| Project Trinity Bidco Limited | Professional & scientific | 2021 |
| Project Trinity Midco Limited | Professional & scientific | 2021 |
| Project Trinity Topco Limited | Professional & scientific | 2021 |
| Projetex Group LLP | | 2018 |
| Projica Limited | Professional & scientific | 2024 |
| Promaris Ltd | Professional & scientific | 2025 |
| Promera UK Holdings Limited | Information & communication | 2026 |
| Promptbros Limited | Information & communication | 2023 |
| Promus Properties Ltd | Real estate | 2024 |
| Proneat Holdings Ltd | Construction | 2017 |
| Proof of Concept Engineering Limited | Professional & scientific | 2023 |
| Proost Ltd | Hospitality | 2019 |
| Propco (Industrial) Ltd | Real estate | 2020 |
| Propco (Pacific) Ltd | Real estate | 2018 |
| Propco (Shropshire) Ltd | Real estate | 2023 |
| Proper Tea Investments Limited | Wholesale & retail | 2013 |
| Properties Acquisitions Limited | Professional & scientific | 2025 |
| Properties Paid Ltd | Real estate | 2024 |
| Property 12 Ltd | Real estate | 2024 |
| Property and Land Investment Ltd | Real estate | 2016 |
| Property Box Cheshire Ltd | Hospitality | 2026 |
| Property E Ltd | Real estate | 2022 |
| Property Funding 2 Limited | Financial services | 2020 |
| Property Funding Limited | Financial services | 2013 |
| Property Konnect Bureau Ltd | Real estate | 2024 |
| Property Legal (Manchester) Limited | Professional & scientific | 2010 |
| Property Phoenix Ltd | Real estate | 2024 |
| Property Portfolio (UK) Limited | Real estate | 2013 |
| Property Sales Algarve Ltd | Real estate | 2014 |
| Property Supply Limited | Real estate | 2020 |
| Property Ventures (C&D) Ltd | Real estate | 2020 |
| Proprietas Consulting Limited | Professional & scientific | 2024 |
| Prospect Digital Limited | Information & communication | 2026 |
| Prospect Medical (Malvern) Limited | Real estate | 2006 |
| Prospective Properties | Real estate | 2000 |
| Prosperity Plus Healthcare Limited | Administrative & support | 2022 |
| Prospinal Health Ltd | Health & social care | 2024 |
| Protean Training Solutions Limited | Information & communication | 2026 |
| Protex AI UK Limited | Wholesale & retail | 2024 |
| Protopia Ltd | Professional & scientific | 2022 |
| Prototypal Ltd | Information & communication | 2016 |
| Provadis Enterprise Ltd | Professional & scientific | 2010 |
| Provalere Group Ltd | Financial services | 2026 |
| Providence 1 Ltd | Real estate | 2023 |
| Providential Investments Ltd | Real estate | 2010 |
| Provincial House (Sale) Management Company Limited | Households | 2018 |
| Provincial Land Limited | Construction | 1960 |
| Provincial Property & Investment Co. (Contractors) Limited | Real estate | 1986 |
| Provincial Property and Investment Company Limited | Real estate | 1899 |
| Provision Trading Ltd | Wholesale & retail | 2025 |
| Proximie Limited | Administrative & support | 2016 |
| Prstige Perfumes BV Ltd | Wholesale & retail | 2025 |
| PS Interiors Holdings Limited | Professional & scientific | 2024 |
| PS Interiors International Limited | Wholesale & retail | 2021 |
| PS MCR Properties Ltd | Real estate | 2022 |
| PS Patel Holdings Ltd | Financial services | 2022 |
| PS Patel Property Ltd | Real estate | 2022 |
| PS Property Manchester Ltd | Households | 2023 |
| PS Transformation Consulting Limited | Professional & scientific | 2026 |
| PSG Law (EOT) Limited | Financial services | 2024 |
| PSG Law Limited | Professional & scientific | 2012 |
| PSG Trust Corporation Limited | Professional & scientific | 2017 |
| Psiomega Ltd | Professional & scientific | 2023 |
| PT Hale Limited | Arts & recreation | 2023 |
| Ptcw Services Limited | Information & communication | 2022 |
| Ptfe Applied Coatings Ltd | Manufacturing | 2017 |
| PTJ Consultancy Limited | Health & social care | 2021 |
| Ptlex Limited | Real estate | 2022 |
| Ptmotion Ltd | Information & communication | 2023 |
| PUB Promotion Ltd | Other services | 2012 |
| Public Function Ltd | Information & communication | 2023 |
| Pugh Davies & Company Limited | Professional & scientific | 1903 |
| Pugh Davies (Northern Quarter) Limited | Real estate | 1995 |
| Pugh Davies Properties Limited | Real estate | 1972 |
| Pulmowise Consulting Ltd | Health & social care | 2025 |
| Pulse Auction Group Limited | Wholesale & retail | 2024 |
| Pulse Auction Limited | Wholesale & retail | 2024 |
| Pulteney Bridge Capital UK Limited | Financial services | 2022 |
| Pumpkin Properties Ltd | Real estate | 2021 |
| Punk Spirit Films LLP | | 2025 |
| Pure Fades Ltd | Other services | 2018 |
| Pure Outsource Ltd | Administrative & support | 2020 |
| Pure Padel Clubs Darlington Limited | Arts & recreation | 2024 |
| Pure People Performance Ltd | Professional & scientific | 2007 |
| Pure Residential Developments Limited | Construction | 2001 |
| Pure Space Design Limited | Professional & scientific | 2023 |
| Puredge Limited | Wholesale & retail | 2026 |
| Purely Tresses Limited | Wholesale & retail | 2024 |
| Puren Strategic Limited | Professional & scientific | 2024 |
| Purepower Nutrition UK Limited | Hospitality | 2020 |
| Purite Holdings Limited | Financial services | 1996 |
| Purple Pumpkin Limited | Professional & scientific | 2019 |
| Purple Velo Ltd | Administrative & support | 2025 |
| Purr-O-Lux Limited | Manufacturing | 1982 |
| PV SAI Services Ltd | Information & communication | 2017 |
| PW Construction Consultancy Limited | Construction | 2017 |
| PW Storage Limited | Transport & logistics | 2026 |
| PW Utilities Limited | Construction | 2007 |
| PWS Installations Ltd | Manufacturing | 2007 |
| Pybus Solutions Limited | Professional & scientific | 2026 |