| P Tite Tax Consultants Limited | Professional & scientific | 2000 |
| P&A Sparkle Cleaning Ltd | Administrative & support | 2026 |
| P&B Service Solution Limited | Education | 2022 |
| P&K Property Management Ltd | Real estate | 2024 |
| P&N Property Managements Ltd | Real estate | 2024 |
| P&O Transport Limited | Transport & logistics | 2022 |
| P. Close Management Co Ltd | Households | 2003 |
| P. Whiteman Services Ltd | Wholesale & retail | 2019 |
| P.D.S. Communications Limited | Information & communication | 1997 |
| P14TES Ltd | Wholesale & retail | 2020 |
| P3 Concept Ltd | Construction | 2015 |
| PA Drain Repairs UK Ltd | Construction | 2017 |
| Pablo Magic Cleaner Limited | Other services | 2024 |
| Pabs Cleaning Ltd | Administrative & support | 2018 |
| Pacific O & O Limited | Information & communication | 2013 |
| Pack Tech Limited | Professional & scientific | 2000 |
| Packaging Source Limited | Wholesale & retail | 2022 |
| Packfield Ltd | Professional & scientific | 2010 |
| PAD Holdings Ltd | Financial services | 2022 |
| Paddy Developments (Kent) Limited | Construction | 2026 |
| Padwa Ltd | Health & social care | 2026 |
| Paia Health Ltd | Information & communication | 2024 |
| Pakus Luxe Barbers Signature Ltd | Wholesale & retail | 2025 |
| Palace of India Ltd | Hospitality | 2024 |
| Palindrome Films Ltd | Professional & scientific | 2019 |
| Palm Springs Capital Limited | Professional & scientific | 2018 |
| Palmer Brothers (London) Limited | Construction | 1996 |
| Paly Consult Limited | Health & social care | 2004 |
| Panache Property Services Limited | Construction | 2017 |
| Panaisa Limited | Hospitality | 2025 |
| Panda Tech Hub Ltd | Information & communication | 2016 |
| Panda Tiling & Property Ltd | Real estate | 2022 |
| Pang Empire Estate Ltd | Real estate | 2024 |
| Panjab Malwa Computers Ltd | Information & communication | 2024 |
| Pantaleao Electrical & Plumbing Services Ltd | Construction | 2026 |
| Paok 4 Ltd | Manufacturing | 2021 |
| Paolo Grungo Designer Limited | Professional & scientific | 2019 |
| Papacy Properties Ltd | Real estate | 2023 |
| Paper Mills Management Company Limited | Real estate | 2012 |
| Papi's Grill Limited | Hospitality | 2011 |
| Paragon Court (Margate) RTM Company Limited | Households | 2019 |
| Parallel Pipeline Limited | Manufacturing | 2007 |
| Park Court (Harlow) Association Limited | Households | 1960 |
| Park Stevens Property Services Ltd | Construction | 2008 |
| Parkers Property Sourcing Ltd | Real estate | 2024 |
| Parking Lift Solutions Ltd | Extraterritorial | 2018 |
| Parklands (Worcester Park) Management Company Limited | Households | 2010 |
| Parklane Medical Resources Limited | Health & social care | 2018 |
| Parklane Neuropsychiatric and Medicolegal Services Ltd | Health & social care | 2024 |
| Parks Construction Ltd | Construction | 2016 |
| Parkstone Hills Limited | Financial services | 2016 |
| Parkview Road Limited | Households | 2011 |
| Parkwood Consultancy Investments Limited | Real estate | 2012 |
| Parmenter Roofing Limited | Construction | 2011 |
| Pars Autos Limited | Wholesale & retail | 2017 |
| Parsfields Accountancy Services Ltd | Professional & scientific | 2024 |
| Parsonage Bank (Eynsford) Management Limited | Real estate | 2004 |
| Parsons Air Conditioning Engineers Ltd | Construction | 2021 |
| Parthasarathi Enterprise Ltd | Wholesale & retail | 2026 |
| Partita Music Ltd | Information & communication | 2020 |
| Party & Moore Limited | Transport & logistics | 2024 |
| PAS Logistics Limited | Transport & logistics | 2023 |
| Pascal Construction Ltd | Construction | 2015 |
| Pass + Tutors Ltd | Education | 2016 |
| Passionate Foods Limited | Hospitality | 2025 |
| Passionate Group Ltd | Manufacturing | 2023 |
| Passmaster Driving Academy Ltd | Wholesale & retail | 2021 |
| Pasupuleti Solutions Ltd | Information & communication | 2014 |
| Patego Consulting Legal Services Ltd. | Real estate | 2015 |
| Pathfinding Futures CIC | Education | 2025 |
| Pathlender Ltd | Education | 2025 |
| Pathway Heritage Network Ltd | Other services | 2025 |
| Pathway Services Ltd | Hospitality | 2020 |
| Patila Links Global Concept Ltd | Real estate | 2022 |
| Patoga Multi-Concept (UK) Ltd | Administrative & support | 2015 |
| Patrice Estates Ltd | Real estate | 2017 |
| Patriot Merchandise Ltd | Wholesale & retail | 2025 |
| Patron Production Limited | Information & communication | 2013 |
| Paul & TOM PT Ltd | Other services | 2025 |
| Paul Akins Productions Ltd | Information & communication | 2020 |
| Paul Carter Modelmaking Ltd | Information & communication | 2013 |
| Paul Herron Limited | Information & communication | 2019 |
| Paul Nicholas Cooper Limited | Professional & scientific | 2018 |
| Paul Page Golf Academy Ltd | Arts & recreation | 2017 |
| Paul Rehbein Ltd | Wholesale & retail | 2016 |
| Paullen Limited | Real estate | 2025 |
| Pave Smart Landscaping & Patios Ltd | Construction | 2023 |
| Paving Design Limited | Construction | 2017 |
| PAW Prints London Limited | Wholesale & retail | 2025 |
| Pawnshop Ltd | Financial services | 2025 |
| Paximat Solutions Ltd | Information & communication | 2026 |
| Paxwell Online Limited | Wholesale & retail | 2019 |
| Payce Power Solutions Limited | Construction | 2018 |
| Payinc Group Limited | Financial services | 2012 |
| Payroll and Systems Consultancy Services Ltd | Information & communication | 2020 |
| Payroll Xpress Limited | Professional & scientific | 2015 |
| Paytrax Ltd | Administrative & support | 2008 |
| PB Garden Service Ltd | Administrative & support | 2024 |
| PB Investliner Ltd | Real estate | 2023 |
| PB Tiling Limited | Construction | 2018 |