| POP Fishmongers Ltd | Wholesale & retail | 2019 |
| POP Produce Limited | Financial services | 2013 |
| POP Trading Limited | Wholesale & retail | 2013 |
| POP Varietal Development Limited | Wholesale & retail | 2013 |
| Pop's Grill Ltd | Hospitality | 2022 |
| Popa Trans Services Limited | Transport & logistics | 2025 |
| Popeyes Ltd | Hospitality | 2025 |
| Poplar Farm Estates Limited | Real estate | 2017 |
| Poppy's Coffee Bar Ltd | Hospitality | 2025 |
| Poppyfields Glinton Management Company Limited | Households | 2018 |
| Porbandar Restaurants Ltd | Hospitality | 2005 |
| Port & Starboard Music Publishing Limited | Information & communication | 2020 |
| Portess and Richardson Limited | Professional & scientific | 2012 |
| Portman Products Limited | Manufacturing | 1992 |
| Portobello Contracts Ltd | Construction | 2022 |
| Portobello Management Limited | Professional & scientific | 2020 |
| Porttou Limited | Wholesale & retail | 2025 |
| Portugal Grocers Ltd | Wholesale & retail | 2018 |
| Posh Carz Limited | Transport & logistics | 2009 |
| Posh Executive Travel Ltd | Transport & logistics | 2020 |
| Posh Gecko Limited | Information & communication | 2013 |
| Posh Hand Carwash (P'Boro) Ltd. | Other services | 2016 |
| Posh Mobile Ltd | Wholesale & retail | 2022 |
| Posh Nail Secrets Ltd | Other services | 2021 |
| Posh Property & Developments Ltd | Real estate | 2026 |
| Posh Security Ltd | Administrative & support | 2026 |
| Posh Spas Leisure Ltd | Wholesale & retail | 2010 |
| Positive Polska Ltd. | Financial services | 2016 |
| Posnett Properties Limited | Real estate | 1959 |
| Pospiech-Trans Ltd | Transport & logistics | 2016 |
| Post Genesis Limited | Information & communication | 2023 |
| POST2U Ltd | Transport & logistics | 2017 |
| Postland Group Limited | Financial services | 2018 |
| Postland Group Properties Limited | Real estate | 2019 |
| Postland Management Limited | Construction | 2010 |
| POT EN Ciel Ceramics Ltd | Construction | 2024 |
| Potato Consultants Limited | Transport & logistics | 1970 |
| Potter & Moore (Devon ) Ltd | Manufacturing | 2016 |
| Potter & Moore Innovations Limited | Manufacturing | 2003 |
| Potter & Moore PLC | Manufacturing | 1975 |
| Potters Window Cleaning Ltd | Administrative & support | 2022 |
| Potting Shed Press Limited | Information & communication | 2017 |
| Potts & Quinney Ltd | Construction | 2017 |
| Poulters Properties Ltd | Real estate | 2025 |
| Pound Snack Ltd | Hospitality | 2019 |
| Pound Store Plus Peterborough Limited | Wholesale & retail | 2025 |
| Powel South Ltd | Manufacturing | 2021 |
| Power 2 Creativity CIC | Arts & recreation | 2018 |
| Power Care Services Ltd | Health & social care | 2023 |
| Power Clean 24 Ltd | Administrative & support | 2026 |
| Power of Succession Ltd | Financial services | 2023 |
| Power Project Management Consulting Ltd | Professional & scientific | 2023 |
| Powerful Redhorse Ltd | Transport & logistics | 2022 |
| Powerhouse Ministries | Other services | 2003 |
| Powerplant Limited | Manufacturing | 2004 |
| Powers of History Limited | Education | 2024 |
| Poya Investments Ltd | Construction | 2019 |
| Poyser Print & Design Ltd | Manufacturing | 2025 |
| PP Advice & Consulting Ltd | Professional & scientific | 2021 |
| PPD Couriers Ltd | Construction | 2019 |
| Ppic Global Limited | Real estate | 2026 |
| PPM Care Limited | Construction | 2018 |
| PPS Recovery Systems Limited | Administrative & support | 1990 |
| PPV Peterborough Limited | Financial services | 2014 |
| PPV Properties Limited | Real estate | 2018 |
| PPV Solutions Ltd | Administrative & support | 2014 |
| Ppvs Europe Ltd | Administrative & support | 2025 |
| PR Boutique T/A Swanky Rags Ltd | Wholesale & retail | 2025 |
| PR Finance Partnering Limited | Professional & scientific | 2019 |
| PR Transport Ltd | Transport & logistics | 2024 |
| Practical Car and Van Rental Peterborough Ltd | Administrative & support | 2025 |
| Practical Concepts Services Ltd | Administrative & support | 2023 |
| Prado Courier Limited | Transport & logistics | 2022 |
| Praemium Solutions Limited | Financial services | 2010 |
| Prag Properties Ltd | Real estate | 2024 |
| Praggys Recovery Ltd | Wholesale & retail | 2021 |
| Pragmatic BIO Limited | Professional & scientific | 2024 |
| Pragnusha Ltd | Information & communication | 2025 |
| Prancing Lion Motorcars Limited | Wholesale & retail | 2012 |
| Prandela Limited | Health & social care | 2023 |
| Prapancha Healthcare Ltd | Wholesale & retail | 2023 |
| Prasad Healthcare Limited | Health & social care | 2018 |
| Prashanti Investments Limited | Real estate | 2025 |
| Prashiddi Limited | Hospitality | 2022 |
| Pratha Homes P Ltd | Real estate | 2023 |
| Praxis Accountants Ltd | Professional & scientific | 2014 |
| Praxis Solutions for Business Ltd | Administrative & support | 2007 |
| Prebs Properties Ltd | Real estate | 2021 |
| Preciousdax Ltd | Agriculture & fishing | 2024 |
| Precise Shredding Limited | Water & waste | 2026 |
| Precise Trades Ltd | Wholesale & retail | 2024 |
| Precision Air Solutions Ltd | Construction | 2025 |
| Precision Beemers Ltd | Manufacturing | 2025 |
| Precision Glass and Glazing Ltd | Construction | 2025 |
| Precision Healthcare Service Ltd | Health & social care | 2021 |
| Precision Hydraulics Ltd | Manufacturing | 2025 |
| Precision PDR Limited | Wholesale & retail | 2024 |
| Precision Plastics Limited | Manufacturing | 2010 |
| Precision Sales Limited | Wholesale & retail | 2019 |
| Preferred Consult Ltd | Professional & scientific | 2019 |