| Potentate.Io Limited | Information & communication | 2024 |
| Poulton Holdings Limited | Real estate | 1993 |
| Pour Wines Ltd | Wholesale & retail | 2026 |
| POW Trading Ltd | Hospitality | 2024 |
| Powell Financial Planning Limited | Financial services | 2017 |
| Power Fitness Gymwear LLP | | 2018 |
| Power Leadz Limited | Professional & scientific | 2025 |
| Power Move Services Limited | Energy | 2026 |
| Power Strategies Ltd | Financial services | 2025 |
| Power Testing Limited | Professional & scientific | 1969 |
| Power Vision Ltd | Wholesale & retail | 2021 |
| Powered by Percussion Ltd | Education | 2020 |
| Powerful Roofing Ltd | Construction | 2022 |
| Powergrid Electrical Services Limited | Construction | 2021 |
| Powerload Ltd | Construction | 2024 |
| Powerphase Electrical Ltd | Construction | 2006 |
| PP Trusts Ltd | Professional & scientific | 2014 |
| PP Wealth Limited | Financial services | 2005 |
| PPM Automation Limited | Construction | 2025 |
| PQ Dog Day Care Limited | Agriculture & fishing | 2021 |
| PR Commerce Ltd | Wholesale & retail | 2026 |
| PR Media Payroll Limited | Administrative & support | 2019 |
| Practical Property Services (London) Limited | Construction | 2008 |
| Pradel Property Developments Ltd | Construction | 2024 |
| Praemando International Ltd | Administrative & support | 2019 |
| Pragati Core Limited | Information & communication | 2025 |
| Pragmatix Advisory Limited | Professional & scientific | 2020 |
| Pranav Software Technologies Limited | Information & communication | 2012 |
| Pratts Management Limited | Professional & scientific | 2024 |
| Pratts Property Limited | Real estate | 2021 |
| Pravar Services Limited | Professional & scientific | 2017 |
| Praveen and Harika Ltd | Real estate | 2018 |
| Prayaas Ltd | Real estate | 2021 |
| PRC Contractors Ltd | Construction | 2021 |
| Precept Homes Limited | Construction | 2020 |
| Precise Environmental Limited | Construction | 2011 |
| Precision Asbestos Consultancy Ltd | Professional & scientific | 2023 |
| Precision Balancing Limited | Financial services | 2020 |
| Precision Build Essex Limited | Construction | 2024 |
| Precision Estimating Essex Limited | Professional & scientific | 2024 |
| Precision FX Ltd | Information & communication | 2023 |
| Precision Gdns Ltd | Administrative & support | 2022 |
| Precision Slim Solutions Ltd | Health & social care | 2026 |
| Precision Vehicles London Limited | Wholesale & retail | 2018 |
| Precision Vehicles Storage Limited | Administrative & support | 2022 |
| Predata Systems Ltd | Information & communication | 2024 |
| Premaberg House Essex Ltd | Real estate | 2021 |
| PREMCALL24 Limited | Extraterritorial | 2013 |
| Premier BIM Ltd | Information & communication | 2016 |
| Premier Commissioning Limited | Water & waste | 2007 |
| Premier Consult Limited | Health & social care | 2022 |
| Premier Design (Essex) Limited | Professional & scientific | 2003 |
| Premier Doors Nationwide Limited | Construction | 2016 |
| Premier Engineers (UK) Limited | Professional & scientific | 2005 |
| Premier Food Trading Ltd | Wholesale & retail | 2017 |
| Premier Football Academy Ltd | Education | 2024 |
| Premier Leisure (U.K.) Limited | Hospitality | 1988 |
| Premier Martial Arts Essex Ltd | Arts & recreation | 2021 |
| Premier Painting Services Chelmsford Ltd | Construction | 2025 |
| Premier Plants UK Limited | Agriculture & fishing | 2002 |
| Premier Sailing Ltd | Education | 2016 |
| Premier Services Group Limited | Extraterritorial | 2016 |
| Premises Licence Ltd | Administrative & support | 2020 |
| Premium Stamp Brokers Limited | Professional & scientific | 2002 |
| Premium Training Academy Limited | Education | 2017 |
| Prepmaster (Flooring Services) Ltd | Construction | 2016 |
| Preppyness Limited | Wholesale & retail | 2012 |
| Prestige Bedrooms Surrey Limited | Manufacturing | 2023 |
| Prestige Capital Investing Ltd | Other services | 2017 |
| Prestige Car Hunters Limited | Wholesale & retail | 2015 |
| Prestige ENG (UK) Limited | Wholesale & retail | 2013 |
| Prestige Fitted Wardrobes Ltd | Manufacturing | 2018 |
| Prestige Funeral Services Ltd | Arts & recreation | 2004 |
| Prestige Staffing Limited | Administrative & support | 2023 |
| Prestigeetransfer Limited | Transport & logistics | 2024 |
| Prestigious Car Repairs Ltd | Wholesale & retail | 2016 |
| Prestons Garages Limited | Wholesale & retail | 1961 |
| Pretlove's Blinds Limited | Construction | 2019 |
| Price Edge Ltd | Wholesale & retail | 2024 |
| Pride Essex Limited | Arts & recreation | 2016 |
| Pride Point Pathways CIC | Education | 2026 |
| Priest Property Developments Limited | Real estate | 2015 |
| Prima Support Services Ltd | Health & social care | 2025 |
| Primagtius Administration Services Limited | Real estate | 2009 |
| Primal Lens Limited | Information & communication | 2023 |
| Primarysite Limited | Information & communication | 2005 |
| Prime Blueprint Ltd. | Construction | 2025 |
| Prime Doctors Limited | Health & social care | 2013 |
| Prime Essex Properties Limited | Real estate | 2017 |
| Prime Facility Solutions Limited | Administrative & support | 2026 |
| Prime Foreign Exchange Ltd | Financial services | 2012 |
| Prime Interior Services Ltd | Construction | 2015 |
| Prime Learning Academy Ltd | Education | 2025 |
| Prime M&M Logistics Ltd | Wholesale & retail | 2025 |
| Prime Principle Limited | Information & communication | 2004 |
| Prime Rental Management Limited | Real estate | 2017 |
| Prime TMS Ltd | Wholesale & retail | 2025 |
| Prime Training Limited | Education | 2018 |
| Primefix Essex Maintenance Ltd | Construction | 2025 |
| Primepath Maths Ltd | Education | 2025 |