| Pearce Manor (3) Residents Association Limited | Households | 1989 |
| Pearl Jewellery Limited | Wholesale & retail | 2023 |
| Pearl Street Property Company EV UK Limited | Wholesale & retail | 2026 |
| Pearl Street Property Company UK Limited | Wholesale & retail | 2026 |
| Peartree Accounts Limited | Professional & scientific | 2020 |
| Pebble Landscape Design Ltd | Administrative & support | 2020 |
| Pebble's Maid Ltd. | Administrative & support | 2019 |
| Peckishh? Treats Ltd | Hospitality | 2023 |
| Pedder Rentals Ltd | Real estate | 2026 |
| Peejays Hair Limited | Health & social care | 2015 |
| Peek Electrical Services Limited | Construction | 2019 |
| Peerless IT Solutions Limited | Information & communication | 2016 |
| PEG Squared Ltd | Professional & scientific | 2024 |
| Pegasus Cleaning Services Ltd | Administrative & support | 2024 |
| Pegasus Roofing and Construction Limited | Professional & scientific | 2021 |
| Pegram & Sons Ltd | Construction | 1990 |
| Pegram Holdings Limited | Professional & scientific | 2006 |
| Pegram Ltd | Real estate | 2021 |
| Pellogo Limited | Professional & scientific | 2023 |
| Pemberley Development Limited | Real estate | 2008 |
| Pembroke Gardens Close Management Company Limited | Households | 1996 |
| Pender & SON Roofing Ltd | Construction | 2026 |
| Pendulum Property Ltd | Real estate | 2016 |
| Pendwise Limited | Administrative & support | 2016 |
| Penguin Grove Ltd | Construction | 2018 |
| Penguin Holmes Limited | Real estate | 2017 |
| Pennick Essex Builders Limited | Construction | 2022 |
| Pennie & Co Childrenswear Ltd | Manufacturing | 2025 |
| Penny Drop Coaching Ltd | Professional & scientific | 2018 |
| Pennylands Consulting Limited | Professional & scientific | 2026 |
| Pennys Pals Limited | Other services | 2024 |
| Pennywell Family Company | Financial services | 2025 |
| Penventon Court Residents Limited | Households | 2023 |
| Penventon Court Residents Management Limited | Households | 2024 |
| Penydarren Planning Services Ltd | Professional & scientific | 2025 |
| Peoplebrowser London Events Limited | Administrative & support | 2022 |
| Pepperbox Design Ltd | Professional & scientific | 2009 |
| Peppercent Ltd | Wholesale & retail | 2022 |
| Perception Advertising Limited | Professional & scientific | 1999 |
| Percival House (Woodford Green) Management Company Limited | Households | 2004 |
| Percy F.Richardson Limited | Agriculture & fishing | 1961 |
| Perfect Day Group Ltd | Hospitality | 2016 |
| Perform First Ltd | Health & social care | 2023 |
| Performance Insight Consultancy Ltd | Professional & scientific | 2023 |
| Performance Marketer Collective Ltd | Professional & scientific | 2025 |
| Performance Paws Homestays Ltd | Agriculture & fishing | 2024 |
| Performance Paws Outdoors Ltd | Agriculture & fishing | 2023 |
| Performance Paws Training Ltd | Agriculture & fishing | 2024 |
| Performance Physio App Ltd | Health & social care | 2022 |
| Performance Pump & Equipment Company Limited | Administrative & support | 2002 |
| Performane Paws Walks and Services Ltd | Agriculture & fishing | 2024 |
| Peritus Partners Ltd | Administrative & support | 2021 |
| Perla’S Grill Limited | Hospitality | 2025 |
| Perrin Properties Ltd | Real estate | 2021 |
| Perry Performance Roses Ltd | Education | 2026 |
| Perry Road Transport Limited | Transport & logistics | 2019 |
| Perryfields Enterprise Academy Trust: LED by Perryfields Junior School Limited | Education | 2016 |
| Perrylink Limited | Extraterritorial | 2015 |
| Persephone Group Services Ltd | Wholesale & retail | 2024 |
| Peslocus Healthcare Limited | Health & social care | 2015 |
| Pest Defence Ltd | Other services | 1989 |
| Pest Prevention Limited | Extraterritorial | 2020 |
| Pet Angels Limited | Other services | 2015 |
| Peta Austin Limited | Real estate | 1999 |
| Petadmin Limited | Information & communication | 2009 |
| Peter Davey & Associates Limited | Information & communication | 2016 |
| Peter Fleet Limited | Professional & scientific | 2024 |
| Peter Hodgkinson Theatrical Services Limited | Arts & recreation | 2019 |
| Peter Johnson Training Ltd | Education | 2020 |
| Peter Lovell (UK) Limited | Transport & logistics | 1990 |
| Peter Morton Removals UK Ltd | Transport & logistics | 2022 |
| Peter Mould Workshop Ltd | Manufacturing | 2002 |
| Peter Woodcock & SON Limited | Construction | 2007 |
| Peterdisplays Limited | Manufacturing | 1968 |
| Peteve Care Ltd | Health & social care | 2024 |
| Petit Baddow Vineyard & Farm Ltd | Agriculture & fishing | 2026 |
| Petit Marketing Company Ltd | Professional & scientific | 2022 |
| Petrobuild Contracts Ltd | Construction | 2018 |
| Peverel Car Company Limited | Wholesale & retail | 2021 |
| PF UK Ltd | Wholesale & retail | 2025 |
| PFR Welding and Fabrication Ltd | Manufacturing | 2025 |
| PFY Pallets Ltd | Transport & logistics | 2023 |
| PG1 Electrical Essex Ltd | Construction | 2025 |
| PGA Care Ltd | Health & social care | 2016 |
| PGB Diagnostics Limited | Health & social care | 2000 |
| PGB Screen Repairs Ltd | Wholesale & retail | 2019 |
| PGI Reface Limited | Manufacturing | 2018 |
| PGT Rentals Ltd | Real estate | 2020 |
| PH Advantage Limited | Other services | 2009 |
| PH Recruitment Limited | Administrative & support | 2018 |
| Phar Property Limited | Real estate | 2013 |
| Pharma Hub Solutions Limited | Administrative & support | 2025 |
| Pharoah Fencing Ltd | Construction | 2007 |
| Pharoah Groundworks Limited | Construction | 2018 |
| Pharoah Landscapes Limited | Construction | 2018 |
| Pharoah Plant Hire Limited | Administrative & support | 2018 |
| Pharoah Properties (Maldon Wycke) Ltd | Construction | 2021 |
| Phase 3 Interiors Ltd | Construction | 2023 |
| Phasenext Property Management Limited | Households | 1990 |
| Pheby & Sons Ltd | Construction | 2021 |