| Premald Care Ltd | Administrative & support | 2020 |
| Premald Homes Ltd | Hospitality | 2020 |
| Premierbiz Consulting (UK) Limited | Administrative & support | 2009 |
| Premiere Motors Ltd | Wholesale & retail | 2014 |
| Premises Estates Limited | Real estate | 2023 |
| Premium Prosecco Ltd | Wholesale & retail | 2025 |
| Preseli Forage Ltd | Real estate | 2021 |
| Press on (Essex) Limited | Other services | 2024 |
| Prestige Jobs Ltd | Manufacturing | 2025 |
| Prestige Personal Care Limited | Manufacturing | 2016 |
| Prestige Property Worldwide Limited | Real estate | 2014 |
| Prestige Roofing & Maintenance Ltd. | Construction | 2018 |
| Prestige Worldwide Estates Ltd | Real estate | 2019 |
| Preston Motors Limited | Administrative & support | 2008 |
| Pretty Invested Ltd | Other services | 2016 |
| Pretty Practical Things Ltd | Manufacturing | 2018 |
| Prevu London Limited | Wholesale & retail | 2015 |
| Priest Lane Investments Ltd | Other services | 2020 |
| Priime Solutions Ltd | Health & social care | 2022 |
| Prima (London) Ltd | Construction | 2022 |
| Prima (Southern) Limited | Construction | 2022 |
| Prima Consulting Limited | Professional & scientific | 2022 |
| Primasys Ltd | Information & communication | 2010 |
| Prime Air Global Limited | Administrative & support | 2007 |
| Prime Builder Solutions Ltd | Other services | 2026 |
| Prime Imaging Solutions Ltd | Health & social care | 2023 |
| Prime Property (Essex) Ltd | Real estate | 2017 |
| Prime Property Rentals Ltd | Real estate | 2018 |
| Primeblue R&D Services Ltd | Administrative & support | 2020 |
| Primefresh Hub Ltd | Wholesale & retail | 2025 |
| Primestay Cleaning Co Ltd | Administrative & support | 2026 |
| Primex Media Limited | Professional & scientific | 2010 |
| Primo Management Limited | Professional & scientific | 2010 |
| Print Procurement Professionals Limited | Manufacturing | 2016 |
| Prior Family Property Ltd | Real estate | 2024 |
| Prism Screen Print Limited | Administrative & support | 2016 |
| Prism Unified Communications Ltd | Wholesale & retail | 2024 |
| Pristinefitsuk Ltd | Wholesale & retail | 2023 |
| Private Clients Underwriting Limited | Financial services | 2006 |
| Private Hospitality Limited | Hospitality | 2020 |
| Prive Concierge Services Ltd | Real estate | 2014 |
| PRK RAD Ltd | Public administration | 2023 |
| Prnt IT Ltd | Manufacturing | 2019 |
| Pro Blend Smart Repairs Ltd | Wholesale & retail | 2019 |
| Pro Landscapes (Essex) Limited | Administrative & support | 2019 |
| Pro Lovell Ltd | Education | 2019 |
| Pro LX Sportswear Ltd | Wholesale & retail | 2025 |
| Pro-Solve Services Limited | Professional & scientific | 2004 |
| Probike Training School Ltd | Other services | 2005 |
| Probuild England Limited | Construction | 2020 |
| Prochainmatrix Ltd | Information & communication | 2010 |
| Procraft Constructions Limited | Construction | 2025 |
| Product of Environment Ltd | Education | 2025 |
| Produx Construction Limited | Construction | 2025 |
| Proelium Audio Limited | Information & communication | 2024 |
| Professional Print Finishing Services Limited | Manufacturing | 2000 |
| Professional Serv Ltd | Health & social care | 2026 |
| Proficient Holdings Limited | Financial services | 2007 |
| Profin Cost Solutions (Holdings) Ltd | Financial services | 2022 |
| Profin Cost Solutions Ltd | Professional & scientific | 2010 |
| Progressa Ltd | Professional & scientific | 2023 |
| Progressive Compliance Solutions Limited | Professional & scientific | 2018 |
| Progrid Holdings Limited | Financial services | 2025 |
| Progrid Limited | Construction | 2021 |
| Project and Construction Services Ltd | Construction | 2013 |
| Project Bespoke Limited | Manufacturing | 2021 |
| Project Boosters Ltd | Professional & scientific | 2012 |
| Project Holding Group Ltd | Construction | 2023 |
| Project Resource Requirements Ltd | Administrative & support | 2019 |
| Projectile Education Ltd | Education | 2023 |
| Proleap Consulting Limited | Professional & scientific | 2025 |
| Prolific Construction Limited | Construction | 2014 |
| Promen Health Ltd | Health & social care | 2022 |
| Promotional Gifts Direct Limited | Wholesale & retail | 2020 |
| Pronto Direct Limited | Wholesale & retail | 2015 |
| Propam Limited | Other services | 2010 |
| Proper Punch Caribbean Ltd | Manufacturing | 2026 |
| Properpr Limited | Professional & scientific | 2018 |
| Property & Finance Deals Ltd | Hospitality | 2003 |
| Property and Equity Ltd | Real estate | 2017 |
| Property Fresh Ltd | Construction | 2019 |
| Property Land Transactions Ltd | Real estate | 2025 |
| Property Liaisons of London Limited | Real estate | 1993 |
| Property Wave Limited | Real estate | 2024 |
| Proplant Hire Services Limited | Administrative & support | 2016 |
| Proplant Scaffolding Limited | Construction | 1986 |
| Propress Equine Ltd | Extraterritorial | 2009 |
| Propress Limited | Other services | 1980 |
| Propress Steamers Limited | Extraterritorial | 1984 |
| Prose Publications Ltd | Information & communication | 2026 |
| Prospect Rental Limited | Real estate | 2024 |
| Prospect Site Services Limited | Construction | 2017 |
| Protatech Limited | Manufacturing | 2007 |
| Protean Consultants Limited | Administrative & support | 2017 |
| Protectavan Solutions Limited | Administrative & support | 2012 |
| Protegritas Limited | Professional & scientific | 2019 |
| Provence Maison Ltd | Real estate | 2017 |
| Provilan UK Limited | Extraterritorial | 2017 |
| PRU Kayz Ltd | Health & social care | 2014 |
| Prãna Wellbeing CIC | Education | 2026 |