| Property Publishing Group Limited | Information & communication | 2016 |
| Property South West Ltd | Real estate | 2019 |
| Propertyworxz Ltd | Real estate | 2024 |
| Prorec Music Ltd | Information & communication | 2019 |
| Proseal Systems Ltd | Construction | 2026 |
| Proserv Southwest Limited | Wholesale & retail | 2022 |
| Prospect House Management Company Limited | Households | 1984 |
| Prosper Property (Avenue Road) LLP | | 2018 |
| Prosper Property (Park Avenue) Ltd | Real estate | 2019 |
| Prosper Property Ltd | Real estate | 2017 |
| Prosper Property Management Ltd | Real estate | 2018 |
| Prosper Serviced Accommodation Ltd | Hospitality | 2017 |
| Prosperitas English Language Training Ltd | Education | 2010 |
| Protean Engineering Limited | Professional & scientific | 1995 |
| Protect Maintenance SW Ltd | Construction | 2025 |
| Protection Racket Limited | Wholesale & retail | 2001 |
| Protective Wear Supplies Ltd | Wholesale & retail | 2013 |
| Protectus Security Solutions Ltd | Administrative & support | 2012 |
| Protelligent Limited | Information & communication | 2006 |
| Proteq Engineering and Commissioning Limited | Professional & scientific | 2018 |
| Proton Mechanical Engineering Limited | Administrative & support | 2007 |
| Protserv Ltd | Transport & logistics | 2020 |
| Proweld Industrial Gases Ltd | Wholesale & retail | 2003 |
| Prowse Property Limited | Real estate | 2025 |
| Proxima Website Design Ltd | Information & communication | 2018 |
| Prrime Oasis Ltd | Wholesale & retail | 2024 |
| Pryn Court Developments Limited | Real estate | 2020 |
| Pryn Court Residents Ltd | Households | 2017 |
| PS Dwellings Ltd | Real estate | 2024 |
| PSG Classics Ltd | Wholesale & retail | 2020 |
| PSG Properties SW Ltd | Real estate | 2025 |
| Psja Holdings Limited | Real estate | 2019 |
| Pspicturefilms Ltd | Information & communication | 2022 |
| Pssc Plymouth Schools Shareholding Company Limited | Administrative & support | 2015 |
| PSW (Holdings) Ltd | Extraterritorial | 2011 |
| PSW Trading Limited | Administrative & support | 2009 |
| Psywarrior Ltd | Administrative & support | 2018 |
| PT Plymouth Ltd | Real estate | 2017 |
| Ptasc Ltd | Transport & logistics | 2023 |
| PTC Motor Company Limited | Wholesale & retail | 2025 |
| Ptden Ltd | Health & social care | 2014 |
| PTG Holdings Ltd | Professional & scientific | 2008 |
| PTG Transport Ltd | Wholesale & retail | 2018 |
| PTG Workholding Limited | Manufacturing | 1994 |
| Ptjw Solutions Ltd | Professional & scientific | 2016 |
| PUB2PUB Adventures Ltd | Administrative & support | 2018 |
| Public Open Space Limited | Real estate | 2012 |
| Puffin Property Management Ltd | Real estate | 2013 |
| Pull the Trigger Ltd | Wholesale & retail | 2018 |
| Pulse Hydrographic Services Ltd | Professional & scientific | 2009 |
| Pulse Training Limited | Education | 2012 |
| Pulsewave Medical Ltd | Health & social care | 2024 |
| Punlight Limited | Households | 1988 |
| Pupcakes Ltd | Manufacturing | 2020 |
| Purdy's Punjabi Cuisine Community Interest Company | Education | 2023 |
| Pure Delight Limited | Wholesale & retail | 2026 |
| Pure Facilities Services Ltd | Administrative & support | 2024 |
| Pure Flying Limited | Transport & logistics | 2019 |
| Pure Gold Aesthetics Ltd | Other services | 2019 |
| Pure Gold Properties Ltd | Households | 2023 |
| Pure Homes Property Developments Ltd | Real estate | 2019 |
| Pure Property Maintenance (SW) Limited | Other services | 2018 |
| Pure Sedation Ltd | Health & social care | 2022 |
| Pure Synergie Maze Hill Ltd | Other services | 2015 |
| Pure- Guchi Limited | Professional & scientific | 2024 |
| Purescene Solutions Ltd | Administrative & support | 2025 |
| Pureserviced Ltd | Administrative & support | 2017 |
| Purity Organisation CIC | Professional & scientific | 2021 |
| Purple Letting Limited | Real estate | 2013 |
| Purple Telecommunications Limited | Information & communication | 2004 |
| Purpledot Limited | Hospitality | 2001 |
| Purse Consultancy Services Ltd | Administrative & support | 2025 |
| Pushed Limited | Professional & scientific | 2004 |
| Puslinch Estate Ltd | Extraterritorial | 2020 |
| Putnam Capital Ltd | Financial services | 2023 |
| Putnam Health Co Ltd. | Manufacturing | 1997 |
| Putnam Holdings Limited | Manufacturing | 2022 |
| Putnam Land Ltd | Transport & logistics | 2018 |
| Putnam Property Ltd | Real estate | 2017 |
| Pvss Ltd | Wholesale & retail | 2017 |
| PVV Stores Ltd | Wholesale & retail | 2024 |
| PW Building & Roofing Limited | Construction | 2013 |
| PW Electrical Contractors Ltd | Manufacturing | 2024 |
| PW Electrical Services (SW) Ltd | Construction | 2023 |
| PWS Holdings Limited | Professional & scientific | 2019 |
| Pyburn Properties Limited | Households | 2025 |
| Pyramid Electrical Services Ltd | Construction | 2016 |
| Pyrik Ltd | Professional & scientific | 2021 |
| Pyropress (Propco) Limited | Professional & scientific | 2018 |
| Pyropress Limited | Professional & scientific | 2018 |
| Q a B Properties Limited | Real estate | 1997 |
| Q Best Times Limited | Hospitality | 2015 |
| Q-Resin Cosmetic Repairs Ltd | Construction | 2018 |
| QBP Motors Ltd | Wholesale & retail | 2023 |
| QC Engineering Group Limited | Professional & scientific | 2017 |
| QC Engineering Solutions Ltd | Manufacturing | 2017 |
| QC Inspection Services Ltd | Mining & quarrying | 2018 |
| QCH Manufacturing Ltd. | Professional & scientific | 2020 |
| Qerb Holdings Ltd | Professional & scientific | 2015 |
| QGS Holdings Limited | Professional & scientific | 2012 |