| Pickle Shack Ltd | Hospitality | 2014 |
| PIG and Olive Limited | Hospitality | 2017 |
| PIG PEN Functional Fitness Ltd | Arts & recreation | 2023 |
| PIG Shed Shop Ltd | Wholesale & retail | 2021 |
| Pilates for Runners Ltd | Other services | 2023 |
| Pile Foundations Ltd | Construction | 2026 |
| Pilgrim Safety Services Ltd | Professional & scientific | 2017 |
| Piling Plant Hire Ltd | Construction | 2024 |
| Pillar & Vale Ltd | Real estate | 2026 |
| Pilot Heating & Plumbing Ltd | Construction | 2023 |
| Pilton POP Festival Ltd | Arts & recreation | 2021 |
| Pincroft Estates Limited | Real estate | 2021 |
| Pincroft Property Limited | Real estate | 2017 |
| Pineapple Equity Ltd | Real estate | 2019 |
| Pineapple Investment Group Ltd | Real estate | 2020 |
| Pineapple Living Ltd | Real estate | 2021 |
| Pineapple Property Group Ltd | Real estate | 2018 |
| Pinecroft Candles Ltd | Manufacturing | 2023 |
| Ping’S Restaurant Exeter Limited | Hospitality | 2024 |
| Pinhoe Barbers Ltd | Other services | 2025 |
| Pinhoe Garage Devon Limited | Wholesale & retail | 2020 |
| Pink Spaghetti Limited | Administrative & support | 2015 |
| Pinky BOO Limited | Hospitality | 2021 |
| Pinnacle Glazing Limited | Construction | 2022 |
| Pinnacle Mortgages Limited | Financial services | 2019 |
| Pinnacle Photo Agency Limited | Professional & scientific | 2014 |
| Pinnacle Plants International Ltd | Agriculture & fishing | 2003 |
| Pinnacle Renovations Ltd | Construction | 2024 |
| Pinnacle Roofcare SW Ltd | Construction | 2023 |
| Pioneer Advantage Limited | Financial services | 2001 |
| PIP Portfolio Limited | Administrative & support | 2023 |
| Pipeplus (UK) Limited | Wholesale & retail | 1992 |
| Pipity Ltd | Wholesale & retail | 2013 |
| Piron Catering Ltd | Hospitality | 2018 |
| Pirouette Limited | Wholesale & retail | 2019 |
| Pitman Associates Ltd | Professional & scientific | 2011 |
| Pitts Court Management Company Limited | Households | 2011 |
| PIVOT-19 Ltd | Construction | 2020 |
| Pixalytics Ltd | Professional & scientific | 2012 |
| Pixel Playbox Ltd | Information & communication | 2025 |
| Pizza Mario Limited | Hospitality | 2018 |
| Pizza's (Teignmouth) Ltd | Hospitality | 2022 |
| Pjbtec Limited | Other services | 2015 |
| PJH & NR Property Ltd | Real estate | 2023 |
| PJH Ecology Ltd | Professional & scientific | 2024 |
| PJH Property Ltd | Real estate | 2023 |
| PJH Property Sourcing Ltd | Professional & scientific | 2024 |
| PKC (UK) Limited | Professional & scientific | 2005 |
| PKE Holdings Limited | Financial services | 2017 |
| Pkhold Limited | Financial services | 2025 |
| PL Planning Limited | Construction | 2013 |
| PL2 Plymouth (2016) Limited | Households | 2016 |
| Places of Smiles Ltd | Real estate | 2026 |
| Plain Air Ltd | Wholesale & retail | 2018 |
| Planet Direct Limited | Wholesale & retail | 1999 |
| Planet Imports Limited | Other services | 2016 |
| Planetary Processing Ltd | Wholesale & retail | 2022 |
| Planista Ltd | Professional & scientific | 2023 |
| Planit Property Solutions Ltd | Professional & scientific | 2022 |
| Planning Services Initiative Limited | Professional & scientific | 1998 |
| Plant and Engineering Services Limited | Manufacturing | 2007 |
| Plant Power Group Limited | Wholesale & retail | 2026 |
| Plant Power Solutions Ltd | Professional & scientific | 2024 |
| Plantipp UK Limited | Administrative & support | 2021 |
| Plants Direct (South West) Limited | Wholesale & retail | 2002 |
| Plants for a Future | Information & communication | 1996 |
| Plaster Perfect Ltd | Construction | 2019 |
| Plastexe Limited | Wholesale & retail | 2009 |
| Plastic South West Limited | Extraterritorial | 2008 |
| Platform Investing Ltd | Real estate | 2019 |
| PLATFORM2AI Ltd | Professional & scientific | 2026 |
| Platinum Admin Services Ltd | Professional & scientific | 2018 |
| Platinum Permanent Recruitment Limited | Professional & scientific | 2002 |
| Playnova Forge Ltd | Information & communication | 2025 |
| Plbl Limited | Hospitality | 2024 |
| Plcl Limited | Real estate | 2024 |
| Pleco World Limited | Wholesale & retail | 2021 |
| Pledge Consultancy Ltd | Information & communication | 2020 |
| PLL Asset Management Limited | Other services | 2012 |
| Plotline Planning Ltd | Professional & scientific | 2026 |
| Plunkett Yates Limited | Professional & scientific | 2010 |
| Plus Digital Consultancy Ltd | Information & communication | 2023 |
| Plusimage Limited | Manufacturing | 1994 |
| Plym Fish House Ltd | Hospitality | 2026 |
| Plymouth CNC Ltd | Manufacturing | 2022 |
| Plymouth Diesels Limited | Wholesale & retail | 2001 |
| Plymouth Laser Aesthetics Ltd | Other services | 2018 |
| Plymouth Ltd | Professional & scientific | 2025 |
| Plymouth Masonic Centre Limited | Other services | 2025 |
| Plymouth Motor Services Ltd | Wholesale & retail | 2021 |
| Plymouth Removers Limited | Transport & logistics | 2011 |
| Plymouth Tyre & Auto Care Ltd | Wholesale & retail | 2024 |
| Plymouth Vapour Blasting Ltd | Wholesale & retail | 2014 |
| Plymouth Victoria Ltd | Hospitality | 2018 |
| Plymouth Windscreens Ltd | Wholesale & retail | 2024 |
| Plytech U.K. Limited | Wholesale & retail | 1990 |
| Pmab Limited | Professional & scientific | 2018 |
| Pmbines Consulting Limited | Professional & scientific | 2017 |
| Pmbl Holdings Limited | Extraterritorial | 2015 |
| Pmbl Investments Limited | Extraterritorial | 2015 |