| P M Fixing Ltd | Construction | 2016 |
| P R Beeson Plastering Limited | Construction | 2014 |
| P Robelou Consulting Limited | Information & communication | 2018 |
| P&A Drywall Limited | Construction | 2024 |
| P&C Leisure Limited | Arts & recreation | 2014 |
| P&Db Construction Limited | Construction | 2023 |
| P&M Residential Ltd | Real estate | 2026 |
| P&N Electrical Services Ltd | Construction | 2011 |
| P&S Electrical Ltd | Construction | 2022 |
| P&T Management Services Limited | Professional & scientific | 2012 |
| P&Transport Ltd | Transport & logistics | 2014 |
| P&Z Jago Ltd | Construction | 2017 |
| P. Bennett Limited | Manufacturing | 2013 |
| P. Edward Limited | Wholesale & retail | 2003 |
| P.C. Electrical (South East) Limited | Manufacturing | 2013 |
| P.I.P. Lift Service Limited | Manufacturing | 1992 |
| P.R.A.M Services Ltd | Construction | 2020 |
| P.T.P Expert Ltd | Construction | 2018 |
| P.T.S Services Blinds & Curtains Limited | Administrative & support | 2006 |
| P1 Protection Services Ltd | Hospitality | 2025 |
| PA Studies Limited | Education | 2017 |
| PA Transport Services Ltd | Manufacturing | 2018 |
| PA Urology & Medical Services Ltd | Health & social care | 2015 |
| Pabari Investment Properties Limited | Real estate | 2004 |
| PAC Logistic Ltd | Wholesale & retail | 2022 |
| Paca Investment Ltd | Real estate | 2024 |
| Pace Courier Services Limited | Administrative & support | 2013 |
| Pachoto Ltd | Wholesale & retail | 2025 |
| Pacioli Consulting Limited | Professional & scientific | 2022 |
| Pack Bubbles Ltd | Wholesale & retail | 2022 |
| Padda Construction (LDN) Ltd | Construction | 2018 |
| Padel 123 Ltd | Arts & recreation | 2022 |
| Padnall Group Limited | Financial services | 2026 |
| Paediatric Clinical Care Ltd | Extraterritorial | 2024 |
| Paediatric Community Care Ltd | Extraterritorial | 2024 |
| Paevie Fitness Limited | Education | 2021 |
| Pagato Limited | Administrative & support | 2011 |
| Pages (Euro) Ltd | Hospitality | 1996 |
| Paint N Create Limited | Wholesale & retail | 2026 |
| Paizan Ltd | Real estate | 2025 |
| Pakharvest Global Ltd | Wholesale & retail | 2025 |
| Pakistan Trading Limited | Wholesale & retail | 2019 |
| Pakistani Christians Voice Limited | Other services | 2019 |
| Pakkit Ltd | Wholesale & retail | 2025 |
| PAL Home Improvements Limited | Construction | 2023 |
| Palace Construct Ltd | Construction | 2026 |
| Palak Properties Ltd | Real estate | 2018 |
| Palak Services Ltd | Professional & scientific | 2011 |
| Palas Barbers Ltd | Other services | 2022 |
| Pall Mall Aqeel Limited | Wholesale & retail | 2025 |
| Palliun Ltd | Real estate | 2011 |
| Palm Exchange Limited | Wholesale & retail | 2025 |
| Palm Island Lounge Ltd | Hospitality | 2022 |
| Palm Sports Ltd | Arts & recreation | 2019 |
| Palm Strategy Ltd | Professional & scientific | 2025 |
| Palmer Pipework Services Limited | Other services | 2014 |
| Palmer Rigging Ltd | Construction | 2023 |
| Palmers Plumbing Services Limited | Construction | 2015 |
| Palmers Reactive Maintenance Ltd | Construction | 2024 |
| Palmers Tiling Services Ltd | Construction | 2025 |
| Palmers-Oak Limited | Professional & scientific | 2012 |
| Palms Hotel London Ltd | Hospitality | 2024 |
| Palocin Ltd | Health & social care | 2014 |
| Palyno Trading Limited | Professional & scientific | 2023 |
| PAM Construction Limited | Construction | 2011 |
| PAM Decorators Limited | Construction | 2015 |
| PAM Real Estates Ltd | Real estate | 2024 |
| Pamper ME Lush Limited | Administrative & support | 2023 |
| Pams Spares Ltd | Wholesale & retail | 2025 |
| Pamwillow Limited | Extraterritorial | 1979 |
| Panache Football Club Limited | Arts & recreation | 2025 |
| Panache Sourcing Ltd | Wholesale & retail | 2024 |
| Panda Car UK Limited | Wholesale & retail | 2016 |
| Pandaprint Limited | Manufacturing | 2025 |
| Pandemonium Performance Ltd | Extraterritorial | 2016 |
| Pandora Boutique Ltd | Wholesale & retail | 2023 |
| Panel Pro Ltd | Wholesale & retail | 2025 |
| Panesar & Associates Ltd | Professional & scientific | 2023 |
| Pangloss Management Services Ltd | Construction | 2021 |
| Panihal Recruitment Services Limited | Administrative & support | 2022 |
| Panjtan PAK Limited | Wholesale & retail | 2024 |
| Pannu Builders Ltd | Construction | 2022 |
| Panoramic Sourcing Ltd | Information & communication | 2019 |
| Pansah Homes Limited | Real estate | 2023 |
| Papa Telecom Ltd | Information & communication | 2018 |
| Paperless Technology Limited | Information & communication | 2024 |
| Pappas Diagnostic Ltd | Health & social care | 2018 |
| Papro Limited | Construction | 2018 |
| Papushi Properties Ltd | Real estate | 2026 |
| Paradigm Effect Limited | Arts & recreation | 2011 |
| Paradise Health Limited | Wholesale & retail | 2016 |
| Paradise Romford Ltd | Hospitality | 2023 |
| Paragon Developments & Interiors Ltd | Construction | 2025 |
| Paragon Maintenance Services Ltd | Households | 2023 |
| Paragon Ruxley Properties Limited | Real estate | 2011 |
| Paraiso Capital Ltd | Real estate | 2016 |
| Paraiso Capital Real Estate Ltd | Real estate | 2019 |
| Paraiso Property Ltd | Real estate | 2020 |
| Parallel Computing Ltd | Information & communication | 2014 |
| Paramount 360 Tech Limited | Information & communication | 2025 |