| Perhentian Associates Ltd | Professional & scientific | 2022 |
| Peritus Recruits Ltd | Administrative & support | 2025 |
| Permanence Limited | Real estate | 2008 |
| Person Centred Academy Ltd | Professional & scientific | 2025 |
| Pet Media Ltd | Professional & scientific | 2008 |
| Peter J Starley Limited | Wholesale & retail | 2012 |
| Peter Mumford Designs Limited | Arts & recreation | 2006 |
| Peter Nicholls Yacht Builders Limited | Manufacturing | 1993 |
| Pharmagen Limited | Wholesale & retail | 1952 |
| Pharmaspy Ltd | Professional & scientific | 2022 |
| Phase Two Developments Ltd | Real estate | 2019 |
| Phat Buns (Franchise) Limited | Hospitality | 2020 |
| Phil Collins Limited | Professional & scientific | 2016 |
| Phillips Property Nexus Developments Ltd | Real estate | 2024 |
| Phillips Property Nexus Serviced Accommodation Limited | Hospitality | 2025 |
| Philos Psychology Ltd | Health & social care | 2023 |
| Phoenix Auto Property Holdings Ltd | Real estate | 2024 |
| Phoenix Fabrications Ltd | Manufacturing | 2019 |
| Picadoor Limited | Extraterritorial | 2010 |
| Pickerings Holdings Ltd | Financial services | 2019 |
| Pickerings Property Holdings Ltd | Financial services | 2019 |
| Pickerings Property Ltd | Real estate | 2019 |
| Picos Consulting Limited | Professional & scientific | 2023 |
| Pide.Biz Food Limited | Hospitality | 2019 |
| Pietosi Ltd | Professional & scientific | 2021 |
| Pillerton Garage Limited | Wholesale & retail | 2008 |
| Pillows & Porcelain Limited | Wholesale & retail | 2013 |
| Pingbit Health Limited | Information & communication | 2023 |
| Pink Lily Consulting Limited | Administrative & support | 2016 |
| Pinley Holdings Ltd | Financial services | 2026 |
| Pinnacle Management Consultancy Ltd | Professional & scientific | 2017 |
| Pinnacle Plumbing Heating and GAS Ltd | Construction | 2022 |
| Pinnacle Property Services Group Ltd | Construction | 2019 |
| Pinner and Sons Limited | Construction | 2012 |
| Pinner Court (Harborne) Limited | Households | 1997 |
| Pinpoint Agricultural Services Limited | Agriculture & fishing | 2020 |
| Pioneer Care Limited | Education | 1989 |
| Pipe Source UK Ltd | Wholesale & retail | 2004 |
| Pipeline Resilience Services Limited | Construction | 2021 |
| Pistachio Marketing Limited | Professional & scientific | 2013 |
| Pixel Studios Limited | Information & communication | 1999 |
| Pixi Group Limited | Information & communication | 2024 |
| Pixotope Technologies UK Limited | Information & communication | 2021 |
| Pizza & Beer Ltd | Hospitality | 2023 |
| Pizza Junction Kineton Ltd | Hospitality | 2025 |
| PJ Projects & Solutions Limited | Other services | 2023 |
| Pjsa Consulting Ltd | Information & communication | 2025 |
| PJT Print Ltd | Manufacturing | 2026 |
| PK & JJ Limited | Real estate | 2024 |
| Pkel Property Care Ltd | Households | 2023 |
| Placements.Io UK Ltd | Administrative & support | 2019 |
| Places for Children (PFP) Limited | Administrative & support | 2002 |
| Plain English Communications Limited | Professional & scientific | 2010 |
| Plan H Projects Ltd | Real estate | 2019 |
| Planet Based Foods Europe Ltd | Wholesale & retail | 2023 |
| Planhat Ltd | Information & communication | 2022 |
| Plant Carbon Ltd | Manufacturing | 2023 |
| Plant Health Solutions Ltd | Agriculture & fishing | 2010 |
| Plantnutrition Limited | Extraterritorial | 2010 |
| Platinum Lifestyles Group Ltd | Manufacturing | 2021 |
| Platmix Limited | Real estate | 1997 |
| Plato Trust Ltd | Hospitality | 2008 |
| Playbox Theatre Limited | Arts & recreation | 1997 |
| PLD Advanced Logistics Limited | Transport & logistics | 2024 |
| Plum Time Limited | Professional & scientific | 2017 |
| Plymouth Court Limited | Households | 1985 |
| PM Finance Ltd | Professional & scientific | 2013 |
| Pmkconsult Building Consultancy Services Ltd | Professional & scientific | 2025 |
| Pointzeroone Limited | Financial services | 2021 |
| Poise Ltd | Administrative & support | 2017 |
| Poke Point Ltd | Hospitality | 2021 |
| Polar Ice Limited | Information & communication | 2008 |
| Policomp Limited | Information & communication | 2021 |
| Polish Steam Ltd | Administrative & support | 2016 |
| Polyflow Ltd | Information & communication | 2022 |
| Poolcare Leisure Limited | Other services | 2001 |
| Poply's (GB) Limited | Wholesale & retail | 2020 |
| Poppyseed Collective Ltd | Wholesale & retail | 2023 |
| Portfolio Personal Investments Limited | Financial services | 2025 |
| Portland Place East Management Company Limited | Real estate | 2013 |
| Portrest Limited | Transport & logistics | 1983 |
| POS Contract Interiors Ltd | Construction | 2021 |
| Posh Paws by ZOE Ltd | Other services | 2018 |
| Position Property Ltd | Real estate | 2018 |
| Positive Bespoke Business Solutions Limited | Financial services | 2025 |
| Postbox Bakes Limited | Manufacturing | 2025 |
| Postpullers (UK) Limited | Manufacturing | 2012 |
| Potential Fulfilment Limited | Professional & scientific | 2017 |
| Potterton International Limited | Professional & scientific | 1947 |
| Power Ahead Marketing Limited | Information & communication | 2025 |
| Power JET Washing Ltd | Administrative & support | 2024 |
| Power Jointing and Distribution Services Limited | Construction | 2000 |
| Power K1 Academy Limited | Arts & recreation | 2025 |
| Powis Limited | Construction | 2015 |
| Powsan Ltd | Real estate | 2018 |
| PPP Operations Ltd | Professional & scientific | 2016 |
| PPS GAS and Electric Limited | Construction | 2011 |
| PQ Precision Limited | Manufacturing | 2017 |
| PR Food Development Ltd | Health & social care | 2023 |
| Pragmasafe Ltd | Professional & scientific | 2026 |