| Planty Mcplantface Limited | Financial services | 2021 |
| Platinum Fire Solutions Ltd | Construction | 2014 |
| Platinum Heating & Plumbing Ltd | Construction | 2017 |
| Platinum Truck Trading Limited | Wholesale & retail | 2025 |
| Plena Limited | Administrative & support | 2021 |
| Plessey Holdings Limited | Professional & scientific | 1958 |
| Pleurati Limited | Wholesale & retail | 2004 |
| Plona Ltd | Information & communication | 2026 |
| Plop Projects Limited | Administrative & support | 2003 |
| Plumbing and Heating Central Ltd | Construction | 2020 |
| Plumer Independent Consulting Ltd | Professional & scientific | 2016 |
| Pmcleaning Ltd | Administrative & support | 2024 |
| PMO Financial Services Limited | Information & communication | 2011 |
| Pmss Limited | Construction | 2015 |
| POD Landscapes Grounds Maintenance Limited | Administrative & support | 2018 |
| Point to Point Couriers (Holding) Limited | Professional & scientific | 1988 |
| Point to Point Couriers Limited | Transport & logistics | 1980 |
| Polaris Consultants Ltd | Professional & scientific | 2021 |
| Pongal Express Ltd | Hospitality | 2021 |
| Pool 22 Ltd | Arts & recreation | 2021 |
| Pool Supplies Ltd | Wholesale & retail | 2009 |
| Portman 3 Reversion Limited | Households | 2007 |
| Poseidon Consultancy Ltd | Professional & scientific | 2022 |
| Position Lens Limited | Information & communication | 2026 |
| Positiv Cohort Ltd | Administrative & support | 2023 |
| Possible Physiotherapy Ltd | Other services | 2022 |
| Potting Shed Bar and Gardens Limited | Hospitality | 2019 |
| Powabyke UK Limited | Wholesale & retail | 2013 |
| Powell Asset Management Limited | Professional & scientific | 2020 |
| Powell Consulting Limited | Extraterritorial | 2023 |
| Powell Corporation Limited | Extraterritorial | 2023 |
| Powell Property Investment Limited | Real estate | 2020 |
| Powell Trading Limited | Extraterritorial | 2023 |
| POWER4EVENTS Ltd | Construction | 2026 |
| PP Recruitment Limited | Administrative & support | 2012 |
| PPG Criminal Law Ltd | Professional & scientific | 2005 |
| PPS Computing Ltd | Information & communication | 2012 |
| Practice Management Services Limited | Professional & scientific | 2016 |
| Prashantinelim Ltd | Real estate | 2025 |
| Prayusha and Prabriti Company Limited | Health & social care | 2015 |
| Prekortex Therapeutics Limited | Manufacturing | 2026 |
| Premier Aviation (UK) Limited | Transport & logistics | 1994 |
| Premier Commercial and Residential Limited | Real estate | 2011 |
| Premier Elder Care Limited | Health & social care | 2023 |
| Premis Surveyors Limited | Professional & scientific | 2025 |
| Prenata Healthcare Limited | Health & social care | 2016 |
| Prep & Apply Limited | Construction | 2025 |
| Prestige Flooring Services Limited | Construction | 2015 |
| Prestige Pro Plumbing and Heating Limited | Construction | 2025 |
| Prestige Slabs Limited | Wholesale & retail | 2025 |
| Preston Lodge Residents Association Limited | Households | 2007 |
| Pret a Vintage Limited | Wholesale & retail | 2013 |
| Pride and Joy Restored Limited | Wholesale & retail | 2021 |
| Prime Fit Builders Ltd | Construction | 2025 |
| Prime Platinum Cleaning Limited | Administrative & support | 2026 |
| Prime Systems Ltd | Wholesale & retail | 2025 |
| Primed Performance Ltd | Hospitality | 2026 |
| Primitive Performance Limited | Administrative & support | 2017 |
| Prince Malik Atta Tent Pegging UK Limited | Arts & recreation | 2025 |
| Princestones Limited | Manufacturing | 2023 |
| Printing Data Limited | Manufacturing | 2002 |
| Pristine Car Valeting Ltd | Administrative & support | 2025 |
| Pristine Valeting Center Ltd | Wholesale & retail | 2024 |
| Pritchards Fine Builds and Interiors Ltd | Construction | 2019 |
| Pro Experts Group Ltd | Construction | 2025 |
| Pro-Chain Ltd | Professional & scientific | 2023 |
| Pro-Cise Ltd | Construction | 2024 |
| Pro-Visual Security Ltd | Manufacturing | 2015 |
| Production III Limited | Professional & scientific | 2025 |
| Professional Audio Visual Staging Limited | Arts & recreation | 2012 |
| Progressive Advancements Ltd | Wholesale & retail | 2026 |
| Progressus Intelligence Consulting Ltd | Information & communication | 2024 |
| Project Desk Ltd | Administrative & support | 2023 |
| Project Management Services (Southern) Limited | Construction | 2004 |
| Project Ventures Rail Investments I Limited | Financial services | 2012 |
| Prompt 24/7 Mobile Tyre Service Ltd | Wholesale & retail | 2018 |
| Propello Properties Limited | Real estate | 2015 |
| Property Solution (South East) Limited | Real estate | 2003 |
| Property Tech Solutions Ltd | Information & communication | 2024 |
| Property Tier List Ltd | Professional & scientific | 2025 |
| Proserv International Ltd | Wholesale & retail | 2026 |
| Prospect Cars Limited | Wholesale & retail | 2020 |
| Prospect East Limited | Information & communication | 2011 |
| Prospect Property Investment and Development Limited | Real estate | 2025 |
| Protegens Ltd | Manufacturing | 2026 |
| Proton V Ltd | Professional & scientific | 2020 |
| PS Environmental Services Limited | Construction | 2000 |
| Psytel Ltd | Information & communication | 2016 |
| Ptst Consulting Limited | Professional & scientific | 2015 |
| PTY Concepts Ltd | Households | 2020 |
| Pulse Logisitics Ltd | Transport & logistics | 2016 |
| Punterfam Ltd | Real estate | 2018 |
| Pups ‘N’ Shine Ltd | Other services | 2026 |
| Pure Impact Performance Ltd | Education | 2025 |
| Purodem Ltd | Other services | 2013 |
| Purple Bean Games Ltd | Information & communication | 2026 |
| Putty Monster Ltd | Manufacturing | 2019 |
| PW CSP Limited | Professional & scientific | 2012 |
| PWM Scaffolding Limited | Construction | 2012 |
| PYE (Electronic Products) Limited | Professional & scientific | 1929 |