| Perestroyka North Ltd | Wholesale & retail | 2019 |
| Perfect Plane Screeding Limited | Construction | 2025 |
| Perfect Retail Concept Limited | Wholesale & retail | 2007 |
| PERFECT4U Fashion Limited | Wholesale & retail | 2015 |
| Perfection Cleaning Services Northampton Ltd | Administrative & support | 2026 |
| Perfection Interior Ltd | Construction | 2026 |
| Perfection Limited | Professional & scientific | 2008 |
| Perfectly Peculiar Ltd | Manufacturing | 2022 |
| Performance Engineered Solutions (PES) Limited | Professional & scientific | 2011 |
| Performance Floors (UK) Ltd | Construction | 2018 |
| Perfume & Chai Ltd | Wholesale & retail | 2024 |
| Peri N Grill Limited | Hospitality | 2018 |
| Perisco Ltd | Education | 2024 |
| Peritus Consilia Limited | Information & communication | 2013 |
| Perkins & Barron Limited | Wholesale & retail | 1963 |
| Perkins Fresh Foods Limited | Wholesale & retail | 2008 |
| Perkulatte Limited | Manufacturing | 2014 |
| Perky PUG Ltd | Administrative & support | 2015 |
| Perle.Estates Limited | Real estate | 2022 |
| Permanent Way Limited | Information & communication | 2007 |
| Permanent Way Management Co. Ltd. | Other services | 1998 |
| Permatree Limited | Administrative & support | 2016 |
| Perpetual Crown Limited | Administrative & support | 2023 |
| Perran Close Management Ltd | Real estate | 2020 |
| Perretts Metal Recycling Limited | Wholesale & retail | 2009 |
| Perrex Group Limited | Information & communication | 2026 |
| Perrex Technical Ltd | Construction | 2020 |
| Perries Panes Ltd | Construction | 2025 |
| Perrin Fencing Solutions Limited | Administrative & support | 2012 |
| Perry Ventures Limited | Manufacturing | 1999 |
| Perrys East Midlands Limited | Wholesale & retail | 1987 |
| Pershore Gate Holdings Limited | Financial services | 2021 |
| Pershore Gate Limited | Real estate | 2021 |
| Pershore High Street Holdings Limited | Financial services | 2021 |
| Pershore Markets Holdings Limited | Financial services | 2021 |
| Pershore Markets Limited | Professional & scientific | 2012 |
| Personal Strengths Coaching Ltd | Education | 2020 |
| Personal Track Safety Ltd | Professional & scientific | 2012 |
| Personalised 4 ALL Ltd | Health & social care | 2022 |
| Personalised 4 Autism Limited | Health & social care | 2013 |
| Personalised Nutritional Therapy Limited | Other services | 2020 |
| Personalized Homecare Limited | Health & social care | 2016 |
| Personnel Certification in Non-Destructive Testing Limited | Professional & scientific | 1990 |
| Pervade Development Limited | Extraterritorial | 2009 |
| Pervade Marketing Limited | Extraterritorial | 2009 |
| Pervade Software Limited | Information & communication | 2009 |
| PEST2GO Ltd | Other services | 2022 |
| Peststoppers Ltd | Other services | 2014 |
| Pet Longevity Ltd | Wholesale & retail | 2025 |
| Pet Oral Health Limited | Wholesale & retail | 2013 |
| Petals Paradise Ltd | Wholesale & retail | 2025 |
| PETAR3113 Ltd | Wholesale & retail | 2016 |
| Pete Matheson Media Limited | Information & communication | 2019 |
| Pete Norton Photography Limited | Professional & scientific | 2002 |
| Pete's Rescue and Repairs Ltd | Wholesale & retail | 2025 |
| Peter Brown Flooring Ltd | Construction | 2026 |
| Peter Chowne the AGA Specialists Ltd | Other services | 2010 |
| Peter Electrician Ltd | Construction | 2020 |
| Peter Smith Developments Ltd | Construction | 2019 |
| Peterborough Diocese Church Schools Trust | Education | 2012 |
| Peterborough Diocese Education Trust | Education | 2013 |
| Petranova Care Ltd | Health & social care | 2019 |
| Petranx Limited | Health & social care | 2023 |
| Petre Tranexpress Ltd | Transport & logistics | 2020 |
| Petre&Narcy Limited | Construction | 2022 |
| Petrolink Systems Limited | | 1987 |
| Petron Ltd | Health & social care | 2021 |
| Petronel Lita Ltd | Transport & logistics | 2026 |
| Petru Construction Ltd | Construction | 2025 |
| Pets in the Clouds Ltd | Water & waste | 2025 |
| Pets Paradise Ltd | Wholesale & retail | 2021 |
| Pettman Building Solutions Limited | Construction | 2017 |
| Peyment Solutions Limited | Information & communication | 2009 |
| PF Design & Build Ltd | Manufacturing | 2022 |
| PF Safety Ltd | Construction | 2021 |
| PFD & JDD Topco Limited | Financial services | 2025 |
| PG Autorefinish Ltd | Wholesale & retail | 2025 |
| PG Sport Horses Ltd | Agriculture & fishing | 2020 |
| PGD Construct Ltd | Construction | 2024 |
| Pgom Services Ltd | Health & social care | 2023 |
| Pgsharman Ltd | Construction | 2024 |
| PH Flesh Collection Limited | Agriculture & fishing | 2018 |
| PH3 Property Limited | Real estate | 2023 |
| PHA Groundworks Limited | Construction | 2017 |
| Phalanx Technology Ltd | Information & communication | 2011 |
| Phame Services Limited | Professional & scientific | 2016 |
| Phantom Competitions Ltd | Arts & recreation | 2023 |
| Phantom Estate Investments Ltd | Real estate | 2023 |
| Pharie Limited | Administrative & support | 2016 |
| Pharmachic Limited | Wholesale & retail | 2020 |
| Pharmtec Ltd | Wholesale & retail | 2022 |
| Phase 1 Transport Ltd | Transport & logistics | 2011 |
| Phase 2 Catering Ltd | Hospitality | 2023 |
| Phase 5 Ltd | Wholesale & retail | 2023 |
| Phase Mechanical Projects Limited | Construction | 2011 |
| Phase Mechanical Services Limited | Construction | 2009 |
| Phazede UK Ltd | Wholesale & retail | 2021 |
| Phbb Restaurants Ltd | Hospitality | 1966 |
| PHD North West Ltd | Health & social care | 2018 |
| Pheantom Ltd | Transport & logistics | 2014 |