| Party Save Smile Limited | Wholesale & retail | 2017 |
| PAS Project Support Limited | Other services | 2021 |
| Pathfinder Training Limited | Professional & scientific | 2026 |
| Patnikmar Limited | Health & social care | 2018 |
| Patterns Transport Limited | Transport & logistics | 1993 |
| Paul Godfrey Roofing Ltd | Construction | 2016 |
| Paul Lakey Agricultural Contractor Limited | Agriculture & fishing | 2006 |
| Paul Mason Autospray (Lotus) Ltd | Wholesale & retail | 2024 |
| Paul Mason Autospray Ltd | Wholesale & retail | 2012 |
| Paul Mason F.B.H.I. Ltd | Extraterritorial | 2003 |
| Paul Rusted Ltd | Professional & scientific | 2022 |
| Paul Sweeney Agronomy Limited | Agriculture & fishing | 1997 |
| Paul TAP Trans Ltd | Transport & logistics | 2015 |
| Pauls Carpets (Holbeach) Ltd | Households | 2014 |
| PAV Truck Ltd | Transport & logistics | 2018 |
| Pavesett Ltd | Administrative & support | 2023 |
| Pavlodij Driver Hire Limited | Transport & logistics | 2011 |
| PAW3M Ltd | Transport & logistics | 2024 |
| Pawel Brej Transport Ltd | Transport & logistics | 2013 |
| Pawel Kliza Service Ltd | Transport & logistics | 2014 |
| Pawro Ltd | Transport & logistics | 2019 |
| Paws for Thought Global Fundraising CIC | Other services | 2022 |
| Paws With Purpose CIC | Administrative & support | 2024 |
| PB Operator Services Ltd | Construction | 2019 |
| PD Bookings Limited | Administrative & support | 2023 |
| PD Build Co (Stamford) Limited | Construction | 2026 |
| PD Stevens Motors Limited | Wholesale & retail | 2025 |
| PD Trans Ltd | Transport & logistics | 2020 |
| PDS Moulton Ltd | Construction | 2017 |
| Peacock Flats Limited | Households | 1998 |
| Peak Construction Management Ltd | Construction | 2023 |
| Peak Expeditions UK Ltd | Administrative & support | 2025 |
| Peak Hill Groundworks Limited | Administrative & support | 2009 |
| Pearce Moss Limited | Professional & scientific | 2017 |
| Pearce Wealth Management Ltd | Financial services | 2013 |
| Pearl Tree Properties Limited | Real estate | 2026 |
| Peewee Saddlery Ltd | Wholesale & retail | 2022 |
| Peloton Produce Holdings Limited | Financial services | 2020 |
| Peloton Produce Limited | Wholesale & retail | 2020 |
| Pelsal Limited | Administrative & support | 2025 |
| Peltier Electrical & Building Services Ltd | Manufacturing | 2017 |
| Pencarrow Capital Limited | Professional & scientific | 2012 |
| Penman Clockcare (UK) Limited | Wholesale & retail | 2002 |
| Penny's Hair & Beauty Lounge Ltd | Other services | 2023 |
| Penny's Sweets Ltd | Wholesale & retail | 2021 |
| Pentagon Home Improvements Ltd | Construction | 2026 |
| People, Systems and Process (PSP) Ltd | Information & communication | 2008 |
| PEP Skyline Ltd | Transport & logistics | 2025 |
| Pepperoni Pony Ltd | Hospitality | 2025 |
| Perfect Definition Microblading & Permanent Makeup Limited | Other services | 2019 |
| Perfect Gardens and Landscaping Ltd | Administrative & support | 2025 |
| Perfect Move of Spalding Ltd | Transport & logistics | 2025 |
| Perfect Supplies Tattoo & PMU Limited | Wholesale & retail | 2023 |
| Perfectly Ordinary Ltd | Real estate | 2017 |
| Pering Limited | Public administration | 2012 |
| Perla Transport Ltd | Transport & logistics | 2021 |
| Perrin Energy Ltd | Administrative & support | 2014 |
| Peter C. Thorold Limited | Agriculture & fishing | 1999 |
| Peter Lind & Company (Anglia) Limited | Wholesale & retail | 2009 |
| Peter Lind Homes Limited | Administrative & support | 2014 |
| Peterbill Limited | Transport & logistics | 2024 |
| Peterborough & District Junior Alliance League Ltd | Arts & recreation | 2024 |
| Petite Industries Limited | Arts & recreation | 2019 |
| Petri Transport Ltd | Transport & logistics | 2026 |
| Petrisor Limited | Transport & logistics | 2015 |
| Petronum Ltd | Transport & logistics | 2024 |
| Pets Pantry Limited | Wholesale & retail | 2012 |
| PG Rogala Truck Service Ltd | Transport & logistics | 2024 |
| PG Trans 92 Ltd | Transport & logistics | 2020 |
| PH Trucks and Commercial Ltd | Wholesale & retail | 2026 |
| Pharmawrite Limited | Professional & scientific | 2004 |
| PHC Accountancy Service Ltd | Professional & scientific | 2017 |
| Philip G Wright Excavations Limited | Construction | 2010 |
| Phoenix (Cambs) Ltd | Construction | 2019 |
| Phoenix Chinese Takeaway Ltd | Hospitality | 2026 |
| Phoenix Clearouts Ltd | Administrative & support | 2026 |
| Phoenix Drivers Limited | Administrative & support | 2003 |
| Phone's 4 Everyone Ltd | Wholesale & retail | 2012 |
| Phonix Properties Ltd | Real estate | 2023 |
| Photo Art Poacher Pictures Ltd | Professional & scientific | 2025 |
| Physiotherapy & Case Management Services Limited | Health & social care | 2003 |
| Pickfords Heavy Haulage Limited | Transport & logistics | 2007 |
| Picosoft Consultancy Limited | Information & communication | 2012 |
| Pielak Transport Ltd | Transport & logistics | 2015 |
| Pilgrim Flower Bulbs Limited | Wholesale & retail | 2022 |
| PIN Transport Limited | Transport & logistics | 2016 |
| Pinchbeck Car Wash Ltd | Wholesale & retail | 2022 |
| Pinchbeck Decorators Property Improvements Ltd | Construction | 2016 |
| Pinchbeck UTD Ltd | Education | 2024 |
| Pinchstone Accounting Services Ltd | Professional & scientific | 2023 |
| Pinder Gate Management Ltd | Households | 2025 |
| Pinder Properties Ltd | Construction | 2023 |
| Pine Tree Care & Landscapes Ltd | Construction | 2018 |
| Pinetree Care Ltd | Administrative & support | 2023 |
| Pink Desserts Limited | Hospitality | 2022 |
| Pinkswan Limited | Construction | 2007 |
| Pinnacle Iceberg Limited | Professional & scientific | 2020 |
| Pinnacle Roofing & Landscapes Ltd | Construction | 2024 |
| Piokarla Ltd | Transport & logistics | 2022 |
| Pioneer Roofing and Building (Midlands) Ltd | Construction | 2019 |