| PBD Group Ltd | Financial services | 2020 |
| PBH Garage Doors Limited | Construction | 2018 |
| PC Facilities Ltd | Transport & logistics | 2023 |
| PC Move Ltd | Administrative & support | 2016 |
| PCF Care Ltd | Health & social care | 2022 |
| PCR Engineering Limited | Construction | 2014 |
| PCR Maintenance Limited | Administrative & support | 2005 |
| PCS Pro Ltd | Real estate | 2024 |
| PCS Services Limited | Health & social care | 2018 |
| PDC Haulage Ltd | Transport & logistics | 2018 |
| PDJ Carpentry Limited | Manufacturing | 2014 |
| PDN Build Solutions Limited | Construction | 2017 |
| PE & AR Rental Management Ltd | Real estate | 2024 |
| Peabody Assets Group Ltd | Construction | 2023 |
| Peace Dwellings Limited | Real estate | 2025 |
| Peacehaven Securities Limited | Households | 1973 |
| Peacock Rise Developments Limited | Construction | 2015 |
| Pearl Investing Ltd. | Financial services | 2016 |
| Pearlgate Medical Ltd | Health & social care | 2024 |
| Pearlheights Limited | Real estate | 2017 |
| Pearlify Investments UK Ltd | Real estate | 2024 |
| Pedac Limited | Public administration | 2023 |
| Peerpoint Partners LLP | | 2021 |
| PEF Consulting Limited | Administrative & support | 2011 |
| Pegasus Building Surveys Limited | Professional & scientific | 2025 |
| Peka Group Ltd | Construction | 2025 |
| Pelaz Ltd | Hospitality | 2025 |
| Pelham Family Holdings Ltd | Other services | 2023 |
| Pelican Cyberrisk Advisory Services Limited | Information & communication | 2024 |
| Pellican Security Services Ltd | Administrative & support | 2023 |
| Pelzmide Limited | Health & social care | 2016 |
| Pencroft Estate Management Limited | Households | 1997 |
| Pendrix Management Ltd | Information & communication | 2024 |
| Penfold and Riddington Ltd | Wholesale & retail | 2025 |
| Penfold Container Storage Ltd | Transport & logistics | 2025 |
| Pengfei Electrical Appliance UK Limited | Wholesale & retail | 2022 |
| Pengs Property Ltd | Real estate | 2018 |
| Penguin Business Services Ltd | Professional & scientific | 2017 |
| Pennymehmet Homes Ltd | Real estate | 2025 |
| Penrose Electrics Ltd | Construction | 2024 |
| Penshurst College Ltd | Education | 2025 |
| Penta Homes Ltd | Hospitality | 2022 |
| Pentagon Freight Projects Limited | Transport & logistics | 2016 |
| Pentagon Freight Services PLC | Transport & logistics | 1974 |
| Pentagon Freight Shared Services Limited | Administrative & support | 2016 |
| Pentagon Holdings Limited | Financial services | 2000 |
| Pentagon Marine Limited | Transport & logistics | 1967 |
| Pentagon Transport Limited | Transport & logistics | 2002 |
| Pentamax Solutions Limited | Information & communication | 2008 |
| Penvale Ltd | Real estate | 2021 |
| People Management Partners Ltd | Professional & scientific | 2014 |
| People-Centred Strategies Ltd | Professional & scientific | 2025 |
| Peoples Mansion Ltd | Real estate | 2024 |
| Pepkiing Ltd | Professional & scientific | 2026 |
| PER Holdings Limited | Financial services | 2025 |
| Perama Consultancy Limited | Health & social care | 2016 |
| Perdamas Services Limited | Public administration | 2022 |
| Pere Fincomm Services Ltd | Wholesale & retail | 2021 |
| Perfect Chicken Ltd | Hospitality | 2025 |
| Perfect Gardens Landscaping Ltd | Administrative & support | 2023 |
| Perfection Dogs Ltd | Other services | 2021 |
| Perhentian Limited | Professional & scientific | 2003 |
| Peri Builders Ltd | Other services | 2017 |
| Perkextra Limited | Information & communication | 2022 |
| Perky PEN Ltd | Manufacturing | 2023 |
| Perpetual Insight Ltd | Information & communication | 2015 |
| Perren Peak Properties Limited | Professional & scientific | 2015 |
| Perri Savage Design Ltd | Arts & recreation | 2020 |
| Perryhomes Limited | Real estate | 2026 |
| Persona a Ltd | Other services | 2018 |
| Personafin AI Technology Ltd | Information & communication | 2024 |
| Personafin.Ai Ltd | Other services | 2021 |
| Personalchemist Ltd | Health & social care | 2020 |
| Personalisation AI Ltd | Information & communication | 2024 |
| Personalise Your Luggage Limited | Wholesale & retail | 2022 |
| Pervasive Solutions Group Ltd | Professional & scientific | 2023 |
| Perygl Ltd | Professional & scientific | 2020 |
| Pest ID Kent Limited | Other services | 2025 |
| Pet Care Innovation Ltd | Other services | 2021 |
| Peter I Martin Consulting Ltd | Construction | 2023 |
| Peter Torry Consultancy Limited | Professional & scientific | 2007 |
| Peter Woollard Limited | Arts & recreation | 2010 |
| Peter-Philip Care Ltd | Health & social care | 2021 |
| Peter-Philip Education and Training Ltd | Administrative & support | 2022 |
| Peters Property Investments Ltd | Real estate | 2025 |
| Petra Accounting Services Limited | Professional & scientific | 2010 |
| Petra Newton Limited | Professional & scientific | 2018 |
| Pflaum Transport and Logistik Ltd | Transport & logistics | 2022 |
| PG Graphics Limited | Professional & scientific | 2025 |
| PGM Building Services Ltd | Construction | 2026 |
| PH Woodman Ltd | Real estate | 2019 |
| Phantom Developments Limited | Construction | 2020 |
| Pharmadrug Consulting Ltd | Health & social care | 2013 |
| Pharmpact Ltd | Transport & logistics | 2012 |
| Pharrahproperties Ltd | Real estate | 2026 |
| Phase One Construction (P1-C) Ltd | Construction | 2022 |
| Phayden Properties Ltd | Real estate | 2018 |
| Phenomtech Ltd | Information & communication | 2018 |
| Phil Brown Smart Repairs Ltd | Wholesale & retail | 2014 |
| Phil Construct Ltd | Construction | 2023 |