| PSZ Electrical Services Ltd | Construction | 2025 |
| PT Oncall Services Ltd | Administrative & support | 2025 |
| Pt.Claudiu Ltd | Transport & logistics | 2019 |
| PTA Golf Services Limited | Arts & recreation | 2023 |
| PTC Electrical Solutions Ltd | Construction | 2020 |
| PTM Plumbing & Electrical Ltd | Construction | 2018 |
| PTP UK Security Ltd | Administrative & support | 2024 |
| Publix Cleaning Ltd | Administrative & support | 2023 |
| PUD Limited | Information & communication | 2016 |
| Pudpost Limited | Information & communication | 2016 |
| PUG Property Limited | Real estate | 2019 |
| Pulse Digital Services Ltd | Professional & scientific | 2020 |
| Pulse Locum Limited | Health & social care | 2021 |
| Pulse of Luton C.I.C. | Information & communication | 2014 |
| Pulsepoint Healthcare Ltd | Administrative & support | 2024 |
| Pult Ltd | Manufacturing | 2024 |
| Pumpkin Lane Day Nursery Limited | Health & social care | 2024 |
| Pumps & More Limited | Manufacturing | 2008 |
| Punchardon Holdings Limited | Financial services | 2021 |
| Punchardon Inns Limited | Hospitality | 2021 |
| Punchy Pixels Ltd | Professional & scientific | 2023 |
| Punjab Fashions Ltd | Wholesale & retail | 2016 |
| Pupi Toys Ltd | Manufacturing | 2026 |
| Pura Labs Ltd | Information & communication | 2026 |
| Purdy Communications Limited | Information & communication | 2013 |
| Pure Cleaning and Maintenance Ltd | Administrative & support | 2024 |
| Pure Display Limited | Manufacturing | 2006 |
| Pure Drive Autos Ltd | Wholesale & retail | 2022 |
| Pure Line Cleaning Services Ltd | Administrative & support | 2025 |
| Pure Object Ltd | Arts & recreation | 2025 |
| Pure Therapy Group Limited | Health & social care | 2015 |
| Pure Vibes Community Ltd | Wholesale & retail | 2024 |
| Purehealth Imports Ltd | Extraterritorial | 2024 |
| Pureluv Promotions Ltd | Hospitality | 2022 |
| Purely Prime Nests Limited | Real estate | 2025 |
| Purple FOX Technologies Limited | Information & communication | 2023 |
| Purple Leaf Enterprise Ltd | Wholesale & retail | 2013 |
| Purple Monkey Associates Ltd | Professional & scientific | 2025 |
| Purplescope Limited | Professional & scientific | 2025 |
| Purpose Centre Initiative CIC | Education | 2025 |
| Purpose Driven Trust Limited | Education | 2008 |
| PURPOSE45 Transformation CIC | Education | 2025 |
| Purrstainable Petcare Ltd | Wholesale & retail | 2026 |
| Purus Sensa Ltd | Manufacturing | 2022 |
| Purushottam and Sons Ltd | Manufacturing | 2026 |
| Push Projects Ltd | Other services | 2025 |
| Putare Solutions Limited | Professional & scientific | 2019 |
| Puzzle Construction Services Ltd | Construction | 2021 |
| PVM Gworks Limited | Construction | 2017 |
| PVP Construction Ltd | Construction | 2018 |
| PW Spectrum Ltd | Water & waste | 2017 |
| PWK Transport Limited | Wholesale & retail | 2020 |
| PWR Support Ltd | Other services | 2015 |
| Pyare LAL & Sons Ltd | Wholesale & retail | 1998 |
| Pyrik International Ltd | Wholesale & retail | 2025 |
| Pyrologic Ltd | Construction | 2021 |
| Pyxis Solutions Limited | Wholesale & retail | 2020 |
| PZ0 Ltd | Manufacturing | 2024 |
| Q Academy Ltd | Education | 2024 |
| Q Chishti Properties Limited | Financial services | 2022 |
| Q Courier Services Limited | Transport & logistics | 2024 |
| Q E Properties Ltd | Households | 2023 |
| Q the Shot Ltd | Professional & scientific | 2020 |
| Q Travel & Transport Solution Limited | Transport & logistics | 2018 |
| Q&N N Limited | Construction | 2026 |
| Q&R Facilities Management Limited | Financial services | 2020 |
| Q'S Hot Food Ltd | Hospitality | 2025 |
| Q.A. Electronics Limited | | 1983 |
| Q.I.B Estates Ltd | Real estate | 2022 |
| Q.K I.T Solutions Ltd | Information & communication | 2018 |
| QA Property Investment Limited | Real estate | 2025 |
| Qadaf Holdings Ltd | Real estate | 2025 |
| Qadaf Invest Ltd | Real estate | 2026 |
| Qadeer Qureshi Ltd | Administrative & support | 2025 |
| Qadri Investments Limited | Real estate | 2025 |
| Qafila Tours Ltd | Administrative & support | 2024 |
| Qahwah London Ltd | Wholesale & retail | 2024 |
| Qaidi 804 Construction Ltd | Construction | 2024 |
| Qaime Ltd | Transport & logistics | 2016 |
| Qaiser Group Ltd | Hospitality | 2026 |
| Qamar Pharma Limited | Health & social care | 2022 |
| Qarni Enterprises Ltd | Wholesale & retail | 2024 |
| QAS Auto Shop Ltd | Wholesale & retail | 2019 |
| Qashai Ltd | Manufacturing | 2021 |
| Qasim Goods Limited | Wholesale & retail | 2025 |
| Qasim Properties Limited | Real estate | 2008 |
| Qaylah Care Services Limited | Health & social care | 2025 |
| Qayum Ltd | Real estate | 2022 |
| QBS Investments Ltd | Financial services | 2014 |
| QC Redditch Ltd | Wholesale & retail | 2021 |
| Qcorner Ltd | Hospitality | 2024 |
| QDS Derm Ltd | Health & social care | 2026 |
| QGS Electrical Ltd | Construction | 2018 |
| QH Technical Services Ltd | Manufacturing | 2026 |
| QI QI KE JI Co Ltd | Wholesale & retail | 2021 |
| Qibla Ltd | Education | 2024 |
| QIN QIN Ltd | Wholesale & retail | 2025 |
| Qismah Entertainment Ltd | Information & communication | 2016 |
| Qist Limited | Administrative & support | 2026 |
| QK Accounts Ltd | Professional & scientific | 2023 |