| Pral Holdings Limited | Financial services | 2024 |
| Pral Services Limited | Professional & scientific | 2025 |
| Pranjal Technologies Limited | Information & communication | 2012 |
| Praxis Clinical Insights Limited | Professional & scientific | 2025 |
| Praxity - Global Alliance Limited | Other services | 2011 |
| PRE Consultants Limited | Professional & scientific | 1997 |
| PRE Creative Studios Ltd | Professional & scientific | 2008 |
| Precision Solve Ltd | Wholesale & retail | 2024 |
| Precisionn Ltd | Construction | 2021 |
| Premier Goods Trading Ltd | Wholesale & retail | 2025 |
| Premier Hair and Makeup Ltd | Other services | 2025 |
| Premier Heating Commercial Epsom Ltd | Construction | 2025 |
| Premier Heating Epsom Ltd | Construction | 2020 |
| Premier Heating Services Epsom Ltd | Construction | 2023 |
| Premier Mortgage and Insurance Services Limited | Financial services | 2010 |
| Premier Properties Investments Limited | Administrative & support | 1997 |
| Premier Properties North LLP | | 2019 |
| Premier Properties South LLP | | 2019 |
| Premium Real Estate Management Ltd | Real estate | 2023 |
| Premium Safety Ltd | Administrative & support | 2015 |
| Premium Solicitors Ltd | Professional & scientific | 2022 |
| Prepared Ltd | Professional & scientific | 2022 |
| Preslin UK Ltd | Information & communication | 2023 |
| Prestige Nursing (Franchise) Limited | Administrative & support | 1996 |
| Prestige Nursing Limited | Health & social care | 1971 |
| Prestige Property Developers 2013 Ltd | Real estate | 2013 |
| Preston Interiors Ltd | Construction | 2017 |
| Price ME UP Ltd | Information & communication | 2022 |
| Price UK Limited | Information & communication | 2002 |
| Primary Aggregates Limited | Construction | 2015 |
| Prime Designs Limited | Construction | 2024 |
| Prime Doruk Ltd | Wholesale & retail | 2023 |
| Prime Estate Partners Ltd | Real estate | 2024 |
| Prime Global Publishing Ltd | Information & communication | 2024 |
| Prime Hire Solutions Limited | Construction | 2023 |
| Prime Life Capital Management Limited | Financial services | 1999 |
| Prime Plastics & Building Products Ltd | Construction | 2022 |
| Primeway Property Services Limited | Administrative & support | 2026 |
| Primo Refurbishments Ltd | Construction | 2013 |
| Print Distribution International Limited | Transport & logistics | 2004 |
| Print IT Expert Witness Services Ltd | Financial services | 2024 |
| Printworks (Oxted) Management Company Limited | Households | 2024 |
| Priory Court (Banstead) Management Company Limited | Households | 1970 |
| Priory Mews (Carshalton) Management Company Limited | Households | 1997 |
| Priory Park (Reigate) Developments Limited | Construction | 2024 |
| Priory Peak Solutions Ltd | Professional & scientific | 2024 |
| Priory Place (Abbey Wood) NO.2 RTM Company Limited | Real estate | 2013 |
| Priory Place (Abbey Wood) RTM Company Limited | Real estate | 2013 |
| Pripel Ltd | Information & communication | 2016 |
| Prism and Lens Ltd | Wholesale & retail | 2025 |
| Pristine Interior Designs Ltd | Professional & scientific | 2023 |
| Pristine Property Group Limited | Real estate | 2023 |
| Privilege Lounge Ltd | Wholesale & retail | 2023 |
| PRN Pathogenix Limited | Health & social care | 2025 |
| PRN Will Writing Ltd | Other services | 2023 |
| Pro Chiro Limited | Health & social care | 2017 |
| Pro Global Media Limited | Information & communication | 2013 |
| Pro-Dg Design Limited | Professional & scientific | 2023 |
| Proback Clinic Ltd | Health & social care | 2020 |
| Proback Investments Ltd | Real estate | 2022 |
| Proback Limited | Wholesale & retail | 2009 |
| Prodbyalexwilmer Ltd | Information & communication | 2025 |
| Prodoc Services Limited | Professional & scientific | 2025 |
| Prodrift UK Limited | Wholesale & retail | 2015 |
| Professional Beauty Training Limited | Other services | 2015 |
| Proforr Investment Limited | Real estate | 2026 |
| Progreen Clean Limited | Administrative & support | 2025 |
| Progress Property 1 Limited | Real estate | 2025 |
| Progress Property Limited | Real estate | 2017 |
| Project Basecamp | Health & social care | 2025 |
| Proline Drytech Limited | Construction | 2023 |
| Prometheus Management Consulting Ltd | Professional & scientific | 2025 |
| Prometheus Marine Products Limited | Wholesale & retail | 2026 |
| Promo Build Ltd | Construction | 2011 |
| Promo Building Limited | Construction | 2020 |
| Promode Building Services Consultants Limited | Administrative & support | 1997 |
| Promyx Ltd | Professional & scientific | 2025 |
| Proof Building Services Ltd | Construction | 2020 |
| Proofit Website Ltd | Information & communication | 2025 |
| Prop On-Line Limited | Information & communication | 2018 |
| Properlink Ltd | Information & communication | 2024 |
| Property Development Solutions Europe Limited | Real estate | 2022 |
| Property Group Management Limited | Real estate | 2016 |
| Property Lifestyle Network Ltd | Education | 2024 |
| Property Mediation Limited | Administrative & support | 2011 |
| Property of 57 Earlswood Road Limited | Households | 2020 |
| Propertydrum Events Ltd | Information & communication | 2011 |
| Propertydrum Ltd | Information & communication | 2009 |
| Propinv Ltd | Real estate | 2014 |
| Props Flight Training Ltd | Education | 2023 |
| Proshot Media Ltd | Information & communication | 2020 |
| Prospect Place (Wimbledon) Management Company Limited | Households | 1998 |
| Prospect Two Limited | Information & communication | 2013 |
| Protectionx Limited | Health & social care | 2020 |
| Protravel 2000 Ltd | Transport & logistics | 1997 |
| Provincial Plumbing Services Limited | Other services | 2006 |
| Provincial Property Services Limited | Administrative & support | 1998 |
| Proximity Ltd | Professional & scientific | 2023 |
| Prune & Bloom Gardening Ltd | Administrative & support | 2019 |
| PS Decorators Ltd | Construction | 2018 |