| Pygloo Properties Limited | Real estate | 2024 |
| Pygro Estates Limited | Real estate | 2022 |
| Pygro Limited | Information & communication | 2018 |
| Pymt Limited | | 2015 |
| Pynea Holdings Limited | Information & communication | 2020 |
| Pynea Technology Limited | Information & communication | 2020 |
| Pyramid Innovation Limited | Manufacturing | 2012 |
| Pyramid Testing Services Limited | Information & communication | 2013 |
| Pyramidal Ltd. | Construction | 2019 |
| Pyrox Precision Technologies (UK) Limited | Wholesale & retail | 2025 |
| Pzcz Consulting Limited | Information & communication | 2024 |
| Q Bees Lounge Ltd | Hospitality | 2023 |
| Q Dent Ltd | Health & social care | 2021 |
| Q Flooring Holdings Limited | Professional & scientific | 2003 |
| Q Flooring Systems Limited | Construction | 1992 |
| Q S J Link UK Limited | Wholesale & retail | 2017 |
| Q20 Security Solutions Limited | Professional & scientific | 2013 |
| Qa/Cqv Consultancy Limited | Professional & scientific | 2023 |
| Qasrms Limited | Administrative & support | 2018 |
| QC Poynton Ltd | Real estate | 2015 |
| QDE Publishing Limited | Information & communication | 2024 |
| QED Investors UK Limited | Financial services | 2017 |
| QES Holdings Limited | Financial services | 2019 |
| QF Medics Limited | Health & social care | 2018 |
| QLC Trading Company Ltd | Wholesale & retail | 2019 |
| Qmyre Consulting Limited | Administrative & support | 2015 |
| Qnity Consultants Limited | Professional & scientific | 2019 |
| Qnups Limited | Administrative & support | 2019 |
| Qompter Limited | Administrative & support | 2006 |
| Qproject Solutions Ltd | Construction | 2025 |
| QS Solutions (NW) Ltd | Professional & scientific | 2018 |
| Qsda Ltd | Administrative & support | 2006 |
| Quadplex Limited | Information & communication | 2024 |
| Quadrant North Road Ltd | Real estate | 2025 |
| Quadrant Windows Urmston Limited | Construction | 2013 |
| Quadstone Limited | Information & communication | 2026 |
| Qualitas IMS Limited | Professional & scientific | 2019 |
| Quality Care Concerns Limited | Professional & scientific | 2025 |
| Quality Care Matters 2 US Ltd | Professional & scientific | 2024 |
| Quality CQV Limited | Professional & scientific | 2025 |
| Quality Fitters (Hale Barns) Limited | Wholesale & retail | 1973 |
| Quality Holdings Ltd | Financial services | 2022 |
| Quality Locum Solutions Limited | Administrative & support | 2014 |
| Quality Matters Consulting Limited | Professional & scientific | 2020 |
| Quantum Auditing Ltd | Professional & scientific | 2017 |
| Quantum WMS Solutions Limited | Information & communication | 2022 |
| Quasar Void Limited | Information & communication | 2026 |
| Quay Inns Limited | Hospitality | 1997 |
| Quay Point Planning Limited | Financial services | 2017 |
| Qubik Properties Ltd | Real estate | 2021 |
| Qudos Digital Ltd | Information & communication | 2019 |
| Queens Villa Investments Limited | Professional & scientific | 2017 |
| Queghan Civil Engineering Limited | Wholesale & retail | 1969 |
| Quest Management Solutions Limited | Administrative & support | 2017 |
| Quest Park Management Company (Heywood) Limited | Real estate | 2008 |
| Questas Limited | Administrative & support | 2005 |
| Questel-Lewis Consulting Ltd | Administrative & support | 2008 |
| Questionmark Computing Limited | Information & communication | 1988 |
| Quickendene Limited | Professional & scientific | 2005 |
| Quickmere Court (Management) Limited | Other services | 2003 |
| Quigbuild Limited | Construction | 2013 |
| Quinary Estates Limited | Construction | 2018 |
| Quinn International Properties Ltd | Households | 2024 |
| Quirk Project Support Ltd | Arts & recreation | 2017 |
| Quod Strategy Ltd | Professional & scientific | 2013 |
| Quorum Commercial Limited | Professional & scientific | 1993 |
| Quorum Development Management Limited | Real estate | 2015 |
| Quorum Developments Limited | Construction | 1991 |
| Quorum Estates Limited | Construction | 1993 |
| Quorum Industrial Properties Limited | Real estate | 2015 |
| Quorum Property Services Ltd | Real estate | 2015 |
| Quote Co Limited | Financial services | 2024 |
| QV Auditors Ltd. | Administrative & support | 2021 |
| QV Holdings Ltd. | Other services | 2023 |
| QXM International Ltd | Professional & scientific | 2020 |
| R & P Pennington Ltd | Agriculture & fishing | 2025 |
| R & S Power Solutions Limited | Administrative & support | 2014 |
| R 4 Recruitment Limited | Administrative & support | 2019 |
| R and D Specialists Limited | Professional & scientific | 2017 |
| R England Ltd | Professional & scientific | 2017 |
| R F & SON Contracting | Agriculture & fishing | 2016 |
| R Fountain Holdings Limited | Financial services | 2016 |
| R J Clark Limited | Professional & scientific | 2023 |
| R M Courier Services Limited | Transport & logistics | 1999 |
| R M Wood Limited | Health & social care | 2025 |
| R S Paving Limited | Administrative & support | 2016 |
| R Warrington Limited | Administrative & support | 2015 |
| R&B Private Ltd | Real estate | 2021 |
| R-Gen Renewables Limited | Construction | 2020 |
| R. Fountain & SON | Agriculture & fishing | 1989 |
| R. K. Building Services (Ashton) Limited | Construction | 2009 |
| R.A. Bennett & Partners Ltd. | Professional & scientific | 1972 |
| R.A. Smyles Ltd | Health & social care | 2015 |
| R.E. Enginering Limited | Professional & scientific | 2012 |
| R.M. DE Freitas Limited | Real estate | 1996 |
| R.P Bennett Limited | Professional & scientific | 2024 |
| R2R Flow UK Limited | Hospitality | 2026 |
| R3 Technologies Ltd | Information & communication | 2024 |
| R3LOCATION Limited | Administrative & support | 2011 |
| R4 Performance Ltd | Information & communication | 2018 |