd | Wholesale & retail | 2025 |
| Quantum Concierge Services Limited | Transport & logistics | 2022 |
| Quantum EX Limited | Information & communication | 2026 |
| Quantum Product Design Ltd | Professional & scientific | 2013 |
| Quantum Research Limited | Information & communication | 2024 |
| Quantum Technical Limited | Professional & scientific | 2017 |
| Quantumshields Ltd | Information & communication | 2025 |
| Quarry Auto Spares Limited | Wholesale & retail | 2004 |
| Quarteds Limited | Administrative & support | 2015 |
| Quartermile Automotive Ltd | Wholesale & retail | 2025 |
| Quartz Limited | Extraterritorial | 2004 |
| Quasar Consulting Services Ltd | Real estate | 2015 |
| Quasar E.P.C Limited | Professional & scientific | 2026 |
| Quasar Tiles (UK) Limited | Wholesale & retail | 2020 |
| Qube Epos (North) Ltd | Wholesale & retail | 2011 |
| Qubert Limited | Professional & scientific | 2023 |
| QUBERT247 Limited | Other services | 2025 |
| Quciker Ltd | Wholesale & retail | 2025 |
| QUE Locum Ltd | Health & social care | 2015 |
| QUE Packaging Limited | Manufacturing | 2003 |
| Quebec Mill Management Company Limited | Real estate | 2013 |
| Queda Holdings Ltd | Households | 2017 |
| Queensbury Celtic Football Club Limited | Arts & recreation | 2009 |
| Queensbury Electrical Ltd | Construction | 2024 |
| Queensbury Private Day Nursery Limited | Education | 2016 |
| Quehealthcare Limited | Health & social care | 2024 |
| Queras Limited | Real estate | 2024 |
| Quest Holdings Northern Limited | Construction | 2020 |
| Quest Solutions (UK) Ltd | Construction | 2003 |
| Quest UK Holdings Limited | Financial services | 2024 |
| Quick Balti Ltd | Hospitality | 2024 |
| Quick Barber Ltd | Other services | 2025 |
| Quick Car Hire Ltd | Administrative & support | 2021 |
| Quick Fit Mobile Ltd | Wholesale & retail | 2025 |
| Quick Pick Deals Ltd | Wholesale & retail | 2025 |
| Quick Send Limited | Hospitality | 2022 |
| Quick Start Batteries Limited | Wholesale & retail | 2021 |
| Quick Taxi (BDF) Ltd | Administrative & support | 2024 |
| Quick Vehicle Repairs Ltd | Wholesale & retail | 2024 |
| Quickhit Mart Limited | Wholesale & retail | 2025 |
| Quickstop Delivery Ltd | Wholesale & retail | 2024 |
| Quickstop Market Ltd | Wholesale & retail | 2024 |
| Quidvis Limited | Professional & scientific | 2016 |
| Quietfield Sanctuary Ltd | Professional & scientific | 2025 |
| Quiff Corp Limited | Information & communication | 2020 |
| Quiksy Ltd | Transport & logistics | 2026 |
| Quodra Technologies Ltd | Information & communication | 2022 |
| Quorn Dental Practice Limited | Health & social care | 2021 |
| Qurb Smart Solutions Limited | Administrative & support | 2025 |
| QVP Solutions Ltd | Wholesale & retail | 2019 |
| Qwest Homes Ltd | Real estate | 2022 |
| Qzeb Limited | Wholesale & retail | 2016 |
| QZK Ltd | Financial services | 2014 |
| R & a Property (BD) Ltd | Real estate | 2023 |
| R & a Recruitment Consultancy Ltd | Administrative & support | 2009 |
| R & a Smith & Sons Limited | Construction | 1992 |
| R & J Dhillons Store Limited | Wholesale & retail | 2014 |
| R & K Hire Ltd | Manufacturing | 2009 |
| R & M Emporium Limited | Wholesale & retail | 2017 |
| R & M Retail Ltd | Wholesale & retail | 2021 |
| R & N Properties Limited | Real estate | 1998 |
| R & P Bhalla Newsagents/Off Licence Ltd | Wholesale & retail | 2026 |
| R & S Financial Consultants UK Ltd. | Financial services | 2014 |
| R & S Legal Services Ltd | Professional & scientific | 2014 |
| R & S UTH Properties Ltd | Real estate | 2024 |
| R & T Properties (Yorkshire) Limited | Transport & logistics | 2020 |
| R a Dhillon Properties Ltd | Real estate | 2025 |
| R a Safe Travel Ltd | Transport & logistics | 2022 |
| R ALI Limited | Health & social care | 2009 |
| R Blackman Childminding Limited | Administrative & support | 2014 |
| R Brook Consulting Ltd | Professional & scientific | 2026 |
| R Brown Contractors Limited | Construction | 2016 |
| R Chhiba Ltd | Households | 2025 |
| R D Laser Ltd | Other services | 2025 |
| R Davey Motors Ltd | Wholesale & retail | 2018 |
| R Dawson Architect Riba Limited | Professional & scientific | 2016 |
| R E Recruitments Ltd | Wholesale & retail | 2024 |
| R F Media & Publishing Ltd | Information & communication | 2015 |
| R G Properties Yorkshire Ltd | Real estate | 2022 |
| R H Enterprises (Property) Limited | Real estate | 2020 |
| R H Enterprises (Yorkshire) Limited | Health & social care | 2018 |
| R H Plates Ltd | Manufacturing | 2019 |
| R J Accounting Solutions Limited | Professional & scientific | 2011 |
| R J Housing Ltd | Real estate | 2024 |
| R J Services and Developments Ltd | Construction | 2022 |
| R Jewellers Ltd | Wholesale & retail | 2022 |
| R M Driveways Limited | Construction | 2024 |
| R M I Holdings Limited | Professional & scientific | 2021 |
| R M I Limited | Other services | 2007 |
| R M Miller Estates Limited | Real estate | 2025 |
| R Malik Holdings Limited | Financial services | 2026 |
| R Mccann Ltd | Manufacturing | 2022 |
| R Mupfurutsa Trading Ltd | Financial services | 2019 |
| R Paul Builders Ltd | Construction | 2015 |
| R S BFD Ltd | Hospitality | 2019 |
| R S Garments Limited | Manufacturing | 2014 |