| Phil Hoggett Inspection Services Ltd | Professional & scientific | 2007 |
| Philanthropy Together Ltd | Professional & scientific | 2022 |
| Philip James Commercial Limited | Households | 2020 |
| Philip Moroz Sound Ltd | Information & communication | 2021 |
| Phillips Consultancy Services Limited | Administrative & support | 2024 |
| Phillips Precision Limited | Manufacturing | 2016 |
| Philpott & Company Limited | Construction | 1998 |
| Philpott & Company Services Limited | Construction | 2002 |
| PHM Marketing Services Ltd | Professional & scientific | 2024 |
| Phoenix Automation & Developments Limited | Construction | 2015 |
| Phoenix Biotech Limited | Professional & scientific | 2025 |
| Phoenix Cars Limited | Transport & logistics | 2023 |
| Phoenix Interim Finance Directors Limited | Professional & scientific | 2011 |
| Phoenix Management and Consulting Limited | Construction | 2009 |
| Phoenix Motor Solutions Ltd | Wholesale & retail | 2019 |
| Phoenix Premier Ltd | Real estate | 2018 |
| Phoenix Retail Services Ltd | Wholesale & retail | 2000 |
| Phoenix Waste Management Limited | Water & waste | 2014 |
| Pholex Holdings Ltd | Financial services | 2024 |
| Pholex Limited | Information & communication | 2013 |
| Pholex Power Ltd | Administrative & support | 2024 |
| Phonemart Limited | Wholesale & retail | 2015 |
| Phonics Holdings Limited | Financial services | 2022 |
| Photon Enterprises Ltd | Wholesale & retail | 2013 |
| Photron (Europe) Limited | Administrative & support | 2000 |
| Physical Company Limited | Wholesale & retail | 1999 |
| PI and ZU Limited | Public administration | 2024 |
| Pickford Properties Ltd | Real estate | 2021 |
| Picture Construction Limited | Information & communication | 2004 |
| Piddington Engineering Limited | Manufacturing | 2000 |
| Piddington Estates Limited | Real estate | 2014 |
| Piece of Cake 4 Ltd | Manufacturing | 2018 |
| Pierre Higginson Consulting Limited | Other services | 2017 |
| Pierre Imarni Limited | Information & communication | 2025 |
| Piers Photography Ltd | Professional & scientific | 2025 |
| Pifocus Limited | Information & communication | 2023 |
| Piku.Riko.Store Ltd | Wholesale & retail | 2023 |
| Piledesigns Limited | Professional & scientific | 2004 |
| Pillar and Post Holdings Ltd | Manufacturing | 2025 |
| Pilot International Logistics Limited | Transport & logistics | 1977 |
| Pilot Mentoring Ltd | Education | 2025 |
| Pine Close Management Limited | Households | 1971 |
| Pineapple Digital Ltd | Professional & scientific | 2022 |
| Pinjeri Limited | Manufacturing | 2023 |
| Pink Cactus Events Ltd | Hospitality | 2021 |
| Pink Hedgehog Communications Ltd | Professional & scientific | 2025 |
| Pink Mews Limited | Real estate | 2017 |
| Pinnacle Agencies Limited | Professional & scientific | 2026 |
| Pinpoint Management Accounting Limited | Professional & scientific | 2022 |
| Pinpoint Marketing Consultancy Ltd | Professional & scientific | 2008 |
| Pint of NO Return Limited | Hospitality | 2025 |
| Pipe Work Installations Ltd | Construction | 2011 |
| Pipsense AI Ltd | Information & communication | 2026 |
| Pirateswanted Ltd | Construction | 2020 |
| Pires Investments Limited | Financial services | 2023 |
| Pitcher Property Limited | Real estate | 2012 |
| Pitstop Car Wash Ltd | Other services | 2015 |
| PIX & Finn Property Ltd | Real estate | 2025 |
| Pixel Hero Media Limited | Information & communication | 2015 |
| Pixel Panda Creative Ltd | Professional & scientific | 2025 |
| Pixelthorn Ltd | Information & communication | 2013 |
| Pixprintz Ltd | Manufacturing | 2024 |
| Pixy Store Ltd | Wholesale & retail | 2023 |
| PJ Design & Build Limited | Households | 2025 |
| PJ Tech Ltd | Information & communication | 2018 |
| Pjay Services Ltd | Administrative & support | 2015 |
| PJC GAS Services Limited | Construction | 2023 |
| Pjdd Limited | Professional & scientific | 2025 |
| PKM Systems Ltd | Professional & scientific | 2013 |
| Pl@Stics.Info Ltd. | Professional & scientific | 2013 |
| Plain Sailing IT Limited | Information & communication | 2009 |
| Plain Sailing Ltd | Real estate | 2021 |
| Plamsi Ltd | Construction | 2016 |
| Planning and Public Law Limited | Professional & scientific | 2014 |
| Planzzup Limited | Wholesale & retail | 2022 |
| Plas Brymbo Management Company Limited | Households | 2005 |
| Plaster Profiles Ltd | Construction | 2015 |
| Plastering GIM Ltd | Construction | 2024 |
| Plastersmith Ltd | Construction | 2020 |
| Plastic and Composite Machining Solutions Limited | Manufacturing | 2011 |
| Plastock Limited | Manufacturing | 2020 |
| Platform HR Services Ltd | Professional & scientific | 2004 |
| Platinum Builders and Construction Ltd | Construction | 2020 |
| Platinum Class Cars Ltd | Transport & logistics | 2023 |
| Platinum Coach Hire Limited | Transport & logistics | 2012 |
| Platinum Destinations Limited | Financial services | 2008 |
| Platinum Home Services Limited | Construction | 2022 |
| Platinum Motoring Solutions Ltd | Wholesale & retail | 2025 |
| Platinum Music Services Ltd | Extraterritorial | 2023 |
| Platinum Prime Global Motors Ltd | Wholesale & retail | 2026 |
| Platinum Prime Security Ltd | Administrative & support | 2026 |
| Platinum Taxis Beaconsfield Ltd | Transport & logistics | 2025 |
| Platinum Universal Ltd | Hospitality | 2017 |
| Platiunumpeakproperties Ltd | Extraterritorial | 2024 |
| Playbebe Limited | Administrative & support | 2023 |
| Playground Gym Ltd | Arts & recreation | 2019 |
| Playground Media Limited | Professional & scientific | 2026 |
| Playtrain Express LLP | | 2008 |
| Playtrain Holdings Ltd | Real estate | 2023 |
| Plaza Cars Ltd | Transport & logistics | 2018 |