| Power Special Works Limited | Construction | 2023 |
| Power Tech Projects Limited | Administrative & support | 2024 |
| Powerlink (London) Ltd | Energy | 2014 |
| Powerquest Ltd | Real estate | 2006 |
| PR Property Services Limited | Administrative & support | 2020 |
| Practical Oprisk Solutions Ltd | Administrative & support | 2018 |
| Praxis & Prose Ltd | Professional & scientific | 2024 |
| Precious Rose Ltd | Hospitality | 2024 |
| Precision Assembly Limited | Manufacturing | 2021 |
| Precision Corporate Finance Ltd | Real estate | 2023 |
| Precision Plus Advisory Ltd | Professional & scientific | 2026 |
| Predestination Limited | Financial services | 2023 |
| Premier 1 Consulting Limited | Administrative & support | 2015 |
| Premier DRY Cleaners & Launders Ltd | Other services | 2014 |
| Premier Foods (Morpeth) Ltd | Wholesale & retail | 2020 |
| Premier Holdings Corporation Limited | Financial services | 2021 |
| Premier Lodge North Ltd | Hospitality | 2019 |
| Premier Media Group Ltd | Professional & scientific | 2025 |
| Premier Medical Consulting Limited | Health & social care | 2025 |
| Premier Point UK Ltd | Professional & scientific | 2013 |
| Premier Portfolio Services Limited | Real estate | 2018 |
| Premier Property 57 Club Limited | Education | 2020 |
| Premier Property Education Limited | Administrative & support | 2015 |
| Premier Property Global Ltd | Real estate | 2018 |
| Premier Property Group Limited | Financial services | 2019 |
| Premier Property Suites Limited | Real estate | 2018 |
| Premier Property Ventures (UK) Ltd | Real estate | 2013 |
| Premier Savings Limited | Real estate | 2020 |
| Premier Tax Planning Limited | Professional & scientific | 2022 |
| Premium Detailing UK Ltd | Other services | 2026 |
| Premium Glazing Services Limited | Construction | 2010 |
| Premium Vineyard Company UK Limited | Wholesale & retail | 2014 |
| Pressione Engineering Limited | Professional & scientific | 2026 |
| Prestige Cutlery Services Ltd | Hospitality | 2025 |
| Prestige Financial Ltd | Financial services | 2023 |
| Prestige Medics Ltd | Health & social care | 2024 |
| Prestige Platinum Properties Ltd | Real estate | 2016 |
| Preston Sweets Ltd | Wholesale & retail | 2025 |
| Prettyunik Ltd | Wholesale & retail | 2016 |
| Pride Autos (UK) Limited | Wholesale & retail | 2011 |
| Primavera Financial Partners LLP | | 2006 |
| Prime Cash & Carry London Ltd | Wholesale & retail | 2023 |
| Prime Fixing Ltd | Construction | 2019 |
| Prime Global Traders Ltd | Wholesale & retail | 2016 |
| Prime London Residential Limited | Construction | 2010 |
| Prime Managed Solutions Limited | Manufacturing | 2019 |
| Prime Prestige Motors Limited | Wholesale & retail | 2026 |
| Primebell Ltd | Professional & scientific | 2023 |
| Primelux Goods Ltd | Wholesale & retail | 2025 |
| Primeplan Consulting Limited | Administrative & support | 2024 |
| Prin Street Limited | Real estate | 2022 |
| Princesses and Pirates Property LLP | | 2011 |
| Principle MEP Ltd | Professional & scientific | 2024 |
| Printickle Limited | Other services | 2021 |
| Priority Support Services Ltd | Administrative & support | 2014 |
| Pristine Facilities and Security Ltd | Administrative & support | 2019 |
| Pristine London Holdings Limited | Financial services | 2017 |
| Pristine Supported Living Ltd | Real estate | 2026 |
| Private Global Finance Limited | Administrative & support | 2015 |
| Priya Clinical Ltd | Health & social care | 2024 |
| Pro Bikes Rent Ltd | Wholesale & retail | 2023 |
| Pro Plumbing Ltd | Construction | 2006 |
| Pro-Elec South Ltd | Construction | 2023 |
| Profidec Ltd | Construction | 2020 |
| Profitcura Ltd | Information & communication | 2020 |
| Profix Roofing Services Limited | Construction | 2016 |
| Progmatic Ltd | Information & communication | 2016 |
| Progressive BIZ Solutions Ltd | Professional & scientific | 2013 |
| Project Splashy CIC | Education | 2025 |
| Project X Race Engineering Limited | Professional & scientific | 2013 |
| Projekt Maverick Ltd | Other services | 2016 |
| Promax Padel Ltd | Construction | 2025 |
| Proper T Estates Ltd | Real estate | 2025 |
| Property Link Assets Ltd | Real estate | 2023 |
| Property on the Move Limited | Administrative & support | 2018 |
| Property Reinstatement Valuations Limited | Professional & scientific | 2023 |
| Property Rescue (UK) Limited | Extraterritorial | 2012 |
| Property Rescue Holdco Limited | Financial services | 2018 |
| Property Rescue Home Buyers Limited | Extraterritorial | 2014 |
| Property Rescue Limited | Real estate | 2005 |
| Prosage Construction Limited | Construction | 2014 |
| Prosage Dampproofing Limited | Professional & scientific | 2016 |
| Proskiro Ltd | Information & communication | 2025 |
| Prosper Services Ltd | Construction | 2024 |
| Prosperous Real Estate Ltd | Real estate | 2026 |
| Prosync Solutions LLP | | 2012 |
| Protegy Consulting Ltd | Professional & scientific | 2012 |
| Protek Fire Solutions Limited | Professional & scientific | 2023 |
| Prothopic Limited | Information & communication | 2026 |
| Protoporos Ltd | Information & communication | 2019 |
| Proud Heritage of London Ltd | Administrative & support | 2025 |
| Provisions Initiative Limited | Hospitality | 2020 |
| PRS Enterprises Ltd | Real estate | 2025 |
| PSB Building and Carpentry Limited | Construction | 2022 |
| PSB Properties (UK) Ltd | Real estate | 2003 |
| Psisec Limited | Administrative & support | 2023 |
| PSM Estates Limited | Real estate | 2019 |
| PT Real Estate Ltd | Real estate | 2025 |
| PT Science Academy Ltd | Education | 2025 |
| Ptca Consulting Limited | Administrative & support | 2014 |