| Premier Cars Kent Limited | Transport & logistics | 2021 |
| Premier Healthcare and Education Ltd | Education | 2022 |
| Premier Kent Properties Limited | Real estate | 2006 |
| Premium Express Ltd | Wholesale & retail | 2022 |
| Premium Karting Ltd | Arts & recreation | 2018 |
| Present Value Limited | Professional & scientific | 2007 |
| Press Distribution Forum Limited | Information & communication | 2010 |
| Pressing Space Ltd | Information & communication | 2014 |
| Pressure Vacuum Level Limited | Wholesale & retail | 1993 |
| Prestige Discotheques Limited | Arts & recreation | 2015 |
| Prestige Joinery and Interiors Limited | Manufacturing | 2025 |
| Prestige Plumbing & Building Services Ltd | Construction | 2011 |
| Pretty Data Limited | Administrative & support | 2015 |
| Price & Rickerby Ltd | Professional & scientific | 2025 |
| Pricecraft Ltd | Information & communication | 2025 |
| Prida Ltd | Wholesale & retail | 2024 |
| Pride Fencing and Decking Limited | Construction | 2003 |
| Primal Runners CIC | Arts & recreation | 2016 |
| Prime Cars Kent Ltd | Transport & logistics | 2021 |
| Prime Picks Co. Ltd | Wholesale & retail | 2026 |
| Primeact Limited | Professional & scientific | 2026 |
| Primoris Consultancy Limited | Professional & scientific | 2007 |
| Principal Estates LLP | | 2014 |
| Principal Forensic Toxicology and Drugs Consultancy Ltd | Professional & scientific | 2012 |
| Pring & Frier Limited | Construction | 2012 |
| Pringle Brokers Ltd | Financial services | 2020 |
| Priority Asset Management Limited | Real estate | 2011 |
| Priority Real Estate Limited | Construction | 2011 |
| Priory (Nevill Park) Management Company Limited(The) | Real estate | 1982 |
| Pristine Paths Ltd | Transport & logistics | 2026 |
| Priston Safety Assessments Limited | Professional & scientific | 2012 |
| Pritchard Wealth Management (UK) Limited | Financial services | 2012 |
| Private Medical Insurance Brokers Ltd | Financial services | 2023 |
| Priya Kiran Ltd | Health & social care | 2012 |
| Pro Fighters MMA Ltd | Wholesale & retail | 2023 |
| Pro Kudo MMA Ltd | Arts & recreation | 2026 |
| Pro-Ir Limited | Professional & scientific | 2019 |
| Pro-Iv International Limited | Information & communication | 1981 |
| Probiometrics Limited | Health & social care | 2017 |
| Productright Ltd | Information & communication | 2015 |
| Proedgetraining Ltd | Education | 2025 |
| Profile Locations Ltd | Construction | 2018 |
| Progen-E Limited | Extraterritorial | 2007 |
| Programme Health Ltd | Professional & scientific | 2021 |
| Progres Limited | Real estate | 1994 |
| Progressive Audio Visual Limited | Wholesale & retail | 2004 |
| Progressive Investor Services Limited | Real estate | 2013 |
| Project 34 Consulting Ltd | Information & communication | 2025 |
| Project Finance Advisers Limited | Administrative & support | 2009 |
| Project Renovo Ltd | Real estate | 2025 |
| Project Sure Delivery Limited | Professional & scientific | 2021 |
| Project Wellbeing Limited | Professional & scientific | 2007 |
| Projector Design Studio Ltd | Professional & scientific | 2020 |
| Prolem Homes (Shipbourne) Ltd | Construction | 2021 |
| Prologic Solutions Ltd | Information & communication | 2011 |
| Prontaplumb Limited | Construction | 2017 |
| Propaganda Pictures Limited | Information & communication | 2012 |
| Property 46 Limited | Real estate | 2020 |
| Property Cousins Limited | Real estate | 2019 |
| Property Merchant Finance Limited | Construction | 2001 |
| Property Plastering Ltd | Construction | 2026 |
| Property Turner Limited | Real estate | 2016 |
| Propertyskills Limited | Administrative & support | 1997 |
| Prophet Brand Strategy Limited | Professional & scientific | 2002 |
| Prorite Holdings Limited | Financial services | 2025 |
| Prorite Limited | Professional & scientific | 2010 |
| Prorite Scaffolding Limited | Construction | 2014 |
| Prorufas Ltd | Wholesale & retail | 2021 |
| Protective Masks Direct Ltd | Wholesale & retail | 2012 |
| Protek Placements Limited | Administrative & support | 2016 |
| Proud to Recycle Ltd. | Administrative & support | 2022 |
| Proview Planning Ltd | Professional & scientific | 2025 |
| Provision Design Ltd | Professional & scientific | 2018 |
| Pryor Roberts LLP | | 2016 |
| PS Media Online Ltd | Information & communication | 2023 |
| PS Precision Landscaping Ltd | Administrative & support | 2020 |
| PSC Management (NI) LLP | | 2009 |
| Psifio Limited | Information & communication | 2025 |
| Psse Limited | Information & communication | 2012 |
| Psychosensory Therapies Ltd | Education | 2009 |
| Psychtrain Limited | Education | 2022 |
| Psykey Limited | Professional & scientific | 1998 |
| PT Consulting Limited | Financial services | 2025 |
| PT FD Limited | Professional & scientific | 2013 |
| PT Prestige Cars Ltd | Administrative & support | 2024 |
| Public Cloud Limited | Information & communication | 2012 |
| Public Policy Media Limited | Information & communication | 2012 |
| Puffin Insulation Limited | Construction | 2018 |
| Puffin Logistics Ltd | Information & communication | 2021 |
| Pukka Putters Ltd | Arts & recreation | 2025 |
| Pullscreen Ltd | Information & communication | 2022 |
| Pullwood Consulting Limited | Professional & scientific | 2020 |
| Pulsetech Industrial Ltd. | Professional & scientific | 2024 |
| Pure Bubble Ltd | Manufacturing | 2026 |
| Pure Sports Coaching Limited | Arts & recreation | 2014 |
| Purepup Ltd | Wholesale & retail | 2023 |
| Purple Compass Limited | Professional & scientific | 2014 |
| Purpose Consulting Limited | Professional & scientific | 2001 |
| Pushkin Antiques Ltd | Wholesale & retail | 2012 |
| Pushkin Auctioneers & Valuers Ltd | Professional & scientific | 2024 |