| Proxima Nova Ltd | Information & communication | 2021 |
| Proximity Property Group Ltd | Real estate | 2024 |
| Proximity Solutions (UK) Limited | Other services | 2007 |
| PRP (Midlands) Ltd | Real estate | 2021 |
| PRS Retail Ltd | Wholesale & retail | 2024 |
| Prshots Services Ltd | Information & communication | 2014 |
| Prtv Limited | Extraterritorial | 2012 |
| Prudent Supported Living Ltd | Health & social care | 2022 |
| Prymal Ltd | Information & communication | 2026 |
| Prymamk Ltd | Transport & logistics | 2022 |
| Prynted Ltd | Manufacturing | 2018 |
| PS Autoart Limited | Wholesale & retail | 2016 |
| PS Business Limited | Professional & scientific | 2009 |
| PS Comfort Property Ltd | Real estate | 2023 |
| PS Energy UK Limited | Extraterritorial | 2015 |
| PS Structural Ltd | Professional & scientific | 2024 |
| PS Truck Ltd | Transport & logistics | 2025 |
| PS7 Trading Ltd | Wholesale & retail | 2025 |
| PSA Property Ltd | Real estate | 2018 |
| PSA Sandhu Limited | Financial services | 2023 |
| PSA Stores Ltd | Wholesale & retail | 2024 |
| PSB Industries Limited | Hospitality | 2022 |
| PSB Property Ltd | Real estate | 2025 |
| Psbsons Ltd | Health & social care | 2013 |
| PSC Vodec Limited | Manufacturing | 2009 |
| PSD TCG Limited | Administrative & support | 2025 |
| Psds Holdings Limited | Real estate | 2024 |
| Psjs Homes Limited | Real estate | 2025 |
| PSL Bidco Limited | Financial services | 2019 |
| PSL Topco Limited | Financial services | 2019 |
| PSM Homes Limited | Construction | 2017 |
| PSM Real Estates Limited | Real estate | 2011 |
| PSN Property Ltd | Real estate | 2025 |
| PSP Properties SPV Ltd | Real estate | 2026 |
| PSR Courier Ltd | Transport & logistics | 2022 |
| PSR Trading Limited | Wholesale & retail | 2017 |
| Psrr Limited | Other services | 2022 |
| PSS Real Estates Limited | Real estate | 2011 |
| Psxsolutions Ltd | Health & social care | 2024 |
| Psych DOC Limited | Health & social care | 2014 |
| Psychedelic DIP Ltd | Arts & recreation | 2017 |
| Psycheforce Limited | Professional & scientific | 2015 |
| Psychological Supervision & Consultancy Ltd | Professional & scientific | 2021 |
| Psychology for Life Limited | Health & social care | 2017 |
| Psyocean Ltd | Education | 2024 |
| PT Consultancy Ltd | Hospitality | 2010 |
| PTD Networking Limited | Information & communication | 2006 |
| Ptrh Ltd | Financial services | 2024 |
| PTW Pro Ltd | Administrative & support | 2016 |
| PUB Busters Ltd | Hospitality | 2025 |
| PUB Employees Co. Limited | Real estate | 2025 |
| Publix Food and Wine Ltd | Wholesale & retail | 2023 |
| Pubnova Limited | Financial services | 2024 |
| Pubschool Inns CIC | Education | 2017 |
| Puck City Limited | Wholesale & retail | 2026 |
| Puddles Doggy Day Care Ltd | Other services | 2023 |
| Puffin Cube Limited | Information & communication | 2023 |
| Puffjammy Limited | Other services | 2025 |
| Puffnstuff Ltd | Wholesale & retail | 2026 |
| Pufina Trans Ltd | Transport & logistics | 2022 |
| Pugh Property Management Group Ltd | Households | 2020 |
| Pugh's Investments Ltd | Financial services | 2023 |
| Pukeko Properties Ltd | Real estate | 2024 |
| Pukka Pens Limited | Administrative & support | 2007 |
| Pulo Compliance Ltd | Professional & scientific | 2023 |
| Pulse (Birmingham) Ltd | Administrative & support | 2019 |
| Pulse (London) Ltd | Administrative & support | 2019 |
| Pulse (Midlands) Limited | Education | 2007 |
| Pulse AED Limited | Professional & scientific | 2017 |
| Pulse Associates Limited | Administrative & support | 2009 |
| Pulse Cardiac Diagnostic Ltd | Health & social care | 2022 |
| Pulse Consult Developments Ltd | Real estate | 2020 |
| Pulse Consult Ltd | Financial services | 2018 |
| Pulse Health Systems Ltd | Administrative & support | 2016 |
| Pulse Health, Safety & Compliance Limited | Administrative & support | 2022 |
| Pulse Lifts Ltd | Professional & scientific | 2009 |
| Pulse Pest Control Limited | Administrative & support | 2017 |
| Pulse Safety Limited | Professional & scientific | 2012 |
| Pulse Social Solutions Ltd | Health & social care | 2026 |
| Puma Bidco Limited | Extraterritorial | 2020 |
| Puma Topco Limited | Extraterritorial | 2020 |
| Pump N Pound Ltd | Construction | 2020 |
| Pump Serve Ltd | Construction | 2025 |
| Punch Capital Limited | Administrative & support | 2012 |
| Punch Coffee Limited | Hospitality | 2022 |
| Punchbowl Property Partners Ltd | Real estate | 2026 |
| Punjab Food Notts Ltd | Hospitality | 2021 |
| PUR Healthcare Services Limited | Health & social care | 2019 |
| Pura Packaging Limited | Manufacturing | 2013 |
| Purank Limited | Health & social care | 2011 |
| Puravi Limited | Real estate | 2020 |
| Purdey Hair Limited | Other services | 2015 |
| Pure & Simple Ltd | Information & communication | 2012 |
| Pure Accountancy Services Ltd | Professional & scientific | 2016 |
| Pure Aesthetics Limited | Other services | 2003 |
| Pure Audio Hire Ltd | Administrative & support | 2008 |
| Pure Brickwork Limited | Construction | 2017 |
| Pure Class Motion Ltd. | Professional & scientific | 2017 |
| Pure Cleaning Notts Ltd | Administrative & support | 2025 |
| Pure Cleaning Solutions Limited | Administrative & support | 2023 |