| Pakex Solutions Ltd | Manufacturing | 2021 |
| Palacath Limited | Construction | 1972 |
| Palazzo Property Limited | Administrative & support | 2014 |
| Palletstretchwrap.Co.Uk Ltd | Other services | 2019 |
| Palm Beauty Ltd | Wholesale & retail | 2020 |
| Palmer-Scott Limited | Manufacturing | 2018 |
| Palms Hill Limited | Administrative & support | 2014 |
| Panboo Ltd | Manufacturing | 2020 |
| Pandan LDN Limited | Administrative & support | 2021 |
| Pandora Designs Limited | Information & communication | 2016 |
| Pandora's Place Limited | Administrative & support | 2016 |
| Panelmark Limited | Real estate | 1993 |
| Papalegua Motorcycle Ltd | Wholesale & retail | 2024 |
| Papapalms Ltd | Arts & recreation | 2021 |
| Parabar Property Investments Limited | Real estate | 2017 |
| Pareto Developments Limited | Real estate | 2023 |
| Park Estates (London) Limited | Real estate | 1997 |
| Park Gate (Ealing) Limited | Households | 1964 |
| Park House Care (UK) Ltd | Health & social care | 2006 |
| Park House Property Limited | Real estate | 2024 |
| Parkdale Investments Limited | Real estate | 1961 |
| Parker James Builds Ltd | Other services | 2011 |
| Parker Pest Control Ltd | Administrative & support | 2025 |
| Parkgate Corner (Little Clacton) Management Company Limited | Households | 2024 |
| Parkgate Investments Limited | Real estate | 2014 |
| Parkmore (Woodford Green) Management Company Limited | Real estate | 1977 |
| Parkside View Holding Limited | Administrative & support | 2019 |
| Parkside View Motors Ltd | Wholesale & retail | 2025 |
| Parkside View Properties Ltd | Administrative & support | 2019 |
| Parkvibe Westcliff Limited | Wholesale & retail | 2020 |
| Parkwalk Estates Ltd | Real estate | 2000 |
| Parmigiani Consulting Ltd | Professional & scientific | 2007 |
| Parsons Bespoke Joinery Ltd | Manufacturing | 2026 |
| Pasha Consulting Limited | Administrative & support | 2014 |
| Passion Care Limited | Health & social care | 2022 |
| Passive Fire Installations Ltd | Administrative & support | 2025 |
| Pathfinder's Agency Ltd | Administrative & support | 2025 |
| Pathway Management Limited | Administrative & support | 2004 |
| Pathyu Ltd | Health & social care | 2018 |
| Patricia Coward Limited | Other services | 2020 |
| Patsha Limited | Real estate | 1974 |
| Pattern Doctor Ltd | Information & communication | 2014 |
| Patternway Software Solutions Limited | Information & communication | 2013 |
| Pattnaik-Bodra Anaesthetics Limited | Health & social care | 2020 |
| PAU Drinks Limited | Wholesale & retail | 2018 |
| Paul Davis Investments Limited | Real estate | 2018 |
| Paul Sennett Portfolio Consultants Ltd | Professional & scientific | 2024 |
| Paulena Panayiotou Legal Services Limited | Professional & scientific | 2014 |
| Pavilion Court Freehold Limited | Households | 2016 |
| PAW Studios Ltd | Real estate | 2026 |
| PAY the Wizard Ltd | Information & communication | 2024 |
| Pazezo Ltd | Health & social care | 2025 |
| Pazraz Limited | Real estate | 2013 |
| PC Properties Investments Ltd | Real estate | 2024 |
| Pcis (Southern) Limited | Wholesale & retail | 2014 |
| Pcmm Holdings Limited | Real estate | 2016 |
| PDM Property Investments Ltd | Real estate | 2023 |
| Peace Locums Limited | Health & social care | 2022 |
| Peach Extract Ltd | Arts & recreation | 2024 |
| Peak Films London Ltd | Professional & scientific | 2020 |
| Peakstar Limited | Administrative & support | 2012 |
| Pear Tree Court (Barkingside) Management Limited | Households | 1982 |
| Pearl Property Investments Limited | Real estate | 2007 |
| Pearlyvidhi Consultancy Limited | Health & social care | 2007 |
| Pearlyvidhi Investment Ltd | Real estate | 2019 |
| Pearson Mckinsey Limited | Professional & scientific | 1999 |
| Pedal Couriers Ltd | Transport & logistics | 2026 |
| Peel Business Ventures Ltd | Professional & scientific | 2024 |
| PEK Build Ltd | Construction | 2021 |
| Pelican Property Syndicate Limited | Real estate | 2000 |
| Peloan Limited | Wholesale & retail | 2014 |
| Pengil Limited | Administrative & support | 2014 |
| Penguin Designs Limited | Manufacturing | 1970 |
| Peniel Services Limited | Administrative & support | 2006 |
| Pennington Green Limited | Professional & scientific | 2009 |
| Penny Patel Ltd | Wholesale & retail | 2023 |
| Penpsy Psychological Services Ltd | Health & social care | 2021 |
| Perception Events Ltd | Administrative & support | 2007 |
| Perception Integration Ltd | Information & communication | 2020 |
| Percy Metal Company Limited | Manufacturing | 1933 |
| Perera Food Limited | Manufacturing | 2023 |
| Perfect Cabling Ltd | Construction | 2011 |
| Perfect Links Holdings Limited | Real estate | 2018 |
| Perfect People Agency Limited | Administrative & support | 2018 |
| Perfect Propty UK Limited | Real estate | 2025 |
| Perfectly Clean Ltd | Administrative & support | 2019 |
| Perform With Clarity Ltd | Professional & scientific | 2024 |
| Peri Cards Limited | Wholesale & retail | 2014 |
| Perry ST. Limited | Construction | 2025 |
| Perseverance Homes Limited | Real estate | 2026 |
| Personal Bakes Limited | Wholesale & retail | 2023 |
| Personal Driving School Limited | Education | 2025 |
| Perspectiv Stories Limited | Administrative & support | 2026 |
| Peter Bhusri Limited | Manufacturing | 2021 |
| Peter Mullins Consultancy Limited | Information & communication | 1993 |
| Peter Roffey Estate Agents Limited | Real estate | 1997 |
| Petoil Projects Consultants Limited | Professional & scientific | 2012 |
| Petrea Cleaning Services Ltd | Administrative & support | 2025 |
| Petrunova Build Ltd | Construction | 2026 |
| PEX Design Limited | Information & communication | 2021 |