| Passmore Builders Limited | Construction | 2009 |
| Passmore Care Services Limited | Health & social care | 2004 |
| Passmore Carpenters Limited | Construction | 2009 |
| Passmore Holdings Limited | Financial services | 2009 |
| Passmore Properties South West Ltd | Real estate | 2023 |
| Patercaine Ltd | Financial services | 2018 |
| Paternoster (Exeter) Limited | Construction | 2015 |
| Paternoster SW Limited | Real estate | 2023 |
| Pathdirect Limited | Health & social care | 2018 |
| Pathfinders (SW) Ltd | Administrative & support | 2019 |
| Pattern (Trade Fairs) Limited | Administrative & support | 2023 |
| Pattern Limited | Wholesale & retail | 2012 |
| Pattinson's & Dart Properties Ltd | Real estate | 2021 |
| Paul Burn Radiology Services Limited | Health & social care | 2019 |
| Paul Carpenter (IPF) Limited | Construction | 2010 |
| Paul Humphries Architects Limited | Professional & scientific | 2004 |
| Paul Jackson Landscaping & Fencing Ltd | Administrative & support | 2022 |
| Paul Kane Ltd | Construction | 2008 |
| Paul Netherton Risk & Resilience Consultancy Ltd | Professional & scientific | 2020 |
| Paul Philip Clark Limited | Information & communication | 2017 |
| Paul Smoker Roofing Ltd | Construction | 2018 |
| Paulex Environmental Limited | Water & waste | 2004 |
| Paulls Lane Management Company Limited | Households | 2025 |
| Pavecraft Solutions Ltd | Administrative & support | 2025 |
| Pavelond Limited | Financial services | 2021 |
| Pavigym UK Limited | Wholesale & retail | 2022 |
| Pavilion Construction Limited | Construction | 1988 |
| Pavilion Place Ltd | Real estate | 2007 |
| Pavis Consultancy Ltd | Administrative & support | 2023 |
| PAY Day Justice Ltd | Financial services | 2017 |
| Paylink Group Limited | Professional & scientific | 2025 |
| PAYROLL4BUSINESS (South West) Ltd | Professional & scientific | 2017 |
| PB Prime Delivery Services Ltd | Transport & logistics | 2022 |
| Pbc&Partners Ltd | Wholesale & retail | 2026 |
| PC Financial Planning Limited | Professional & scientific | 2018 |
| PC Fleming Limited | Manufacturing | 2022 |
| PC Milton Builders Limited | Construction | 2021 |
| PC Milton Group Limited | Construction | 2021 |
| PC Milton Property Developments Limited | Construction | 2021 |
| PC MOT Ltd | Other services | 2026 |
| PCI Education Limited | Education | 2018 |
| PCL Planning Limited | Professional & scientific | 2012 |
| Pcyz Ltd | Real estate | 2023 |
| Pddm Ltd | Professional & scientific | 2015 |
| PEA Green Studio Limited | Professional & scientific | 2017 |
| Peacegrove Homes Ltd | Real estate | 2024 |
| Peach 37 Ltd | Other services | 2024 |
| Peach Mortgages Limited | Financial services | 2014 |
| Peahen MG Limited | Professional & scientific | 2023 |
| Peak Performance Exeter Limited | Other services | 2017 |
| Peak Physio Ltd | Health & social care | 2020 |
| Pearce (Havett) Limited | Construction | 2014 |
| Pearl Scaffolding Ltd | Manufacturing | 2023 |
| Pearson Family Homes Ltd | Real estate | 2025 |
| Pearson North Devon Limited | Manufacturing | 2001 |
| Pearwood Capital Ltd | Real estate | 2023 |
| Pearwood Light Ltd | Real estate | 2023 |
| Peculiar Gentleman Limited | Hospitality | 2018 |
| Pedigree Toys and Brands Limited | Administrative & support | 2017 |
| Peel House (Okehampton) Management Limited | Households | 1997 |
| Peeps Property Limited | Real estate | 2020 |
| Peerless Visual Effects Limited | Information & communication | 2025 |
| Pegacis Limited | Information & communication | 2018 |
| Pegasus Facilities Ltd | Administrative & support | 2024 |
| Pemtec Ltd. | Professional & scientific | 2013 |
| Pencleave 1 Limited | Construction | 2011 |
| Pencleave 2 Limited | Construction | 2013 |
| Pencleave Limited | Financial services | 2011 |
| Pencombe Associates Ltd | Real estate | 2004 |
| Pendle Power Limited | Financial services | 2014 |
| Pendle Renewable Power Limited | Energy | 2015 |
| Penhaven Barns Limited | Hospitality | 2025 |
| Penhaven Court Management Ltd | Households | 2022 |
| Penhaven Developments Limited | Financial services | 2018 |
| Penhaven Estates Limited | Real estate | 2009 |
| Penhaven Rectory Barns & Meadow Limited | Construction | 2011 |
| Peninsula Marquee Hire Limited | Administrative & support | 2009 |
| Peninsula Care Homes Limited | Other services | 2002 |
| Peninsula Dental Limited | Health & social care | 2021 |
| Peninsula Networks Limited | Construction | 1991 |
| Peninsula Private Medical Ltd | Health & social care | 2024 |
| Peninsula Project Consulting Ltd | Professional & scientific | 2017 |
| Peninsula Properties (Exeter) Limited | Construction | 1988 |
| Peninsula Trustees Limited | Professional & scientific | 1990 |
| Peninsular Developments (SW) Ltd | Construction | 2010 |
| Penlee Point Properties Limited | Real estate | 2017 |
| Penndrumm (Looe) Management Company Limited | Real estate | 2018 |
| Pennon Defined Contribution Pension Trustee Limited | Professional & scientific | 2014 |
| Pennon Group PLC | Professional & scientific | 1989 |
| Pennon Limited | Professional & scientific | 1990 |
| Pennon Pension Trustees Limited | Professional & scientific | 1989 |
| Pennon Power Aberdeenshire Limited | Energy | 2017 |
| Pennon Power Fife Limited | Energy | 2020 |
| Pennon Power Limited | Professional & scientific | 1962 |
| Pennon Power Lite Limited | Construction | 1998 |
| Pennon Water Services Limited | Administrative & support | 2015 |
| Pennsylvania Motors Southwest Ltd | Wholesale & retail | 2021 |
| Pennsylvania Property Ltd | Real estate | 2020 |
| Penny Jones Mortgages Limited | Financial services | 2020 |
| Penny on the Moor Ltd | Hospitality | 2026 |