| Q&H Properties Leeds Ltd | Real estate | 2026 |
| Q&T Property Ltd | Real estate | 2022 |
| Q'S Station Leeds Limited | Hospitality | 2024 |
| Q-Aims Global Limited | Professional & scientific | 2013 |
| Q-Dos Building Solutions Limited | Professional & scientific | 2015 |
| Q-Dos Haydon Bridge Ltd | Real estate | 2016 |
| Q-Dos Leeds Ltd | Real estate | 2018 |
| Q-Dos York Ltd | Real estate | 2022 |
| Q-Park (Taunton) Limited | Real estate | 2003 |
| Q-Park Limited | Real estate | 1983 |
| Q-Park Recharge UK Limited | Real estate | 2022 |
| Q-Park UK Limited | Professional & scientific | 2001 |
| Q.E.D. Environmental Systems Limited | Manufacturing | 1985 |
| Q.E.D. Investment Company Ltd | Real estate | 2023 |
| Q21 Venture Ltd | Hospitality | 2022 |
| Q9 Trading Limited | Wholesale & retail | 2013 |
| QA Software Solutions Ltd | Information & communication | 2020 |
| QA Target Limited | Information & communication | 2025 |
| Qaaqa.Com Services Limited | Education | 2026 |
| Qaba 2 Ltd | Hospitality | 2022 |
| Qaba Ltd | Hospitality | 2020 |
| QAC Security Ltd | Financial services | 2018 |
| QAC Solutions Limited | Professional & scientific | 2017 |
| QAD Architects Ltd | Professional & scientific | 2005 |
| QAF Car Sales Leeds Ltd | Wholesale & retail | 2023 |
| Qaitul Ltd | Transport & logistics | 2025 |
| Qalb Labs Limited | Manufacturing | 2026 |
| Qalbex Ltd | Wholesale & retail | 2025 |
| Qalla Market Ltd | Wholesale & retail | 2025 |
| Qamar Y Mart Limited | Other services | 2023 |
| Qamarek Consulting Limited | Information & communication | 2018 |
| QAS Property Holdings Ltd | Real estate | 2020 |
| Qasim Sharif Ltd | Health & social care | 2012 |
| Qasims Kitchen Ltd | Hospitality | 2025 |
| Qaworkforce Ltd | Information & communication | 2012 |
| Qayyah's Trading UK Ltd | Administrative & support | 2019 |
| QBH (Andover) Ltd | Construction | 2023 |
| QBH (Topaz) Ltd | Real estate | 2018 |
| Qbilix Ltd | Information & communication | 2020 |
| Qbol Group Limited | Financial services | 2018 |
| Qbol World Limited | Wholesale & retail | 2023 |
| QBS Beauty Lounge Ltd | Other services | 2019 |
| QBS Properties Ltd | Real estate | 2020 |
| Qbyte Ltd | Information & communication | 2023 |
| QCS Holdings Limited | Financial services | 2021 |
| Qdos SBL Group Limited | Financial services | 2018 |
| Qentra Ltd | Wholesale & retail | 2025 |
| QFC Taimur Limited | Hospitality | 2024 |
| QG Place (Flat a) Limited | Real estate | 2024 |
| Qgluk Limited | Other services | 2022 |
| QH Accountants Limited | Professional & scientific | 2016 |
| QH Associates Ltd | Professional & scientific | 2013 |
| QH at the Laurels Limited | Administrative & support | 2012 |
| QH Marketing Services Ltd | Wholesale & retail | 2025 |
| QHA Holdings Ltd | Construction | 2020 |
| QHG Limited | Real estate | 2024 |
| Qimets Repsin Limited | Public administration | 2020 |
| Qinc Limited | Information & communication | 2020 |
| Qing & Tian Takeaway Limited | Hospitality | 2019 |
| Qingfaisal Ltd | Real estate | 2023 |
| Qintec Electrical Consulting Limited | Professional & scientific | 2014 |
| Qipharmaherbs Limited | Wholesale & retail | 2025 |
| Qlec Electrical Ltd | Construction | 2023 |
| Qline IT Limited | Information & communication | 2020 |
| QMJ Property Ltd | Real estate | 2018 |
| Qnch Ltd | Wholesale & retail | 2026 |
| Qntm Investments Ltd | Real estate | 2021 |
| Qoria UK Limited | Information & communication | 2021 |
| QP Renovation Limited | Construction | 2025 |
| QPQ Talent Solutions Ltd | Administrative & support | 2015 |
| QR Home Care Limited | Health & social care | 2026 |
| QRC Projects Ltd | Professional & scientific | 2023 |
| QS International Ltd | Professional & scientific | 2019 |
| QS24 Careservices Limited | Health & social care | 2025 |
| Qsada Limited | Administrative & support | 2023 |
| Qszx Ltd | Other services | 2026 |
| QT Investments Limited | Real estate | 2024 |
| QT Professional Services Limited | Education | 2013 |
| Qtap Systems Limited | Hospitality | 2017 |
| Qtrack Consulting Ltd | Professional & scientific | 2024 |
| Quad a Properties Ltd | Real estate | 2025 |
| Quadrilaterals Limited | Professional & scientific | 2017 |
| Quadrill Ltd | Administrative & support | 2013 |
| Quadrum Bars Payroll Limited | Professional & scientific | 2014 |
| Quadrum Leisure (Sheffield) Limited | Hospitality | 2014 |
| Quair Books Ltd | Wholesale & retail | 2024 |
| Qualia Commercial Ltd | Professional & scientific | 2016 |
| Qualis Training Limited | Education | 2018 |
| Qualitas Corporate Limited | Administrative & support | 2022 |
| Qualitas Supply Chain Ltd | Wholesale & retail | 2022 |
| Quality and Professional Limited | Professional & scientific | 2024 |
| Quality Bearings Online Ltd | Wholesale & retail | 2012 |
| Quality Beauty Store Ltd | Wholesale & retail | 2013 |
| Quality Building and Rendering Services Ltd | Construction | 2026 |
| Quality Chair Frames Limited | Manufacturing | 2019 |
| Quality Control Security Ltd | Administrative & support | 2019 |
| Quality Living Property Ltd | Real estate | 2016 |
| Quality Maintenance Limited | Construction | 2006 |
| Quality Motors Leeds Ltd | Wholesale & retail | 2019 |
| Quality Plastics Ltd | Manufacturing | 2015 |