| Podcast Studios Ltd | Information & communication | 2021 |
| Podworks Limited | Hospitality | 2019 |
| Point Dume Estates Limited | Real estate | 2025 |
| Point Properties North West Ltd | Real estate | 2016 |
| Pointec Ltd | Wholesale & retail | 2018 |
| Poke Limited | Information & communication | 2020 |
| POL North West Ltd | Construction | 2021 |
| Poland Street Leisure Limited | Hospitality | 2023 |
| Polar Connect Ltd | Transport & logistics | 2024 |
| Polarbee Ltd | Professional & scientific | 2023 |
| Polaris GIS Ltd | Information & communication | 2009 |
| Polcrete Ltd | Manufacturing | 2015 |
| Polexa Academic Solutions Ltd | Education | 2024 |
| Polish Advice Centre (UK) Ltd | Administrative & support | 2008 |
| Polished Brows Limited | Other services | 2021 |
| Polka Dots and Pots CIC | Education | 2025 |
| Pollards International Limited | Extraterritorial | 1996 |
| Pollatech PVT Ltd | Information & communication | 2024 |
| Pollen Digital Ltd | Administrative & support | 2015 |
| Pollo's Piri Piri Limited | Administrative & support | 2025 |
| Polmart Mega Ltd | Wholesale & retail | 2019 |
| Polopre United Kingdom Limited | Construction | 2021 |
| Polpetta Liverpool Ltd | Hospitality | 2025 |
| Poly One AV Ltd | Manufacturing | 2026 |
| Poly Pigeon Games Ltd | Information & communication | 2024 |
| Poly UP Ltd | Construction | 2023 |
| Polydamas Limited | Real estate | 2020 |
| Polygonia Music Limited | Administrative & support | 2014 |
| Polylead Limited | Information & communication | 2016 |
| Polynome Ltd | Information & communication | 2015 |
| Polyphonica Ltd | Information & communication | 2018 |
| Pomade Realtors Ltd | Real estate | 2016 |
| Pomdpom Limited | Information & communication | 2014 |
| Pomegranate Digital Asset Investments Ltd | Financial services | 2026 |
| Pomegranate Nutrition Limited | Manufacturing | 2023 |
| Pomeranos Limited | Wholesale & retail | 2013 |
| Pompeii Limited | Health & social care | 2013 |
| Pondera SO Ltd | Professional & scientific | 2011 |
| Pondville Property Limited | Administrative & support | 2017 |
| Pondè Productions Ltd | Professional & scientific | 2025 |
| Ponentine Four Limited | Administrative & support | 2005 |
| Poodle Paws Limited | Wholesale & retail | 2020 |
| Pool Developments Limited | Other services | 2002 |
| Pool of Life | Arts & recreation | 2006 |
| Poole PR Limited | Professional & scientific | 2005 |
| Poomany Food and Wine Ltd | Wholesale & retail | 2023 |
| Poomsae Ltd | Wholesale & retail | 2021 |
| POP Box Events Ltd | Wholesale & retail | 2019 |
| Poparch Limited | Hospitality | 2022 |
| Popcorn Properties Ltd | Real estate | 2022 |
| Popcorn Yarns Limited | Manufacturing | 2024 |
| Pope Francis Catholic Multi Academy Trust | Education | 2020 |
| Popes Drainage Solutions Ltd | Administrative & support | 2026 |
| Popkup Ltd | Professional & scientific | 2025 |
| Poplar Construction Services Ltd | Construction | 2021 |
| Poplar Tree Solutions Ltd | Administrative & support | 2020 |
| Popokani ENG Ltd | Wholesale & retail | 2026 |
| Poppies Florists Liverpool Ltd | Wholesale & retail | 2025 |
| Poppin Rovers Ltd | Manufacturing | 2025 |
| Poppy Windows Limited | Construction | 2016 |
| Pops Clinic Ltd | Health & social care | 2021 |
| Popsugar Social & PR Limited | Other services | 2023 |
| Popular Auto Care Limited | Wholesale & retail | 2024 |
| POR & RI Limited | Other services | 2023 |
| Porcupine Music Management Ltd | Information & communication | 2018 |
| Pork Traders Oakwell Holdings Limited | Financial services | 2020 |
| Pork Traders Oakwell Limited | Manufacturing | 2003 |
| Porkellis Ventures LP | | 2018 |
| Port Causeway Limited | Construction | 2010 |
| Port Centric Logistics Partners Ltd | Professional & scientific | 2011 |
| Port Falmouth Limited | Administrative & support | 2010 |
| Port Line Staffing Ltd | Transport & logistics | 2024 |
| Port Part Limited | Administrative & support | 2015 |
| Port to Port Properties Ltd | Real estate | 2018 |
| Portable Offices (Hire) Limited | Administrative & support | 2001 |
| Portable Power Services Ltd | Energy | 2023 |
| Porter Properties Limited | Real estate | 2017 |
| Porterberry Custom Interiors Limited | Extraterritorial | 2023 |
| Porterhouse Mortgages Ltd | Financial services | 2020 |
| Portfolio Investment and Consultancy Limited | Other services | 2017 |
| Portfolio One Ltd | Real estate | 2025 |
| Portfolio Three Ltd | Construction | 2026 |
| Portfolio Two Ltd | Real estate | 2026 |
| Porthwen Estates Company | Financial services | 1943 |
| Portia Holdings Limited | Financial services | 2024 |
| Portico Court Limited | Households | 1985 |
| Portier Ltd | Professional & scientific | 2013 |
| Portio Nutrition Ltd | Health & social care | 2026 |
| Portis Ltd | Administrative & support | 2017 |
| Portland Care Solutions Ltd | Health & social care | 2023 |
| Portland Court Management (1993) Limited | Households | 1993 |
| Portland Fish & Chips (NW) Ltd | Hospitality | 2023 |
| Portlands Fish & Chips Limited | Hospitality | 2017 |
| Portside Branding Ltd | Professional & scientific | 2023 |
| Portside Compliance Limited | Professional & scientific | 2026 |
| Portside Place Developments Limited | Construction | 2023 |
| Portus Consulting Limited | Financial services | 2003 |
| Portus Lets Ltd | Real estate | 2020 |
| Portus Place 2 Ltd | Real estate | 2023 |
| Portus Place Ltd | Real estate | 2022 |