| PI Health Solutions Ltd | Health & social care | 2025 |
| Pickwick Motor Co. Limited | Wholesale & retail | 1982 |
| PIE Digital Accounts Limited | Professional & scientific | 2018 |
| Piece of Wellness Community Interest Company | Health & social care | 2025 |
| Piesley Properties Ltd | Real estate | 2025 |
| Pilgrim Construction Solutions Ltd | Construction | 2021 |
| PIN Global Invest Limited | Wholesale & retail | 2025 |
| Pinas Express Balikbayan Ltd | Transport & logistics | 2022 |
| Pineapple Education Ltd | Education | 2024 |
| Pinewood Designs Limited | Manufacturing | 2020 |
| Pinnacle Movers & Storage Ltd | Transport & logistics | 2021 |
| Pinnacle Movers Ltd | Transport & logistics | 2013 |
| Pinnacle Removals & Storage Ltd | Transport & logistics | 2021 |
| Pintail IT Services Limited | Information & communication | 2022 |
| Pinvest Limited | Real estate | 2021 |
| PIO Construction Ltd | Construction | 2019 |
| Pipe Services (Fabrication) Limited | Administrative & support | 2000 |
| Pipetec Ltd | Manufacturing | 2010 |
| Piranha Alarms Ltd | Administrative & support | 2023 |
| Piterg Ltd | Transport & logistics | 2015 |
| Pivotsys Limited | Education | 2022 |
| Pixelfern Limited | Professional & scientific | 2018 |
| Pizzaria 1 Ltd | Hospitality | 2025 |
| Pjmastery Properties and Development Ltd | Real estate | 2025 |
| PJS Industrial Supplies Limited | Wholesale & retail | 1981 |
| PJS Resources Ltd | Construction | 2014 |
| Placepaints Limited | Wholesale & retail | 2022 |
| Plalite Limited | Manufacturing | 1968 |
| Plalite Properties Limited | Real estate | 2023 |
| Planet Plumbing Limited | Wholesale & retail | 2000 |
| Planning & Logic Network UK Limited | Construction | 2014 |
| Plantation Court (Iwade) Management Limited | Real estate | 2005 |
| Plate 38 Ltd | Hospitality | 2025 |
| Platesbyadz Ltd | Wholesale & retail | 2026 |
| Playbox Pre-School and Nursery Limited | Education | 2012 |
| PLC HR Services Limited | Administrative & support | 2026 |
| PLC IT Services Limited | Information & communication | 2023 |
| PLC Total Accounting Limited | Professional & scientific | 2025 |
| PLC Training & Mentoring Academy Ltd | Education | 2025 |
| PLR Advisory Limited | Professional & scientific | 2022 |
| Plum-Transport Ltd | Transport & logistics | 2020 |
| Plumbest Ltd | Construction | 2024 |
| PMC Contracting (UK) Limited | Construction | 2018 |
| PMC UK Propco Ltd | Real estate | 2026 |
| Pmzielonka Ltd | Transport & logistics | 2025 |
| Pointers Antiques Ltd | Wholesale & retail | 2020 |
| Pokufirst Services Ltd | Administrative & support | 2018 |
| Pologk Ltd | Transport & logistics | 2023 |
| Poly-Tek Ltd | Manufacturing | 2002 |
| Pomani Ltd | Manufacturing | 2017 |
| Pooles Building and Decorating Ltd | Construction | 2016 |
| Poor MAN Super Car Ltd | Wholesale & retail | 2025 |
| Poppy Fields, Charing Residents Management Company Limited | Households | 2014 |
| Popular Tyres Limited | Wholesale & retail | 2018 |
| Porcelain Audio Limited | Professional & scientific | 2015 |
| Positively Useful Ltd | Professional & scientific | 2012 |
| Potyo Trans Ltd | Transport & logistics | 2024 |
| Powakaddy International Limited | Manufacturing | 2011 |
| Power AI Limited | Construction | 2019 |
| Powered by Cocoa Ltd | Manufacturing | 2021 |
| PPO Transport Ltd | Transport & logistics | 2025 |
| Praeter Community Services CIC | Health & social care | 2026 |
| Precept 9MP Limited | Real estate | 2004 |
| Precept CS Limited | Real estate | 2010 |
| Precept Group Limited | Professional & scientific | 2003 |
| Precept Property Management Limited | Real estate | 2004 |
| Precept Services Limited | Real estate | 2004 |
| Precision (Holdings) Limited | Manufacturing | 1999 |
| Precision (Powders) Limited | Manufacturing | 2023 |
| Precision Analysis (North West) Limited | Professional & scientific | 1995 |
| Precision Automation Group Limited | Extraterritorial | 2020 |
| Precision Engineering (Medway) Limited | Manufacturing | 1961 |
| Precision Locomotive Developments Limited | Wholesale & retail | 2024 |
| Precision Motor Traders Ltd | Wholesale & retail | 2023 |
| Precision Pipe Sevices Ltd | Manufacturing | 2012 |
| Premier Offers Direct Limited | Wholesale & retail | 1993 |
| Premier Timber Limited | Construction | 2002 |
| Premiere Car Sales Limited | Wholesale & retail | 2025 |
| Premium Home Improvements Limited | Construction | 2025 |
| Prendon Electrical Services Ltd | Construction | 2016 |
| Prendon Panels Ltd | Wholesale & retail | 2014 |
| Preserve Vision Limited | Health & social care | 2026 |
| Prestige Beauty (Kent) Ltd | Other services | 2014 |
| Prestige Graphics Limited | Wholesale & retail | 2016 |
| Prestige Hair (Kent) Ltd | Other services | 2013 |
| Prestigious Care Ltd | Health & social care | 2014 |
| Price Engineered Solutions Ltd | Manufacturing | 2018 |
| Price Exteriors Limited | Construction | 2023 |
| Pricelink Ltd | Wholesale & retail | 2020 |
| Prima Building Services Ltd | Construction | 2023 |
| Primate Group Limited | Agriculture & fishing | 2023 |
| Prime IFA Ltd | Administrative & support | 2016 |
| Prime Industries Ltd | Professional & scientific | 2025 |
| Primebound Ltd | Real estate | 2025 |
| Print Works (Kent) Ltd | Manufacturing | 2022 |
| Printer Pros UK Ltd | Manufacturing | 2020 |
| Priority Environmental Services Ltd | Professional & scientific | 2010 |
| Prishelski Ltd | Transport & logistics | 2022 |
| Prism Building Services Limited | Construction | 2000 |
| Prism Care Ltd | Administrative & support | 2007 |