| Paws of Pakefield Limited | Extraterritorial | 2006 |
| Pawvia Limited | Agriculture & fishing | 2024 |
| Paxtar Ltd | Professional & scientific | 2024 |
| Payalert Limited | Financial services | 2023 |
| Paycheck Plus UK Ltd | Professional & scientific | 2014 |
| Payplus Limited | Administrative & support | 2008 |
| Paypulse Consultancy Ltd | Professional & scientific | 2024 |
| Payride Ltd | Transport & logistics | 2026 |
| Payroll Bureau Hub Service Limited | Professional & scientific | 2024 |
| Payroll Proficiency Services Limited | Administrative & support | 2024 |
| Paysys Resourcing Limited | Information & communication | 2014 |
| PB Castings Ltd | Manufacturing | 2026 |
| PB Haven Properties Ltd | Real estate | 2024 |
| PB Simha & Co Limited | Real estate | 2019 |
| PB02 Construction Solutions Ltd | Construction | 2026 |
| PB02 Constructions Ltd | Construction | 2018 |
| PB02 Property Ltd | Real estate | 2024 |
| PB05 Building Construction Ltd | Construction | 2024 |
| PB07 Enterprise Ltd | Wholesale & retail | 2022 |
| PB07 Transport Ltd | Transport & logistics | 2017 |
| PB10 Transport Ltd | Transport & logistics | 2021 |
| PBA Ventures Ltd | Other services | 2025 |
| PBB Development Limited | Construction | 2015 |
| PBH Solutions Ltd | Other services | 2018 |
| Pbhm Planthire Ltd | Construction | 2017 |
| Pbid Ltd | Hospitality | 2026 |
| PBJ Works Limited | Construction | 2021 |
| PBO2 Chahal Ltd | Transport & logistics | 2024 |
| PC Fit Ltd | Construction | 2019 |
| PC Investment Partners Ltd | Real estate | 2026 |
| PC Right Limited | Information & communication | 2002 |
| PCL Transport 24/7 Limited | Transport & logistics | 2009 |
| PCO Claims Ltd | Professional & scientific | 2026 |
| Pconet Limited | Manufacturing | 2024 |
| Pcrr Homes Ltd | Real estate | 2025 |
| PCS Management Services Ltd | Hospitality | 2025 |
| PD Fire Ltd | Construction | 2016 |
| PD Motors MOT Limited | Administrative & support | 2010 |
| PDB Developments Limited | Construction | 2024 |
| PDD Transport Ltd | Transport & logistics | 2018 |
| PDF Community Enterprise CIC | Education | 2012 |
| PDF NET Limited | Administrative & support | 1998 |
| PDL Property Holdings Ltd | Real estate | 2025 |
| Peaakify Ltd | Wholesale & retail | 2025 |
| Peaceful Stays Ltd | Real estate | 2025 |
| Peacock Property Maintenance Enterprises Limited | Construction | 2018 |
| Peak Genesis Ltd | Extraterritorial | 2022 |
| Peak Interior Design Ltd | Construction | 2018 |
| Peak Performance Roofing and Building Ltd | Construction | 2026 |
| Peak Residential Ltd | Real estate | 2020 |
| Peak Travels Ltd | Transport & logistics | 2019 |
| Peak Way Ltd | Construction | 2025 |
| Peakhive Ltd | Wholesale & retail | 2025 |
| Peakpointinnovations Ltd | Wholesale & retail | 2024 |
| Peanut Projects Limited | Extraterritorial | 2016 |
| Pearl Clinicals Limited | Administrative & support | 2022 |
| Pearl Consultants Ltd | Information & communication | 2022 |
| Pearl Mortgage and Protection Services Ltd | Financial services | 2020 |
| Pearl Ventures Ltd | Wholesale & retail | 2012 |
| Pearlansh Properties Ltd | Real estate | 2023 |
| Pearlybridge Ltd | Health & social care | 2025 |
| Pearse Electrical Contracting Ltd | Construction | 2012 |
| Peasnell Power Limited | Administrative & support | 2019 |
| Pebbles Trade Ltd | Wholesale & retail | 2024 |
| Pecan Enterprises Ltd | Professional & scientific | 2019 |
| Pedal Red Ltd | Professional & scientific | 2020 |
| Pedro Consultants Ltd | Professional & scientific | 2023 |
| Peedhee Ltd | Information & communication | 2026 |
| Pegadas Holdings Limited | Financial services | 2021 |
| Pegasus Business System Ltd | Administrative & support | 2019 |
| Pelham Court Brighton Ltd | Households | 2009 |
| Pelican Global Travel Ltd | Administrative & support | 2024 |
| Pelipod Ltd | Transport & logistics | 2013 |
| Pelo Hair & Beauty Limited | Other services | 2012 |
| Pelt London Limited | Construction | 2024 |
| Pelton Estates Ltd | Real estate | 2022 |
| Pelton Property Lettings Ltd | Real estate | 2021 |
| Pencross Limited | Administrative & support | 1981 |
| Pendragon Solutions Ltd | Transport & logistics | 2016 |
| Peng Peng Consulting Ltd | Professional & scientific | 2025 |
| Peninsula Clinic Ltd | Health & social care | 2025 |
| Pension Online Limited | Information & communication | 2017 |
| Penta Group IT Limited | Information & communication | 2015 |
| Penta Retail Limited | Wholesale & retail | 2025 |
| Pentagon Health Care Solutions Ltd | Administrative & support | 2018 |
| Pentathlon Sports Limited | Extraterritorial | 2003 |
| Pentlow Community Care Limited | Administrative & support | 2007 |
| Pentlow Nursing Home Limited | Administrative & support | 2007 |
| People 2 People Resourcing Limited | Administrative & support | 2025 |
| People Focused Care Ltd | Health & social care | 2025 |
| PER Person PER Night Limited | Hospitality | 2018 |
| PER Square Meter Ltd | Construction | 2019 |
| Percept Creation Ltd | Arts & recreation | 2020 |
| Perennial Newco 2 Ltd | Financial services | 2018 |
| Perfect Car Wash Limited | Administrative & support | 2022 |
| Perfect Chem Engineering UK Limited | Manufacturing | 2021 |
| Perfect Detail Ltd | Wholesale & retail | 2011 |
| Perfect GAS Services+ Ltd | Real estate | 2025 |
| Perfect Homes 2 LET Limited | Real estate | 2012 |
| Perfect Pizza (Slough) Ltd | Hospitality | 2011 |