| PIX Electronics Ltd | Manufacturing | 2015 |
| Pixel Select Ltd | Construction | 2025 |
| Pixie Vision Limited | Information & communication | 2008 |
| Pixle Limited | Administrative & support | 2019 |
| PJ Caunter & SON Limited | Agriculture & fishing | 2004 |
| PJ Forbes Properties Limited | Real estate | 2011 |
| PJ Gavin Investments Ltd | Real estate | 2019 |
| PJ Harrison Decorators Limited | Construction | 2023 |
| PJB Logistics Solutions Ltd | Financial services | 2025 |
| PJE Veterinary Consultancy Ltd | Professional & scientific | 2013 |
| PJK Informatics Limited | Information & communication | 2013 |
| PK Group Limited | Administrative & support | 2006 |
| PK Group Ventures Limited | Financial services | 2013 |
| PK Partners LLP | | 2003 |
| Pk.Connect Cleaning Service Limited | Administrative & support | 2025 |
| Pkce Ltd | Professional & scientific | 2022 |
| PKM Connect Limited | Wholesale & retail | 2023 |
| Plan B Garden Design Ltd | Administrative & support | 2016 |
| Plan Money Limited | Financial services | 2005 |
| Planet 14 Landscapes Limited | Administrative & support | 2012 |
| Planet Ace Limited | Wholesale & retail | 1998 |
| Planet Mortgages Group Ltd | Financial services | 2021 |
| Planet Pick N MIX Ltd | Wholesale & retail | 2026 |
| Planks Pilates Ltd | Arts & recreation | 2025 |
| Planning Services (UK) Ltd | Professional & scientific | 2002 |
| Planscape Consultants Limited | Professional & scientific | 2023 |
| Plant House Holdings Ltd | Financial services | 2024 |
| Plant Spares Online Limited | Extraterritorial | 2014 |
| Plant Style Limited | Administrative & support | 2003 |
| Plantagenet Partners LLP | | 2015 |
| Planter Protect Ltd | Manufacturing | 2024 |
| Plantish Ltd | Wholesale & retail | 2024 |
| Plants for Nature Ltd | Agriculture & fishing | 2025 |
| Plants That Grow Direct Limited | Other services | 2005 |
| Plants That Grow Marketing Limited | Wholesale & retail | 2003 |
| Plantwise Garden Services Ltd | Administrative & support | 2024 |
| Plastic Doctor Ltd. | Construction | 2002 |
| Plastics 4 Projects Limited | Manufacturing | 2017 |
| Platinum Auto Solutions Ltd | Wholesale & retail | 2025 |
| Platinum Crown Corporation Limited | Real estate | 2011 |
| Platinum Crown Investments Limited | Administrative & support | 2007 |
| Platinum Event Hire Limited | Arts & recreation | 2017 |
| Platinum Hygiene Limited | Administrative & support | 2024 |
| Platinum Oak Limited | Education | 2011 |
| Platinum Social Care Ltd | Health & social care | 2015 |
| Platt Rushton LLP | | 2003 |
| Platview Technologies Limited | Information & communication | 2022 |
| Play Board Games Ltd | Wholesale & retail | 2019 |
| Player Development Programme Ltd | Education | 2022 |
| Player Platform Ltd | Administrative & support | 2022 |
| Players Show Ltd | Other services | 2008 |
| Playquip (UK) Limited | Manufacturing | 1993 |
| Pleasent Ways Ltd | Transport & logistics | 2025 |
| Plena Consulting Ltd | Professional & scientific | 2017 |
| Plot 107 Victoria House Limited | Real estate | 2022 |
| Plot 9 Oak Tree Place Elmstead Limited | Construction | 2025 |
| Plumb Bros Ltd | Manufacturing | 2013 |
| Plumbsure Limited | Construction | 2017 |
| Plumbuild Ltd | Construction | 2019 |
| Plummer Electrical Engineering Limited | Construction | 2024 |
| Plumridge Consulting Limited | Professional & scientific | 2014 |
| PLUS2 Legal Consulting LLP | | 2016 |
| Plusfile Limited | Real estate | 1989 |
| Pluslets Ltd | Real estate | 2013 |
| Plyco Ltd | Administrative & support | 2018 |
| PM GEN Ltd | Other services | 2021 |
| PM Tech (Anglia) Limited | Manufacturing | 2015 |
| Pmit Limited | Information & communication | 2011 |
| PML Building Consultancy Ltd | Construction | 2025 |
| Pmque Limited | Financial services | 2012 |
| PMS Works Limited | Manufacturing | 2022 |
| PMU Empire Ltd | Wholesale & retail | 2019 |
| PMW Garage Ltd | Wholesale & retail | 2019 |
| PN Management Consultant Limited | Administrative & support | 2012 |
| PNA Services (UK) Ltd | Wholesale & retail | 2014 |
| PNC Roofing & Cladding Ltd | Construction | 2022 |
| PNK Investments Limited | Administrative & support | 2014 |
| Poacher and Peacock Ltd | Administrative & support | 2026 |
| POC18 Ltd | Manufacturing | 2023 |
| Pockets & Sweller Limited | Construction | 2020 |
| Poco Inc Ltd | Professional & scientific | 2025 |
| Podium Publishing Ltd | Information & communication | 2021 |
| Podrian Ltd | Extraterritorial | 2009 |
| Pogatrans Ltd | Transport & logistics | 2024 |
| POI Pro Properties Limited | Real estate | 2024 |
| Point to Point Run Limited | Transport & logistics | 2017 |
| Pointer Investments (Rowhedge) Ltd | Real estate | 2020 |
| Polar Industries Ltd | Professional & scientific | 2023 |
| Polaris Gateway Care Ltd | Administrative & support | 2026 |
| Pole Barn Property Limited | Construction | 2022 |
| Pole Position Holdings Limited | Administrative & support | 2015 |
| Policywise Ltd | Extraterritorial | 2024 |
| Polo Food Group Limited | Wholesale & retail | 2024 |
| Polstead Community Shop C.I.C. | Wholesale & retail | 2010 |
| Polyarnaya Limited | Arts & recreation | 2015 |
| Polyclinic Healthcare UK Limited | Health & social care | 2021 |
| Polymath Technology Ltd | Information & communication | 2015 |
| Polymathicprojects Limited | Information & communication | 2023 |
| Pomery Planning Consultants Limited | Professional & scientific | 2011 |
| Pond Rescue Limited | Wholesale & retail | 2011 |