| Prestigious Security Ltd | Administrative & support | 2025 |
| Pretty Angels Boutique Limited | Wholesale & retail | 2010 |
| Prha Services Ltd | Hospitality | 2023 |
| Price 4 Less Ltd | Administrative & support | 2021 |
| Priced Less Ltd | Wholesale & retail | 2021 |
| Pricrown & Co. Limited | Wholesale & retail | 2025 |
| Primal Cars UK Ltd | Wholesale & retail | 2013 |
| Prime Accountancy London Limited | Professional & scientific | 2023 |
| Prime Bite Limited | Manufacturing | 2011 |
| Prime Business House Limited | Energy | 2024 |
| Prime Crest Autos Ltd | Wholesale & retail | 2026 |
| Prime Excelsior Facilities Management Ltd | Households | 2023 |
| Prime Finders Limited | Real estate | 2019 |
| Prime Line Group Ltd | Other services | 2019 |
| Prime Locums Group Ltd | Administrative & support | 2022 |
| Prime Route Freight Ltd | Transport & logistics | 2025 |
| Prime Services Ltd | Professional & scientific | 2021 |
| Prime Taxation Ltd | Professional & scientific | 2017 |
| Prime Time Deals Ltd | Wholesale & retail | 2025 |
| Prime Times Properties Limited | Real estate | 2019 |
| Prime Vast Limited | Wholesale & retail | 2025 |
| Primebiz Accounting Limited | Professional & scientific | 2018 |
| Primebuild Properties Limited | Real estate | 2021 |
| Primecrafters UK Limited | Wholesale & retail | 2024 |
| Primeprojects (Global) Ltd | Professional & scientific | 2019 |
| Primesite Security Services Ltd | Administrative & support | 2010 |
| Primose Properties Limited | Real estate | 2022 |
| Print Here Limited | Manufacturing | 2019 |
| Print Support Ltd | Manufacturing | 2019 |
| Print Today Ltd | Manufacturing | 2023 |
| Print Traders Ltd | Manufacturing | 2013 |
| Printla Ltd | Manufacturing | 2026 |
| Prio Technology Ltd | Information & communication | 2016 |
| Prism Associates Ltd. | Professional & scientific | 2025 |
| Prism Glaze Limited | Manufacturing | 2020 |
| Pristine Care Solutions Ltd | Health & social care | 2025 |
| Pristine Digital Limited | Information & communication | 2025 |
| Pristine Handlers Limited | Administrative & support | 2014 |
| Pristine Hospitality Limited | Administrative & support | 2025 |
| Pristine Motors Ltd | Other services | 2015 |
| Priswills Global Services Ltd | Real estate | 2024 |
| Pro Energy Plumbing and Heating Ltd | Construction | 2020 |
| Pro Image Studio Ltd | Arts & recreation | 2014 |
| Pro Picks Ltd | Wholesale & retail | 2024 |
| Pro Removals Team Ltd | Transport & logistics | 2016 |
| Pro Syndicate Ltd | Wholesale & retail | 2020 |
| Proactive Europe Ltd | Wholesale & retail | 2018 |
| Proballskills UK CIC | Education | 2026 |
| Probalt Limited | Professional & scientific | 2013 |
| Probashi Awamileague UK Ltd | Other services | 2026 |
| Process Projects and Qualification Services Limited | Administrative & support | 2014 |
| Prodify Digital Ltd | Wholesale & retail | 2025 |
| Product Engine Limited | Wholesale & retail | 2021 |
| Proelles Workforce Ltd | Administrative & support | 2024 |
| Professional Fixing Solutions Ltd | Construction | 2019 |
| Professional Organizing Ltd | Other services | 2026 |
| Profitwise Consultants Ltd | Professional & scientific | 2025 |
| Proflex Moves&Trades Limited | Transport & logistics | 2025 |
| Progarth UK Ltd | Wholesale & retail | 2026 |
| Progressive Safety (Suffolk) Limited | Public administration | 2021 |
| Projects Solutions Ltd | Construction | 2024 |
| Proline Studio Group Limited | Real estate | 2026 |
| Proline Vehicle Services Limited | Wholesale & retail | 2026 |
| Prolite Enterprises Ltd | Wholesale & retail | 2022 |
| Proofstore Limited | | 1980 |
| Property and Technical Services Ltd | Professional & scientific | 2022 |
| Property Compliance Barking Ltd | Construction | 2026 |
| Property Compliance East London Ltd | Construction | 2026 |
| Property Connect (London) Ltd | Real estate | 2018 |
| Property Hunters Ltd | Real estate | 2014 |
| Property Lending Conduct CIC | Information & communication | 2025 |
| Property Pro Rentals Ltd | Real estate | 2023 |
| Property Solutions 1 Limited | Real estate | 2014 |
| Property Solutions LSE Ltd | Real estate | 2019 |
| PROSERVICES4U Limited | Manufacturing | 2023 |
| Prosper Tuition Ltd | Education | 2015 |
| Prospera Global Ltd | Real estate | 2025 |
| Prosperous Live FC Ltd | Construction | 2017 |
| Prostart Ltd | Health & social care | 2012 |
| Protech Porsche Limited | Professional & scientific | 1997 |
| PROTECT5 Ltd | Transport & logistics | 2021 |
| Protectiva Ltd | Other services | 2026 |
| Provaro Limited | Wholesale & retail | 2025 |
| Providence Home Care Ltd | Other services | 2023 |
| PRP Software Ltd Ltd | Wholesale & retail | 2025 |
| PRS Construction Group Ltd | Construction | 2023 |
| Prue Construction Ltd | Construction | 2021 |
| Prunaqueren Limited | Health & social care | 2014 |
| Prymal Eco Move - MAN and Van Ltd | Transport & logistics | 2026 |
| Psalmist Ltd | Health & social care | 2024 |
| PSC London Properties Ltd | Real estate | 2023 |
| PSG Electrician Limited | Construction | 2023 |
| Pssi Ltd | Construction | 2025 |
| Pssr Cons Ltd | Wholesale & retail | 2025 |
| PTD Solutions Limited | Information & communication | 2020 |
| PTI Global Limited | Education | 2024 |
| Ptmuscles Ltd | Arts & recreation | 2024 |
| Public Health Care Ltd | Public administration | 2021 |
| Puff Bites Ltd | Hospitality | 2025 |
| Pullums Dance Academy Ltd | Arts & recreation | 2025 |