| Protek Motors Ltd | Wholesale & retail | 2025 |
| Protek Packaging Holdings Limited | Financial services | 2025 |
| Protek Packaging Limited | Manufacturing | 2004 |
| Proton Payments Limited | Information & communication | 2013 |
| Proton Services Ltd | Professional & scientific | 2015 |
| Prototipo Limited | Professional & scientific | 2018 |
| Proval Limited | Administrative & support | 2015 |
| Providence Travel Ltd | Transport & logistics | 2023 |
| Provision Resource Limited | Administrative & support | 2021 |
| Proviso Systems Limited | Professional & scientific | 1995 |
| Provita Distribution Ltd | Health & social care | 2021 |
| Proxi Education Ltd | Administrative & support | 2023 |
| Prqs Limited | Administrative & support | 2014 |
| PRS Consulting Limited | Professional & scientific | 2021 |
| PRS IT Contracting Limited | Information & communication | 2019 |
| PRS Sporting Ltd | Wholesale & retail | 2023 |
| PRT Services Ltd | Other services | 2019 |
| Pruna Trans Ltd | Transport & logistics | 2018 |
| Prutdave Investments Limited | Real estate | 1960 |
| PS Catering Ltd | Hospitality | 2023 |
| PS LAB Solutions Ltd | Administrative & support | 2026 |
| PS NDT Rope Access Ltd | Manufacturing | 2022 |
| PSC (1145) Limited | Professional & scientific | 2007 |
| PSC Business Support Ltd | Professional & scientific | 2014 |
| PSC Civil Engineering Ltd | Professional & scientific | 2023 |
| PSC Lean Solutions Ltd | Professional & scientific | 2019 |
| PSC Process Engineering Limited | Administrative & support | 2007 |
| Pscm Solutions Limited | Administrative & support | 2026 |
| PSG Training Ltd | Education | 2022 |
| Psi-K | Professional & scientific | 2007 |
| Psicom Heavy Industries Ltd | Information & communication | 2019 |
| PSK Consulting Ltd | Administrative & support | 2023 |
| PSK Pharma Solutions Limited | Professional & scientific | 2022 |
| PSM Vision Services Ltd | Administrative & support | 2007 |
| Psopko Ltd | Professional & scientific | 2025 |
| PSV Products Limited | Information & communication | 2003 |
| PSW Consultancy Limited | Administrative & support | 2023 |
| PSW Trade Suppliers Limited | Wholesale & retail | 2011 |
| PT Decorating Ltd | Professional & scientific | 2016 |
| PT Development Services Limited | Real estate | 2017 |
| PT100 Limited | Information & communication | 2007 |
| PTS Property (Cairo Street) LLP | | 2005 |
| PTS Property (Prestwich) Ltd | Professional & scientific | 2004 |
| PTS Property (Warrington) Limited | Real estate | 2014 |
| PTS Property Limited | Professional & scientific | 2001 |
| Pubhoney Ltd | Hospitality | 2025 |
| Publicity Print Marketing Limited | Wholesale & retail | 1986 |
| Pubnub UK Limited | Information & communication | 2019 |
| Pubwright Ltd | Arts & recreation | 2023 |
| PUG Engineering Ltd | Professional & scientific | 2018 |
| Puleston Wealth Management Ltd | Financial services | 2013 |
| Pull Spot Ltd | Wholesale & retail | 2025 |
| Pulley Rothwell Brooks Philbin Limited | Financial services | 2024 |
| Pulse DJ Limited | Administrative & support | 2024 |
| Pulse Properties Limited | Real estate | 2006 |
| Pulse Systems Ltd | Information & communication | 2014 |
| Pump Service and Solutions Ltd | Manufacturing | 2021 |
| Pump Solutions Ltd | Professional & scientific | 2023 |
| Pupclub Couture Ltd | Wholesale & retail | 2023 |
| Pure Build Solutions Ltd | Construction | 2024 |
| Pure Citrine Limited | Professional & scientific | 2018 |
| Pure Deva Ltd | Wholesale & retail | 2009 |
| Pure Financial Consulting Limited | Financial services | 2006 |
| Pure Focus Solutions Ltd | Information & communication | 2015 |
| Pure GAS and Power Ltd | Energy | 2025 |
| Pure Pixel Creations Ltd | Wholesale & retail | 2024 |
| Pure PLB Ltd | Wholesale & retail | 2019 |
| Pure Quality Limited | Professional & scientific | 2022 |
| Pure Shoes Limited | Wholesale & retail | 2020 |
| Pureflow Engineering & Management Limited | Professional & scientific | 2024 |
| Pureity Limited | Information & communication | 2003 |
| Purely Energy Ltd | Administrative & support | 2021 |
| Purerenew Health Ltd | Health & social care | 2026 |
| Purespace Secure Ltd | Administrative & support | 2026 |
| Purity Bioscience Ltd | Professional & scientific | 2025 |
| Purley Development Co.Limited | Professional & scientific | 1960 |
| Purley Park Investments Limited | Real estate | 2026 |
| Purple Accounts Ltd | Professional & scientific | 2011 |
| Purple Cabbage Ltd | Information & communication | 2016 |
| Purple Gecko Health Ltd | Arts & recreation | 2024 |
| Purple Gecko Youth Ltd | Arts & recreation | 2023 |
| Purple Kind CIC | Education | 2025 |
| Purple Tails Ltd | Professional & scientific | 2026 |
| Putt Above Leisure Ltd | Arts & recreation | 2023 |
| PVB Trans Ltd | Transport & logistics | 2020 |
| Pvfg Limited | Other services | 2019 |
| PVH Data Services Limited | Administrative & support | 2011 |
| PW Engineering Services Ltd | Administrative & support | 2025 |
| PW Integrity & Engineering Services Ltd | Professional & scientific | 2018 |
| PW Piping Solutions Ltd | Professional & scientific | 2024 |
| Pwaldie Consultancy Ltd | Professional & scientific | 2020 |
| Pwpt Limited | Arts & recreation | 2015 |
| PWR Power Projects Limited | Construction | 1988 |
| PWW Management Limited | Professional & scientific | 2017 |
| Pwwcoms Ltd | Administrative & support | 2007 |
| PY Technology (UK) Ltd. | Wholesale & retail | 2014 |
| Pyboahh Limited | Administrative & support | 2024 |
| PYE CAD Design Limited | Administrative & support | 2012 |
| Pyramid Leasing Ltd | Administrative & support | 2017 |
| Pyramid Yoga and Dance Academy Limited | Education | 2022 |