| PSG Foods Limited | Hospitality | 2025 |
| Ptb.Lewisharper Ltd | Other services | 2019 |
| Pubs & Grub Limited | Hospitality | 2012 |
| Puddleducks Under Fives Ltd | Health & social care | 2021 |
| Pudel Studio Ltd | Information & communication | 2025 |
| Pugh's Environmental Consultancy & Law Advisors Ltd | Professional & scientific | 2024 |
| Pullet Care Ltd | Agriculture & fishing | 2020 |
| Pulsar Lighting Solutions Limited | Extraterritorial | 1968 |
| Pulse ERP Solutions Ltd | Information & communication | 2014 |
| Pumapaq Ltd | Construction | 2003 |
| Purdel Limited | Transport & logistics | 2017 |
| Pure Construct Ltd | Construction | 2023 |
| Pure Theatre Ltd | Manufacturing | 2003 |
| Pure Vibez Events Ltd | Hospitality | 2025 |
| Purecare & Aroma Essentials Ltd | Wholesale & retail | 2025 |
| Purforming Limited | Administrative & support | 2003 |
| Purity Gym Limited | Arts & recreation | 2017 |
| Purple Frog IT Limited | Information & communication | 2010 |
| Purple Frog Limited | Information & communication | 2006 |
| Purple Frog Systems Ltd | Information & communication | 2006 |
| Purple Motor Homes Limited | Wholesale & retail | 2018 |
| PWF Holdings Limited | Administrative & support | 2015 |
| PYC Online Ltd | Wholesale & retail | 2024 |
| Pyda Property Ltd | Real estate | 2025 |
| Pyromaster Studios Ltd | Information & communication | 2014 |
| PZB International Ltd | Wholesale & retail | 2026 |
| Q Capital Holdings Limited | Financial services | 2026 |
| Q Commercial Finance (UK) Limited | Financial services | 2018 |
| Q Financial Services (UK) Limited | Financial services | 2016 |
| Q Group Holdings Limited | Financial services | 2022 |
| Q L Tree Care Limited | Agriculture & fishing | 2025 |
| Q Landscapes Limited | Administrative & support | 2016 |
| Q Technical Services (UK) Ltd | Construction | 1999 |
| Q.E.D. Conversions Limited | Construction | 2013 |
| Q9E Limited | Professional & scientific | 2016 |
| QA (Ironbridge) Limited | Manufacturing | 1983 |
| QA (Shropshire) Limited | Manufacturing | 2023 |
| QA (Telford) Limited | Professional & scientific | 2002 |
| QA Consultancy Services Ltd | Professional & scientific | 2002 |
| QA Craven Arms Ltd | Wholesale & retail | 2023 |
| QA Kitchens and Bathrooms Ltd | Wholesale & retail | 2020 |
| QA Madeley Ltd | Wholesale & retail | 2023 |
| QA Market Drayton Ltd | Wholesale & retail | 2023 |
| QA Peachy Solutions Limited | Information & communication | 2021 |
| QA Stafford Ltd | Wholesale & retail | 2023 |
| QA UK Group Ltd | Professional & scientific | 2023 |
| QA Wolverhampton Ltd | Wholesale & retail | 2023 |
| Qalm Ltd | Information & communication | 2022 |
| QB Electronic Repairs Ltd | Wholesale & retail | 2024 |
| QC Properties & Investments Limited | Financial services | 2014 |
| QCD Autocentre Milton Keynes Ltd | Wholesale & retail | 2019 |
| Qdos Group Limited | Construction | 2020 |
| QI Commercial Flooring Ltd | Construction | 2022 |
| QI Property Development Ltd | Construction | 2024 |
| QI Refurbs and Contracts Ltd | Construction | 2019 |
| QLF Production Limited | Manufacturing | 2015 |
| Qmerit Electrification UK Limited | Construction | 2022 |
| QN Construction Ltd | Construction | 2025 |
| QNA Consulting (UK) Ltd | Professional & scientific | 2014 |
| QOI Ltd | Information & communication | 2020 |
| Qqrp Ltd | Information & communication | 2019 |
| QR8 Automotive Ltd | Wholesale & retail | 2025 |
| QTM Global Services Limited | Information & communication | 2010 |
| QTM Group Limited | Information & communication | 2018 |
| QTM Recruitment Limited | Administrative & support | 2017 |
| Qualclean Limited | Administrative & support | 2017 |
| Quality Industries Holdings Ltd | Financial services | 2016 |
| Quantum Agro-Tech Limited | Transport & logistics | 2021 |
| Quantux Ltd | Other services | 2023 |
| QUASHFAM5 Limited | Construction | 2023 |
| Qubick Ltd | Other services | 2019 |
| Queanizin Limited | Hospitality | 2015 |
| Queen Mode on Limited | Transport & logistics | 2023 |
| Querky Developments Ltd | Construction | 2019 |
| Querky Inns Ltd | Hospitality | 2014 |
| Querky Leases Ltd | Hospitality | 2015 |
| Quest Healthcare Limited | Health & social care | 2022 |
| Quick Electro Fit Limited | Professional & scientific | 2016 |
| Quickfix Cleaning Services Ltd | Administrative & support | 2025 |
| Quik FIX Auto Care Ltd | Wholesale & retail | 2024 |
| Quikzii Ltd | Wholesale & retail | 2025 |
| Quil Care Group Limited | Administrative & support | 2013 |
| Quimek Ltd | Other services | 2020 |
| Quin Plant Hire Ltd | Real estate | 2008 |
| Quizcards Ltd | Information & communication | 2024 |
| Qwik Limited | Information & communication | 2011 |
| Qwikfit Windscreens Limited | Wholesale & retail | 2013 |
| Qwikfix Windscreens Ltd | Wholesale & retail | 2026 |
| R & B UK JT Holdings Ltd | Financial services | 2025 |
| R & E Kennerley Limited | Agriculture & fishing | 2015 |
| R & S Building & Maintenance Ltd | Construction | 2007 |
| R and S Windows Limited | Construction | 2006 |
| R Hand Services Ltd | Construction | 2016 |
| R Hand Trading Ltd | Construction | 2016 |
| R Hurdley & Sons Decorators Ltd | Construction | 2024 |
| R J & L Ltd | Administrative & support | 2025 |
| R J Woodhall Limited | Information & communication | 2016 |
| R K B Tech Limited | Information & communication | 2009 |
| R M Jordan Limited | Information & communication | 2022 |
| R P Davenport Limited | Professional & scientific | 2016 |