| Platform One Limited | Financial services | 2009 |
| Platform One Nominee Limited | Financial services | 2011 |
| Platform One Pension Trustees Limited | Financial services | 2023 |
| Plato Nominees Limited | Financial services | 2016 |
| Platyplus Limited | Information & communication | 2025 |
| Playbook Property Limited | Wholesale & retail | 2025 |
| Player FUN Ltd | Wholesale & retail | 2026 |
| Plgeek Ltd | Information & communication | 2022 |
| Ploughfax Limited | Professional & scientific | 1989 |
| Plpi Services Limited | Construction | 2013 |
| Pluk Group Ltd | Transport & logistics | 2021 |
| Plumbers 365 National Ltd | Construction | 2025 |
| PMA Consulting Limited | Professional & scientific | 2018 |
| Pmat Consulting Limited | Information & communication | 2022 |
| Pmq&I Ltd | Professional & scientific | 2023 |
| PN Consulting Limited | Information & communication | 2019 |
| PNE Projects Limited | Administrative & support | 2026 |
| PO4 Ltd | Wholesale & retail | 2022 |
| Pogles Wood Ltd | Health & social care | 2019 |
| Point Property Management Limited | Real estate | 2017 |
| Polar Carpentry Ltd | Construction | 2023 |
| Polar Heating Limited | Construction | 2011 |
| Polar House Investments Ltd | Real estate | 2025 |
| Polaris Vehicle Conversion Systems Limited | Manufacturing | 2026 |
| Polarity Solutions Ltd | Professional & scientific | 2026 |
| Pole Position Consulting Limited | Professional & scientific | 2013 |
| Polian Software Limited | Information & communication | 2012 |
| Polkadot Passport Ltd | Information & communication | 2022 |
| Polvellan Mousehole Management Company Limited | Households | 2021 |
| Polykinesis Limited | Information & communication | 2025 |
| Polymath Software Ltd | Information & communication | 2026 |
| Polymita Ltd | Real estate | 2025 |
| Pongoose Ltd | Manufacturing | 2018 |
| Poole Boat Transport Ltd. | Transport & logistics | 2008 |
| Poole Cardiologist Limited | Health & social care | 2022 |
| Poole Charters Limited | Administrative & support | 2025 |
| Poole Electrical Contractors Limited | Construction | 2025 |
| Poole Health & Wellbeing Centre Ltd | Health & social care | 2025 |
| Poole Process Solutions Limited | Hospitality | 2007 |
| Popular OWL Labs Ltd | Information & communication | 2018 |
| Port Nicholson Trading Ltd | Professional & scientific | 2018 |
| Porthouse Bristol Limited | Households | 2017 |
| Portland Place Bournemouth Limited | Households | 1999 |
| Portman's View Management Company Limited | Households | 2021 |
| Portwrinkle Developments and Hospitality Ltd | Construction | 2023 |
| Positive Consultancy Solutions Limited | Information & communication | 2017 |
| Positive Lettings Limited | Real estate | 2011 |
| Potential Plus Limited | Arts & recreation | 2001 |
| Potters Trading Ltd | Agriculture & fishing | 2025 |
| Povall System Engineering Ltd | Information & communication | 2014 |
| Powell Literacy Tech Limited | Information & communication | 2026 |
| Powell Road RTM Limited | Other services | 2013 |
| Power Naturally Holdings Limited | Financial services | 2018 |
| Power Naturally Limited | Construction | 2008 |
| Power PAC Solutions Limited | Information & communication | 2024 |
| Powercademy Ltd | Information & communication | 2025 |
| Powerscourt Management 2006 Limited | Households | 2006 |
| Powerup Electrical (Dorset) Ltd | Construction | 2022 |
| PR Infotech Limited | Information & communication | 2017 |
| Practical Ascension Ltd | Education | 2023 |
| Practice Perfection Services Ltd | Professional & scientific | 2015 |
| Praestantia Developments Ltd | Real estate | 2020 |
| Praetor Health Limited | Health & social care | 2025 |
| Precision Agriculture Africa Ltd | Agriculture & fishing | 2023 |
| Precision Coating Systems Limited | Construction | 2014 |
| Premier Flightcrew Services Ltd | Other services | 2024 |
| Premier Life Skills Limited | Administrative & support | 2006 |
| Prestige Flights Limited | Administrative & support | 2014 |
| Prestige H I Ltd | Administrative & support | 2017 |
| Prestige Holidays Limited | Administrative & support | 1989 |
| Prestige Holidays Partnership LLP | | 2021 |
| Prestige Home Designs Limited | Construction | 2013 |
| Prestige Kitchens and Bedrooms Limited | Construction | 2025 |
| Prestige Porsche Rental Limited | Administrative & support | 2024 |
| Presto Heating & Cooling Ltd | Construction | 2020 |
| Pretorius Fish and Chips Ltd | Hospitality | 2018 |
| Prevail Communications Advisors Limited | Professional & scientific | 2014 |
| Preventative Health Doctors Limited | Health & social care | 2014 |
| Price Energy Advisory Ltd | Mining & quarrying | 2019 |
| Prices Fish and Chips Limited | Hospitality | 2016 |
| Prigma Limited | Information & communication | 2009 |
| Primary IT Consulting Limited | Information & communication | 2023 |
| Primavera Consulting Ltd | Professional & scientific | 2024 |
| Prime Bytes Consulting Limited | Information & communication | 2021 |
| Prime Demolition Limited | Construction | 2012 |
| Prime Demolition Properties Limited | Real estate | 2024 |
| Primera Solar Energy Ltd | Construction | 2023 |
| Primespark Solutions Ltd | Information & communication | 2025 |
| Primitive Control Ltd | Administrative & support | 2023 |
| Primrose Farm CL and Storage Ltd | Wholesale & retail | 2024 |
| Priory Applied Psychology Limited | Education | 2026 |
| Priory Gardens (West Moors) Management Limited | Households | 1973 |
| Pritchard Projects Limited | Administrative & support | 2022 |
| Pritech IT Solutions Limited | Information & communication | 2009 |
| Prize Home Products Ltd | Wholesale & retail | 2015 |
| Pro Cleaning Group Limited | Administrative & support | 2021 |
| Pro Drainage Limited | Construction | 2015 |
| Pro Drainage Pitch Fibre Specialists Ltd | Administrative & support | 2016 |
| Pro Drainage Supplies Ltd | Construction | 2018 |
| Pro Property Group Ltd | Real estate | 2018 |