| Polish Saturday School Forest Gate Ilford Enterprises Ltd | Hospitality | 2026 |
| Polished and Clean Ltd | Administrative & support | 2025 |
| Pollion Ltd | Professional & scientific | 2025 |
| Polo Traders Ltd | Wholesale & retail | 2021 |
| Polstar Group Ltd | Construction | 2019 |
| Polstra Group Ltd | Construction | 2025 |
| Polvex Soft Limited | Information & communication | 2025 |
| Polyplan Ltd | Professional & scientific | 2014 |
| Polyskill Learning Centre Limited | Education | 2013 |
| Pomol Ltd | Wholesale & retail | 2015 |
| Pomp Properties Ltd | Real estate | 2011 |
| Ponders Way Limited | Construction | 2013 |
| Pongal Ltd | Wholesale & retail | 2024 |
| Ponn Ltd | Transport & logistics | 2026 |
| Ponyytailclinic Limited | Other services | 2025 |
| Poolsan Direct (Leisure) Limited | Other services | 2007 |
| Poon Dojo CIC | Other services | 2026 |
| Poopathy Foods Ltd | Wholesale & retail | 2024 |
| Poorna Private Limited | Hospitality | 2025 |
| POP GS Construction Ltd | Construction | 2019 |
| Popat Properties Limited | Real estate | 2010 |
| Popcorn Motion Pictures Limited | Extraterritorial | 2014 |
| Popintani Construction Ltd | Construction | 2021 |
| POPOOLA529 Ltd | Administrative & support | 2014 |
| Popov Services Limited | Construction | 2023 |
| Poppet & Co Ltd | Arts & recreation | 2025 |
| Poppiee.S Limited | Arts & recreation | 2026 |
| Poppy & Care Ltd | Health & social care | 2022 |
| Poppy Field Developments Ltd | Real estate | 2021 |
| Poppy Lodge Care Residential Homes Limited | Health & social care | 2013 |
| Popsoda Holdings Limited | Financial services | 2017 |
| Popsoda Limited | Wholesale & retail | 2003 |
| Popsoda Properties Limited | Real estate | 2018 |
| Poptato Ltd | Other services | 2014 |
| Popular Security & Facility Management Ltd | Administrative & support | 2025 |
| Populus Genus Ltd | Education | 2023 |
| Porcellan Ceramica Limited | Construction | 2015 |
| Porta Argenti Ltd | Wholesale & retail | 2023 |
| Porte a Porte Payroll Ltd | Wholesale & retail | 2018 |
| Portfolio Assets Ltd | Real estate | 2017 |
| Portland Associates (UK) Limited | Wholesale & retail | 2003 |
| Portland Developments (London) Ltd | Construction | 2015 |
| Portland House Chadwell Ltd | Real estate | 2020 |
| Portland Meadow Property Limited | Real estate | 2025 |
| Portman Consultancy Limited | Information & communication | 2011 |
| Portomens Ltd | Wholesale & retail | 2024 |
| Portsmouth Property Investments Limited | Real estate | 2026 |
| Portway EDU Hub Ltd | Education | 2025 |
| Portway London Ltd | Real estate | 2015 |
| Posandro Limited | Information & communication | 2019 |
| Posh Sofa Ltd | Wholesale & retail | 2025 |
| Positive Attitude Character Training (Pact) Community Interest Company | Education | 2023 |
| Positive Financial Services Limited | Professional & scientific | 2014 |
| Positive Vibrations Only Limited | Wholesale & retail | 2025 |
| Postal Logistics International Ltd | Transport & logistics | 2009 |
| Postcodes Property Limited | Real estate | 2017 |
| Potato Station Ltd | Hospitality | 2025 |
| Potion DE V Limited | Manufacturing | 2023 |
| Pound Plus Essex Ltd | Wholesale & retail | 2022 |
| Pound Plus Goodmayes Limited | Wholesale & retail | 2023 |
| Pound Plus Traders Ltd | Wholesale & retail | 2018 |
| POUND4U Ltd | Wholesale & retail | 2021 |
| Power Force Security Limited | Hospitality | 2024 |
| Power IT World Ltd | Administrative & support | 2010 |
| Power Pedals Ltd | Wholesale & retail | 2024 |
| Power Roofing Ltd | Construction | 2019 |
| Power Your Future Ltd | Education | 2025 |
| Powercell Global Limited | Other services | 2017 |
| Poweredhorse Limited | Manufacturing | 2021 |
| Powerpath Partners Ltd | Energy | 2024 |
| Powerscore Services Limited | Energy | 2013 |
| Powervirk Enterprise Limited | Information & communication | 2022 |
| Poweston Properties Ltd | Real estate | 2021 |
| Powwai C.I.C. | Education | 2024 |
| Pozer Construction Ltd | Construction | 2024 |
| PP Eyecare Limited | Health & social care | 2017 |
| PPA Gola Ltd | Real estate | 2026 |
| PPA Traders Limited | Wholesale & retail | 2026 |
| PPJ Facility Services Ltd | Administrative & support | 2026 |
| Ppmrx Ltd | Health & social care | 2025 |
| PPT Accountancy Solutions Ltd | Transport & logistics | 2025 |
| Pptuk Ltd | Manufacturing | 2025 |
| PQC Contractors Ltd | Real estate | 2025 |
| PQF Management Limited | Real estate | 2017 |
| PR Accounting & Consulting Ltd | Professional & scientific | 2019 |
| PR Accounting Solutions Limited | Professional & scientific | 2017 |
| PR Fire Solutions Ltd | Construction | 2019 |
| Prab Consultancy Services Limited | Information & communication | 2016 |
| Praba UK Limited | Real estate | 2002 |
| Practical PUB Company Ltd | Hospitality | 2017 |
| Pradi Properties Ltd | Real estate | 2023 |
| Pradita Property Limited | Real estate | 2023 |
| Praedium Capital Partners Ltd | Real estate | 2023 |
| Praiseforce Limited | Professional & scientific | 2001 |
| Praisegrain Limited | Professional & scientific | 2001 |
| Praj Limited | Households | 2024 |
| Pramukh Swami Limited | Wholesale & retail | 2020 |
| Pramukh Training Care Service Ltd | Health & social care | 2024 |
| Pranathi IT Solutions Limited | Information & communication | 2016 |
| Pranav Consultants Ltd | Information & communication | 2021 |