| Project Management Manchester Ltd | Professional & scientific | 2018 |
| Project Mint Limited | Real estate | 2023 |
| Project Nile (Derby) Ltd | Education | 2020 |
| Project Rebelution Bidco Limited | Financial services | 2022 |
| Project Rebelution Midco 1 Limited | Financial services | 2022 |
| Project Rebelution Midco 2 Limited | Financial services | 2022 |
| Project Rebelution Topco Limited | Financial services | 2022 |
| Project REM Limited | Professional & scientific | 2012 |
| Project Support Bubble Ltd | Other services | 2021 |
| Projects Inspection Limited | Professional & scientific | 2005 |
| Projix Ltd | Information & communication | 2021 |
| Prom Ready Ltd | Wholesale & retail | 2025 |
| Promach 3D Limited | Manufacturing | 2004 |
| Promeds Clinic Limited | Health & social care | 2024 |
| Promenade Retail Limited | Construction | 2024 |
| Prometheus Strength Ltd | Manufacturing | 2019 |
| Promex Limited | Manufacturing | 2005 |
| Promises for YOU Ltd | Health & social care | 2019 |
| Promkmshopfitters Ltd | Manufacturing | 2023 |
| Pronta Moda (UK) Ltd | Wholesale & retail | 1995 |
| Prooftek Limited | Information & communication | 2015 |
| Proofworks Ltd | Information & communication | 2026 |
| Propel (UK) Limited | Professional & scientific | 2007 |
| Proper Kitchens Ltd | Hospitality | 2023 |
| Proper Roof Commercial Ltd | Construction | 2023 |
| Proper Roof Ltd | Construction | 2022 |
| Properties 4 the Future Ltd | Real estate | 2017 |
| Properties by O & G Ltd | Real estate | 2023 |
| Properties by R & R Ltd | Construction | 2024 |
| Properties Project Managements Ltd | Households | 2021 |
| Properties With Heart - Liverpool Ltd | Real estate | 2019 |
| Properties With Heart Group Ltd | Real estate | 2020 |
| Properties With Heart Ltd | Real estate | 2017 |
| Property & Facilities Solutions Ltd | Professional & scientific | 2014 |
| Property & Housing Developments Limited | Real estate | 2017 |
| Property 323 Limited | Real estate | 2023 |
| Property Bunny Ltd | Real estate | 2025 |
| Property Club (Derby) Limited | Real estate | 2021 |
| Property Dimensions Ltd | Real estate | 2022 |
| Property Duck Limited | Real estate | 2019 |
| Property Fifty Five Ltd | Real estate | 2021 |
| Property First Holdings Ltd | Real estate | 2025 |
| Property Jungle Limited | Information & communication | 2004 |
| Property Logic Ltd. | Information & communication | 2009 |
| Property Masterplan Limited | Real estate | 2018 |
| Property Mate Limited | | 2002 |
| Property One TEN Ltd | Real estate | 2021 |
| Property Repair Guys Limited | Construction | 2024 |
| Property Solutions (Derby) Limited | Real estate | 2024 |
| Property Space Enterprise Ltd | Real estate | 2020 |
| Property Team Midlands Ltd | Construction | 2025 |
| Property Transformation Team Limited | Construction | 2024 |
| Property Yielders Ltd | Real estate | 2025 |
| Propertyqa Limited | Real estate | 2025 |
| Propervesty Ventures Limited | Real estate | 2024 |
| Prophet Guests Ltd | Administrative & support | 2026 |
| Proposito Limited | Professional & scientific | 2021 |
| Proprium Properties Limited | Real estate | 2012 |
| Proshift Technologies Limited | Manufacturing | 2005 |
| Prosoma Ltd | Health & social care | 2016 |
| Prospera Investment Partners Limited | Real estate | 2024 |
| Prospera Operations Management Limited | Real estate | 2024 |
| Prosperity Property Group Limited | Real estate | 2020 |
| Prospherco Ltd | Professional & scientific | 2026 |
| Proteamwear UK Limited | Wholesale & retail | 2008 |
| Protech Wasp & Pest Control Services Limited | Other services | 2025 |
| Protect for Life Limited | Financial services | 2012 |
| Protegimus Security Ltd | Administrative & support | 2007 |
| Protegimus Tactical Ltd | Wholesale & retail | 2021 |
| Protein House (Derby) Ltd | Manufacturing | 2017 |
| Protend Healthcare Limited | Health & social care | 2023 |
| Protopia Open Innovations Ltd | Professional & scientific | 2016 |
| Protrade Ltd | Wholesale & retail | 2005 |
| Provenance AI Ltd | Information & communication | 2025 |
| Provenance Produce UK Limited | Manufacturing | 2015 |
| Provestor Accounts Ltd | Professional & scientific | 2016 |
| Provice Ltd | Information & communication | 2012 |
| Providence Consulting Services Group Limited | Professional & scientific | 2024 |
| Provident Concepts Limited | Wholesale & retail | 2008 |
| Prozach Paving Ltd | Administrative & support | 2025 |
| Prqr Ltd | Professional & scientific | 2020 |
| PRS Painting & Decorating Service Ltd | Construction | 2017 |
| Prseries UK Limited | Arts & recreation | 2025 |
| PRV BX Ltd | Professional & scientific | 2024 |
| PRV Services Limited | Transport & logistics | 2019 |
| Prymus Logistic Ltd | Transport & logistics | 2017 |
| Przemyslaw Marciniak Ltd | Construction | 2017 |
| PS Embedded Ltd | Information & communication | 2017 |
| PS Metal Polishing Services Ltd | Professional & scientific | 2021 |
| PS MOT Station Ltd | Wholesale & retail | 2026 |
| PS Property Lettings Ltd | Real estate | 2024 |
| PS Transport 13 Ltd | Transport & logistics | 2017 |
| PSA Properties Limited | Construction | 2002 |
| PSB Gardens Ltd | Administrative & support | 2024 |
| Pseudonymous Limited | Manufacturing | 2014 |
| PSH Properties UK Limited | Professional & scientific | 2013 |
| Psjp Ltd | Real estate | 2025 |
| PSK Construction Ltd | Construction | 2019 |
| Pslas Ltd | Professional & scientific | 2015 |
| PSM Brickwork Ltd | Construction | 2006 |