| Peter Regan Hair Studio Ltd | Other services | 2016 |
| Petisco Restaurants Limited | Hospitality | 2021 |
| Petites Modes Limited | Wholesale & retail | 2014 |
| Petrocar Limited | Administrative & support | 2023 |
| Pets & More UK Ltd | Wholesale & retail | 2021 |
| PG Developers Ltd | Real estate | 2024 |
| PG Investments (NW) Ltd | Real estate | 2013 |
| PH Plumbing & Heating Services Limited | Construction | 2015 |
| PHD Developments Ltd | Real estate | 2020 |
| PHD Holdings Ltd | Wholesale & retail | 2025 |
| Pheron Ltd | Information & communication | 2012 |
| Pheron SPV1 Limited | Extraterritorial | 2020 |
| Phil Wastell Ltd | Information & communication | 2024 |
| Philiain Building Services Limited | Construction | 2011 |
| Philiain Developments Limited | Real estate | 2008 |
| Philiain Property Services Limited | Real estate | 2009 |
| Phizzle Ltd | Information & communication | 2012 |
| Phoenix Heating and Home Improvements Ltd | Energy | 2015 |
| Phoenix Media Solutions Limited | Administrative & support | 2017 |
| Phoenix Metals Limited | Professional & scientific | 2025 |
| Phoenix Press Sale Limited | Manufacturing | 2009 |
| Phuong DO Properties Ltd | Real estate | 2025 |
| Physiotherapy 4 Life Limited | Health & social care | 2006 |
| Physiu Ltd | Health & social care | 2024 |
| Pickard and Co Accountants Limited | Professional & scientific | 2019 |
| Pickford Street Developments Limited | Real estate | 2019 |
| Picture Box Studios Limited | Administrative & support | 1994 |
| Pier to Pier Cleaning Limited | Administrative & support | 2022 |
| Pierre Accounting Limited | Professional & scientific | 2025 |
| Pigs Might FLY Limited | Information & communication | 1993 |
| Pike Properties Ltd | Real estate | 2017 |
| PIM Trading Ltd | Professional & scientific | 2020 |
| Pima Palestine Limited | Health & social care | 2006 |
| Pimss Data Systems Limited | Information & communication | 1995 |
| Pinaka Investments UK Ltd | Real estate | 2024 |
| Pint & Poppadams Ltd | Hospitality | 2024 |
| Pioneer Brush Company Limited | Manufacturing | 2013 |
| Pioneer Deals Ltd | Wholesale & retail | 2020 |
| Pippa Beauty Limited | Wholesale & retail | 2005 |
| Piquancy Strategy Ltd | Professional & scientific | 2023 |
| Pirnmill Ltd | Professional & scientific | 2017 |
| Pirsook Limited | Transport & logistics | 2018 |
| Pita Paradise PVT Ltd | Hospitality | 2025 |
| Pitch Software Studio Ltd | Professional & scientific | 2026 |
| Pitmore Properties (Commercial) Limited | Financial services | 2018 |
| Pitmore Properties Limited | Real estate | 2005 |
| Pixelsix Limited | Information & communication | 2005 |
| PJ Bond Limited | Wholesale & retail | 2012 |
| Placement Findr Limited | Hospitality | 2024 |
| Plan for ALL Limited | Professional & scientific | 2014 |
| Plan Printing Limited | Manufacturing | 2006 |
| Planap Ltd | Professional & scientific | 2018 |
| Planet Properties NW Ltd | Real estate | 2019 |
| Planet Wine Limited | Wholesale & retail | 1998 |
| PLANET44 Ltd | Real estate | 2025 |
| Planetdac UK Limited | Information & communication | 2025 |
| Plant Sustainability Engineering Ltd | Professional & scientific | 2024 |
| Planum Limited | Real estate | 2018 |
| Plastic 5URGEON Ltd | Health & social care | 2024 |
| Play Wynzo Group Ltd | Manufacturing | 2017 |
| Playercraft Basketball Limited | Education | 2024 |
| Plimb & Co Limited | Construction | 2023 |
| Plse Ltd | Professional & scientific | 2025 |
| Plummet Aviation Ltd | Other services | 2024 |
| Pluq Limited | Information & communication | 2024 |
| Plush Homeware Ltd | Construction | 2022 |
| Pluspup Ltd | Wholesale & retail | 2022 |
| Plywood Technology Limited | Wholesale & retail | 2010 |
| PM Growth Investment Limited | Real estate | 2021 |
| PM Retusto Ltd | Health & social care | 2019 |
| PMA Engineering Solutions Limited | Professional & scientific | 2023 |
| PMC Electrics Ltd | Information & communication | 2001 |
| PMC Telecom Ltd | Wholesale & retail | 2006 |
| Pmpn Ltd | Administrative & support | 2017 |
| PNJ Construction and Development Limited | Construction | 2024 |
| PNJ Electrics Ltd | Manufacturing | 2025 |
| PNJ Living Limited | Real estate | 2025 |
| PNJ Sales and Lettings Limited | Real estate | 2025 |
| PNJ Ventures Limited | Real estate | 2025 |
| Pochin Midpoint Limited | Real estate | 2016 |
| Point 3 Developments Limited | Construction | 2003 |
| Policybase Limited | Information & communication | 2026 |
| Poole Family Financial Ltd | Financial services | 2020 |
| Poplar Garage Sale Ltd | Wholesale & retail | 2022 |
| Popular Global Ltd | Wholesale & retail | 2017 |
| Pornichet Ltd | Real estate | 2020 |
| Portage Advisory Ltd | Information & communication | 2026 |
| Portfolio Partners Limited | Transport & logistics | 2009 |
| Porthmeor House Management Company (ST. Ives) Limited | Households | 2007 |
| Porthminster Apartments Limited | Households | 2009 |
| Portwell Engineering Ltd | Professional & scientific | 2003 |
| Positiveminds Care Group Ltd | Health & social care | 2015 |
| Potentially Golf Ltd | Information & communication | 2025 |
| Power Linen Ltd | Administrative & support | 2025 |
| Poynton Local Ltd | Transport & logistics | 2015 |
| PPG Recruitment Solutions Limited | Professional & scientific | 2018 |
| PPM Recruitment Limited | Administrative & support | 2002 |
| PPM Transformations Limited | Professional & scientific | 2014 |
| PR Ceilings & Partitions Limited | Construction | 2018 |
| Prarna Limited | Real estate | 2022 |