| P Calver & Sons Limited | Construction | 2015 |
| P J Downs Limited | Transport & logistics | 2023 |
| P K Refrigeration Limited | Manufacturing | 2001 |
| P L Tools Limited | Wholesale & retail | 2026 |
| P Main Investments Limited | Real estate | 2026 |
| P Mason Engineering Limited | Professional & scientific | 1995 |
| P P R Grebe Ltd | Real estate | 2018 |
| P R Services (Essex) Limited | Wholesale & retail | 2001 |
| P R Stationers Ltd | Wholesale & retail | 2025 |
| P T Automotive Limited | Wholesale & retail | 2013 |
| P&E Cafe Maldon Ltd | Hospitality | 2022 |
| Pacce Ltd | Other services | 2015 |
| Pace E Services Ltd | Construction | 2023 |
| Padel Distribution UK Ltd | Extraterritorial | 2021 |
| Padel Shack Limited | Extraterritorial | 2021 |
| Padelworkx Ltd | Construction | 2025 |
| Page M&E Limited | Construction | 2022 |
| Paintworks Property Limited | Real estate | 2016 |
| Palettepro Ltd | Wholesale & retail | 2019 |
| Palign Consulting Limited | Administrative & support | 2025 |
| Palmers Installations Limited | Construction | 2024 |
| Panther Fitness Limited | Professional & scientific | 1992 |
| Paper Tiger Food Services Ltd | Hospitality | 2025 |
| PAR Forwarding Services Limited | Transport & logistics | 2007 |
| Paragon Security Limited | Manufacturing | 2010 |
| Paramount Connections Limited | Construction | 2002 |
| Park Estates Essex Ltd | Extraterritorial | 2020 |
| Parks Dental Limited | Health & social care | 2014 |
| Paruls Properties Ltd | Real estate | 2026 |
| Patrick Murphy Limited | Health & social care | 2003 |
| Patrik Minder Limited | Hospitality | 2002 |
| Patson Media Limited | Arts & recreation | 2017 |
| Pattavina Electrical Limited | Extraterritorial | 2014 |
| Patterdale Holdings Limited | Financial services | 2026 |
| Paty Auto Centre Ltd | Wholesale & retail | 2016 |
| Paty Lettings Ltd | Hospitality | 2026 |
| Paul Bailey Car Sales Limited | Wholesale & retail | 1999 |
| Paul Cooke Transport Limited | Transport & logistics | 2002 |
| Paul Dennicci Limited | Wholesale & retail | 2022 |
| Paul Freeman Tiling Ltd | Construction | 2011 |
| Paul Lucas Bathroom Supplies Limited | Construction | 2014 |
| Paverose Ltd | Professional & scientific | 2024 |
| PDR Restorations Limited | Administrative & support | 2015 |
| PDS Marketing Limited | Professional & scientific | 2010 |
| Peachey IT Ltd | Information & communication | 2014 |
| Peacock Holdings Limited | Professional & scientific | 2005 |
| Peak Education Ltd | Administrative & support | 2012 |
| Peak Training & Consultancy Limited | Other services | 2007 |
| Pearl Edge Property Ltd | Real estate | 2021 |
| Pearl Edge Rooms Ltd | Real estate | 2025 |
| Pedley Group Limited | Professional & scientific | 2016 |
| Pedship Ltd | Manufacturing | 2020 |
| Pegasus FLY Mask Limited | Manufacturing | 2025 |
| Pegasus Footwear Limited | Health & social care | 2025 |
| Pelsall Homes Limited | Real estate | 2025 |
| Pelsall Windows and Glass Ltd | Construction | 2007 |
| Pemberton Farms (Holdings) Limited | Agriculture & fishing | 2013 |
| Penhallow Associates Limited | Professional & scientific | 2019 |
| Penny Barn Limited | Transport & logistics | 2025 |
| Pennybrook Ltd | Administrative & support | 2026 |
| People Worldwide Limited | Information & communication | 2026 |
| Performance Open Water Coaching Limited | Arts & recreation | 2025 |
| Perrinio Limited | Real estate | 2006 |
| Pet Funerals UK Ltd | Other services | 2025 |
| Peter Hare Limited | Construction | 2002 |
| Peter LOE Restorations Limited | Construction | 1999 |
| Petit Stays Limited | Hospitality | 2026 |
| Petro Designs Limited | Professional & scientific | 1996 |
| Petrus Holdings Limited | Financial services | 2025 |
| Peverel Restorations Ltd | Construction | 2026 |
| Phad Thai Takeaway Ltd | Hospitality | 2021 |
| Phil Edwards Tools Ltd | Wholesale & retail | 2012 |
| PHK (RLF) Limited | Construction | 2025 |
| PHK Properties Limited | Construction | 2025 |
| Phoenix Bathrooms and Kitchens Ltd | Construction | 2021 |
| Phoenix Place for Health Limited | Extraterritorial | 2015 |
| Piglets Pantry Ltd | Extraterritorial | 2026 |
| Pineview Property Solutions Ltd | Real estate | 2026 |
| Pink Builds Ltd | Construction | 2017 |
| Pipe Media Design Limited | Information & communication | 2013 |
| Pirene Ltd | Construction | 2018 |
| PJ Downs Commercials Ltd | Transport & logistics | 2026 |
| PJK Funeral Directors Limited | Other services | 2014 |
| Placce Ltd | Arts & recreation | 2018 |
| Plan B Property Management Ltd | Real estate | 2022 |
| Planet Entertainment Group Ltd | Arts & recreation | 2026 |
| Planetwide Limited | Professional & scientific | 2019 |
| Plans for Plants Ltd | Administrative & support | 2021 |
| Plant IT Limited | Professional & scientific | 2008 |
| Plasufix Limited | Construction | 1998 |
| Platinum Carpentry Ltd | Construction | 2019 |
| Platinum Glazing Services Ltd | Construction | 2026 |
| Platinum Travel Consultancy Limited | Administrative & support | 2023 |
| Play to Z Limited | Wholesale & retail | 2007 |
| Plbs Trade Limited | Manufacturing | 2017 |
| Pleasant Landscapes Ltd | Administrative & support | 2025 |
| Plenty of Thyme Ltd | Hospitality | 2021 |
| PLS Engineering Ltd | Manufacturing | 2000 |
| PLS Group Holdings Limited | Financial services | 2023 |
| PLT. Limited | Wholesale & retail | 2011 |