| Pollard 17 to 27A Limited | Real estate | 2016 |
| Polly Care Services Limited | Health & social care | 2019 |
| Polonic Gheorghe Ltd | Construction | 2016 |
| Pool Platforms Holdings Limited | Wholesale & retail | 2019 |
| Pool Platforms Limited | Wholesale & retail | 2012 |
| Porcini Pizza Ltd | Hospitality | 2025 |
| Portabar Limited | Administrative & support | 2004 |
| Portlandnpals Ltd | Arts & recreation | 2023 |
| Ports Limited | Real estate | 2020 |
| Portugal Ventures Ltd | Real estate | 2018 |
| Positive Contact Ltd | Construction | 2018 |
| Possibly Platinum Ltd | Professional & scientific | 2025 |
| Potent Healthcare Limited | Health & social care | 2022 |
| Pound Plus Home Store Ltd | Wholesale & retail | 2026 |
| PP Brothers Ltd | Wholesale & retail | 2025 |
| PPR Investments Limited | Real estate | 2008 |
| PQ Building Limited | Construction | 2014 |
| Pracha Ltd | Manufacturing | 2023 |
| Prag Construction Ltd | Construction | 2019 |
| Pratt, Levick and Company Limited | Extraterritorial | 1935 |
| Preet London UK Ltd | Wholesale & retail | 2023 |
| Preferred Home Care Services Limited | Health & social care | 2016 |
| Preleap Digital Ltd | Professional & scientific | 2026 |
| Prem Digital Ltd | Professional & scientific | 2025 |
| Premier Spaces Limited | Construction | 2020 |
| Premier Transports Ltd | Transport & logistics | 2021 |
| Premiercaree Ltd | Health & social care | 2022 |
| Premium Carer Ltd | Health & social care | 2025 |
| Premium Florist Ltd | Wholesale & retail | 2025 |
| Premium Paper Limited | Wholesale & retail | 2026 |
| Premium Security Ltd | Administrative & support | 2022 |
| Premiux UK Ltd | Wholesale & retail | 2024 |
| Prestige Peak Ltd | Wholesale & retail | 2024 |
| Prestige Reliable Cleaners Limited | Other services | 2019 |
| Prestige RGA Ltd | Education | 2023 |
| Prestigious Events Ltd | Other services | 2024 |
| Prestigious Home Care Services Ltd | Health & social care | 2024 |
| Preuveneers Property Limited | Real estate | 2022 |
| Price Right Ltd | Administrative & support | 2025 |
| Prime Care Facilities Management Ltd | Administrative & support | 2024 |
| Prime Facility Cleaning Limited | Administrative & support | 2026 |
| Prime Fulfilment Limited | Transport & logistics | 2026 |
| Prime Haven Holdings Ltd | Real estate | 2025 |
| Prime Horizon Healthcare Ltd | Health & social care | 2025 |
| Prime Kickboxing & Muay Thai Ltd | Arts & recreation | 2026 |
| Prime Point Homes Ltd | Real estate | 2025 |
| Prime Realty Group Limited | Real estate | 2024 |
| Prime Warehousing Ltd | Real estate | 2025 |
| Primenest Market Limited | Wholesale & retail | 2026 |
| Primeshield Property Services Ltd | Real estate | 2026 |
| Primezone Global Ltd | Wholesale & retail | 2022 |
| Primol Limited | Wholesale & retail | 2026 |
| Printify Limited | Manufacturing | 2017 |
| Prism Air Conditioning Limited | Construction | 2003 |
| Prism FM Services Ltd | Energy | 2015 |
| Prism IT Limited | Information & communication | 2023 |
| Pristine Plaster Mouldings Ltd | Manufacturing | 2025 |
| Priththi Ltd | Construction | 2021 |
| Pro Rescue and Recovery Ltd | Transport & logistics | 2024 |
| Proclaim Projects Limited Limited | Professional & scientific | 2017 |
| Procurement Services Consulting Ltd | Professional & scientific | 2024 |
| Product 9 Ltd | Wholesale & retail | 2025 |
| Products Magic Ltd | Wholesale & retail | 2025 |
| Proeffect Sprayforce Limited | Construction | 2024 |
| Proficient Installation Limited | Construction | 2015 |
| Profill Leisure (UK) Limited | Transport & logistics | 1999 |
| Profix Advisory Ltd | Professional & scientific | 2015 |
| Project Connex Ltd | Construction | 2023 |
| Project Design and Management Consultancy Limited | Professional & scientific | 1996 |
| Project Services Consultancy-Uk Ltd | Real estate | 2019 |
| Promised Holdings Limited | Real estate | 2021 |
| Promised Land Holdings Ltd | Wholesale & retail | 2025 |
| Property AID Services Ltd | Real estate | 2018 |
| Property Hunterz Ltd | Real estate | 2021 |
| Property Point Maintenance Limited | Real estate | 2024 |
| Propertyfolio Limited | Other services | 2013 |
| Propertyze Ltd | Real estate | 2024 |
| Prophive Ltd | Real estate | 2025 |
| Propunited Alpha Limited | Real estate | 2026 |
| Propunited Ltd | Real estate | 2025 |
| Propure Design Ltd | Construction | 2016 |
| Prostaff Tennis Ltd | Arts & recreation | 2014 |
| PS Truck & Car Parts Ltd | Wholesale & retail | 2016 |
| PSM Electrical Limited | Construction | 2016 |
| PST Installations Limited | Construction | 2022 |
| PSV Electro-Technic Ltd | Wholesale & retail | 2024 |
| Publish Your Way Ltd | Information & communication | 2025 |
| Pulse Lasers and Effects Ltd | Administrative & support | 2024 |
| Pulse Rate Ltd | Education | 2024 |
| Pulse Social Limited | Professional & scientific | 2022 |
| Pulse Wade Tech Soloutions Ltd | Professional & scientific | 2018 |
| Pulsecraft Ltd | Wholesale & retail | 2024 |
| Pure Aurora Ltd | Manufacturing | 2017 |
| Pure Bora Ltd | Wholesale & retail | 2026 |
| Pure Rank Digital Ltd | Information & communication | 2024 |
| Pure Satizfaktion Family Catering Services Limited | Hospitality | 2025 |
| Pure Touch Services Ltd | Administrative & support | 2025 |
| Purple Brick Property Management Ltd | Households | 2023 |
| Purple Install Limited | Manufacturing | 2001 |
| PW Electric Ltd | Construction | 2025 |