| Pleasant Wares Ltd | Wholesale & retail | 2024 |
| Plenti Holdings Limited | Financial services | 2023 |
| Plenti Picks Limited | Wholesale & retail | 2023 |
| Plimsoll House (Bristol) Limited | Real estate | 1971 |
| Plomer Green (Downley) Management Company Ltd | Households | 2010 |
| Plot to POT Limited | Wholesale & retail | 2013 |
| Plotify Financial (UK) Limited | Information & communication | 2018 |
| Plotter Technology Limited | Manufacturing | 1989 |
| Ploutos Assets Limited | Education | 2014 |
| Plumbing 4 U Limited | Construction | 2012 |
| Plumbing Specialists Limited | Construction | 2023 |
| Plumbmatrix Plumbers Ltd | Construction | 2020 |
| Plumbright Installations Limited | Construction | 2012 |
| Plumeria LAB Limited | Information & communication | 2023 |
| Plumhouse Residents Association Limited | Households | 1983 |
| Plumpnfill Ltd | Health & social care | 2025 |
| Plunj Wellness Ltd | Health & social care | 2025 |
| Plus 10 Limited | Professional & scientific | 2023 |
| Plus MAX Letting Ltd | Real estate | 2025 |
| Plus Programmes Ltd | Education | 2022 |
| Plvat Limited | Professional & scientific | 2019 |
| Plymstock Wellcare Limited | Wholesale & retail | 2017 |
| PM Auto Sales Ltd | Wholesale & retail | 2021 |
| PM Global Capital Limited | Financial services | 2025 |
| PM SAI Medical Services Ltd | Health & social care | 2015 |
| PME Logistics Ltd | Transport & logistics | 2024 |
| Pmexpertise Limited | Professional & scientific | 2015 |
| PMJ Risk Solutions Limited | Financial services | 2019 |
| PN Health Consultancy Ltd | Health & social care | 2019 |
| PNC Global Logistics Limited | Financial services | 2011 |
| PNN Real Estate Ltd | Real estate | 2022 |
| PNS Couriers Ltd | Transport & logistics | 2015 |
| Pocheliev Transport Services Ltd | Transport & logistics | 2006 |
| Poetic Dreams Limited | Information & communication | 2020 |
| Point 12 (Bromley) Management Limited | Households | 2005 |
| Point Click Solutions Ltd | Information & communication | 2025 |
| Point Sports Therapy Clinic Ltd | Arts & recreation | 2024 |
| Pointshare Ltd | Information & communication | 2021 |
| Poised Creative Ltd | Professional & scientific | 2026 |
| Poke Strategy Ltd | Wholesale & retail | 2025 |
| Poker Film 2005 Ltd | Administrative & support | 2019 |
| Pokten Group Ltd | Real estate | 2025 |
| Polakowska Holdings Limited | Real estate | 2021 |
| Poleon Enterprise Limited | Health & social care | 2011 |
| Poli London Ltd | Other services | 2015 |
| Polish Builders 4U Limited | Construction | 2021 |
| Polish School of White Eagles in Streatham Ltd | Education | 2024 |
| Polk Ltd | Extraterritorial | 2022 |
| Pollard Property Services (UK) Ltd | Construction | 2012 |
| Polon Construction Limited | Construction | 2021 |
| Polonezz Limited | Wholesale & retail | 2012 |
| Polskiegazety.Com Limited | Wholesale & retail | 2012 |
| Polyhomes & Associates LLP | | 2019 |
| Polyhomes Limited | Real estate | 2008 |
| Pommys Hove Ltd | Hospitality | 2026 |
| Pomodoretto Ltd | Hospitality | 2013 |
| Pomson Property Co Limited | Real estate | 1957 |
| Pongo (UK) Air Fresheners Ltd | Manufacturing | 1960 |
| Ponte Nuovo Ltd | Hospitality | 2023 |
| Pontus Consulting Group Ltd | Professional & scientific | 2021 |
| Poonchoo Limited | Real estate | 2021 |
| POP UP Angel Ltd. | Wholesale & retail | 2011 |
| POP UP Parties Ltd | Arts & recreation | 2011 |
| Popcroydon Limited | Hospitality | 2022 |
| Poplar Court Freehold Limited | Households | 2007 |
| Popov Structural Engineers Limited | Professional & scientific | 2011 |
| Poppas Limited | Health & social care | 2020 |
| Poppun Ltd | Wholesale & retail | 2020 |
| Pops and Sons Ltd | Construction | 2022 |
| Porkele Consultancy Ltd | Information & communication | 2023 |
| Porodica Ltd | Wholesale & retail | 2022 |
| Port Glasgow Solutions Limited | Professional & scientific | 2017 |
| Port Regent (Phase Iiii) Management Limited | Households | 2000 |
| Porthill (Newcastle-Under-Lyme) Management Company Limited | Households | 2003 |
| Portland Basin (Tameside) Management Company Limited | Real estate | 2004 |
| Portland House (Doncaster) Management Limited | Households | 2024 |
| Portland House (Mgmnt) Ltd | Households | 1996 |
| Portman Vintners Ltd | Wholesale & retail | 2023 |
| Portmaster Limited | Transport & logistics | 1996 |
| Portmore Capital Limited | Construction | 2020 |
| Portoro Ltd | Wholesale & retail | 2023 |
| Posh Affair Limited | Information & communication | 2019 |
| Posh Skin Clinic Ltd | Other services | 2024 |
| Positive Dog Training Ltd | Professional & scientific | 2023 |
| Positive Healthcare Ltd | Health & social care | 2023 |
| Positive Investment Returns Limited | Professional & scientific | 2017 |
| Positive Particles Limited | Construction | 1998 |
| Positive Returns Limited | Professional & scientific | 2004 |
| Positive Steel Installations Ltd | Administrative & support | 2016 |
| Poslinks Solutions Co. Ltd | Wholesale & retail | 2016 |
| Post Sanity Ltd | Information & communication | 2021 |
| Potager Place Limited | Households | 2018 |
| Pothigai Consultancy Limited | Information & communication | 2019 |
| Potter's Consulting Ltd | Administrative & support | 2021 |
| Potters Field Tenants Association Limited | Households | 1978 |
| Potton Estate Management Company Limited | Real estate | 2020 |
| Potuk Properties Ltd | Real estate | 2018 |
| Poundarena Ltd | Water & waste | 2019 |
| Poundbank Stores Limited | Wholesale & retail | 2007 |
| Pour & Party Limited | Hospitality | 2026 |