| Pro Experts Ltd | Wholesale & retail | 2026 |
| Pro JM Builders Ltd | Construction | 2016 |
| Pro Pack Solutions Limited | Administrative & support | 2025 |
| Pro Paintworks Ltd | Wholesale & retail | 2021 |
| Pro Plant & Haulage Ltd | Transport & logistics | 2025 |
| Pro Plus Digital Ltd | Professional & scientific | 2024 |
| Pro Plus Services Ltd | Other services | 2020 |
| Pro Staffing Locums Limited | Professional & scientific | 2020 |
| Pro Steel Solutions Ltd | Manufacturing | 2024 |
| Pro-Active Wellness Centres Ltd | Arts & recreation | 2012 |
| Pro-Grip Tyres Ltd | Wholesale & retail | 2015 |
| Pro.Rig (Production Rigging Services) Ltd | Arts & recreation | 2023 |
| Proactive Property Investments Limited | Financial services | 2022 |
| Proactive VA Solutions Ltd | Administrative & support | 2023 |
| Probooks Software Limited | Information & communication | 2025 |
| Procare Pharma Limited | Wholesale & retail | 2012 |
| PROCARE365 Ltd | Health & social care | 2021 |
| Prodeva International Limited | Administrative & support | 2014 |
| Prodigal Sun Ltd | Information & communication | 2017 |
| Prodigital Technology Limited | Professional & scientific | 2024 |
| Product Story Ltd | Information & communication | 2014 |
| PRODUCT4U Ltd | Wholesale & retail | 2021 |
| Productive Care Ltd | Health & social care | 2015 |
| Proedge Ltd | Information & communication | 2021 |
| Professional Careers Academy Ltd | Education | 2024 |
| Professional Electrical Improvers Training Ltd | Education | 2023 |
| Professional Granite Ltd | Manufacturing | 2021 |
| Professional Life Care Ltd | Health & social care | 2022 |
| Professional Secretarial Solutions Limited | Administrative & support | 2016 |
| Professional Skin Limited | Professional & scientific | 2012 |
| Professionals IT Zone Limited | Information & communication | 2015 |
| Proficient Enterprise Ltd | Wholesale & retail | 2026 |
| Profinance AAS Ltd | Information & communication | 2026 |
| Profis-Uk Limited | Wholesale & retail | 2025 |
| Profit Pulse Limited | Professional & scientific | 2026 |
| Profitables and Blissfull Ltd | Wholesale & retail | 2025 |
| Profitra Ltd | Wholesale & retail | 2025 |
| Progoti Ltd | Other services | 2024 |
| Program Group Ltd | Wholesale & retail | 2022 |
| Progression School of Motoring Ltd | Education | 2015 |
| Progressive Design Solutions Limited | Construction | 2008 |
| Progressive Grounds Limited | Professional & scientific | 2013 |
| Progressive Services Ltd | Real estate | 2023 |
| Prohr Consulting Limited | Administrative & support | 2024 |
| Proinf UK Limited | Information & communication | 2016 |
| Project 4 Youth Empowerment CIC | Administrative & support | 2019 |
| Project Purple Bidco Limited | Financial services | 2024 |
| Project Purple Topco Limited | Financial services | 2024 |
| Project Three Consulting Limited | Administrative & support | 2006 |
| Project Trinity Ltd | Real estate | 2026 |
| Project Vale Ltd | Wholesale & retail | 2026 |
| PROJECT2PROJECT Limited | Professional & scientific | 2023 |
| Projectgrassroots UP Ltd | Information & communication | 2026 |
| Prolaser Cleaning Ltd | Construction | 2025 |
| Prolermo Ltd | Real estate | 2024 |
| Prolexia Tuition CIC | Education | 2024 |
| Prolific People Solutions Ltd | Administrative & support | 2020 |
| Promax Roofing & Property Maintenance Ltd | Construction | 2026 |
| Promethean Consultancy Limited | Information & communication | 2022 |
| Promise Chidera Ltd | Health & social care | 2024 |
| Promo & Provision Ltd | Professional & scientific | 2024 |
| Prompt Letting Properties Ltd | Real estate | 2022 |
| Prompt Lettings Limited | Real estate | 2017 |
| Promptrank Ltd | Wholesale & retail | 2026 |
| Prono Ltd | Construction | 2016 |
| Prop Giant Events Ltd | Arts & recreation | 2022 |
| Proper Kitchen Renewals Ltd | Construction | 2026 |
| Properties by Sagz Ltd | Real estate | 2025 |
| Properties in the Sun Limited | Construction | 2012 |
| Properties of Kent Ltd | Real estate | 2024 |
| PROPERTIES2M Ltd | Real estate | 2026 |
| Property and Asset Finance Ltd | Financial services | 2015 |
| Property Foundry Limited | Professional & scientific | 2026 |
| Property House Buyers Ltd | Households | 2017 |
| Property Ikon Ltd | Real estate | 2020 |
| Property Junky Ltd | Real estate | 2022 |
| Property Legends Ltd | Construction | 2025 |
| Property Maintenance London (VR) Limited | Construction | 2020 |
| Property Management Kent Ltd | Real estate | 2025 |
| Property MFI Investment Ltd | Financial services | 2025 |
| Property Rental London Ltd | Real estate | 2022 |
| Property Repair Limited | Construction | 2021 |
| Property Shares Associates Ltd | Construction | 2018 |
| Property Stretch Limited | Construction | 2014 |
| Property Stretch London Limited | Construction | 2020 |
| Propertycontinental Limited | Real estate | 2014 |
| Propertyinvest Limited | Real estate | 2003 |
| Propertys Channel Limited | Real estate | 2018 |
| Prophetic Resurrection Ministry International | Other services | 2005 |
| Proppytics Ltd | Professional & scientific | 2024 |
| Propserve Group Ltd | Other services | 2023 |
| Prosolve Associates Limited | Professional & scientific | 2025 |
| Prospect Care Plus Ltd | Health & social care | 2020 |
| Prospective Paraplanning Ltd | Financial services | 2018 |
| Prospereruus Ltd | Wholesale & retail | 2025 |
| Prospernest Ltd | Real estate | 2025 |
| Prosplug Limited | Wholesale & retail | 2024 |
| Protech (UK) Limited | Manufacturing | 2011 |
| Protechnical Environmental Services Ltd | Professional & scientific | 2022 |
| Protechnical Services Limited | Professional & scientific | 2002 |