| Philton Polythene Converters Limited | Manufacturing | 1969 |
| Phusionsoft Limited | Information & communication | 2013 |
| Physiotherapy Kent Ltd | Health & social care | 2012 |
| Pilgrims Innovations Limited | Administrative & support | 2025 |
| Pink Chilliz SS8 Ltd | Hospitality | 2017 |
| Pintea Trans Ltd | Transport & logistics | 2022 |
| Pioneer Assets Essex Limited | Other services | 2006 |
| Pioneer Trading Co Essex Limited | Other services | 2006 |
| Pitbull Productions Limited | Arts & recreation | 2015 |
| Pitsea Support Services Limited | Administrative & support | 2021 |
| Pizzazz Ltd | Information & communication | 2007 |
| Pjdi Limited | Wholesale & retail | 2017 |
| PJH Home Improvements Ltd | Construction | 2025 |
| Platinum 21 Limited | Wholesale & retail | 2008 |
| Platinum Rose Salons Limited | Other services | 2016 |
| Playfix Services UK Limited | Manufacturing | 2025 |
| Playwave Ltd | Construction | 2025 |
| Plumb Trade Limited | Wholesale & retail | 1997 |
| PM Installations Essex Limited | Construction | 2025 |
| PMH (Holdings) Limited | Financial services | 1988 |
| Pnunn Consulting Ltd | Professional & scientific | 2019 |
| Point to Point Taxi Hire Limited | Administrative & support | 2025 |
| POP QR Friday Ltd | Other services | 2024 |
| Portflair Limited | Other services | 1984 |
| Portflair Quarries Ltd | Administrative & support | 2015 |
| Portflair Storage Limited | Other services | 2023 |
| Portman Hope Ltd | Professional & scientific | 2025 |
| Posh Garden Parties Limited | Administrative & support | 2016 |
| Power 365 Holdings Limited | Extraterritorial | 2021 |
| Power 365 PV Limited | Extraterritorial | 2021 |
| Powerhouse Justplay Limited | Information & communication | 2018 |
| Powerhouse Studios Limited | Information & communication | 2016 |
| Practus Consulting Limited | Professional & scientific | 2008 |
| Praise Christian Centre International | Other services | 2004 |
| Precision Training & Consultancy Limited | Professional & scientific | 2022 |
| Premier Wrestling Limited | Arts & recreation | 2017 |
| Premiership Printing Limited | Manufacturing | 2015 |
| Premium Carpentry Services Ltd | Construction | 2020 |
| Premium Heating Solutions Limited | Construction | 2021 |
| Presaldot Ltd | Other services | 2022 |
| Prestige Paws Ltd | Wholesale & retail | 2026 |
| Primal Mixed Martial Arts Ltd | Extraterritorial | 2024 |
| Prime (City) Ltd | Construction | 2020 |
| Prime Pools Limited | Construction | 2019 |
| Primrose Cleaning Contractors Limited | Administrative & support | 2017 |
| Pro Basements Limited | Extraterritorial | 2016 |
| Pro Electrician (UK) Ltd | Construction | 2024 |
| Pro Elixir Clinic Ltd | Other services | 2024 |
| Pro Mech Hvac Services Limited | Construction | 2011 |
| Pro-Academy of Football Ltd | Arts & recreation | 2009 |
| Profile Trade Products Limited | Manufacturing | 2010 |
| Proflow Services Ltd | Administrative & support | 2023 |
| Progress Cars Ltd | Transport & logistics | 2019 |
| Progress NOT Perfection Ltd | Manufacturing | 2025 |
| Progress Transport Ltd | Transport & logistics | 2024 |
| Prolag Thermal Limited | Construction | 1998 |
| Promosol Homes Limited | Construction | 2020 |
| Promosol Limited | Construction | 2008 |
| Promotememedia Limited | Information & communication | 2012 |
| Pronaos Project Management Limited | Professional & scientific | 2015 |
| Propad Holdings Ltd | Real estate | 2026 |
| Propagate Group Ltd | Information & communication | 2023 |
| Propertito Limited | Real estate | 2025 |
| Property 84 Limited | Real estate | 2024 |
| Protech Support Services Limited | Information & communication | 2018 |
| Prova Racing Limited | Arts & recreation | 2024 |
| Prowall Drylining Ltd | Construction | 2024 |
| Pure Vision Properties Limited | Real estate | 2022 |
| Purespace Services Ltd | Administrative & support | 2026 |
| Purgo Group Limited | Other services | 2010 |
| PUW Limited | Information & communication | 2023 |
| PX Studios Ltd | Information & communication | 2022 |
| Quailfalcon Homes Limited | Real estate | 2021 |
| Quailfalcon Limited | Manufacturing | 1985 |
| Quailfalcon Management Limited | Real estate | 2026 |
| Quality Care Consultant Services Limited | Health & social care | 2020 |
| Quaria Exteriors Ltd | Construction | 2026 |
| Quartz Capital London Ltd | Financial services | 2019 |
| Qube Interior Solutions Ltd | Construction | 2021 |
| Quest Plumbing and Heating Limited | Construction | 2023 |
| Quetop Consulting Limited | Professional & scientific | 2009 |
| Quickfit Services (Leigh) Ltd | Wholesale & retail | 2011 |
| R & C Utilities Ltd | Construction | 2019 |
| R & D Coins & Collectibles Limited | Wholesale & retail | 2013 |
| R & G Builders Limited | Construction | 2016 |
| R & J Batchelor Limited | Information & communication | 2017 |
| R B Therapy Ltd | Professional & scientific | 2021 |
| R Bailey Roofing Contractors Limited | Construction | 2025 |
| R W Davis Haulage Ltd | Transport & logistics | 2012 |
| R. Syrett Plumbing & Heating Ltd | Construction | 2021 |
| R.D. Jackson Limited | Wholesale & retail | 2009 |
| R.S. Bookbinders Limited | Manufacturing | 1982 |
| Radley Property Limited | Real estate | 2023 |
| Radley Welding Ltd | Construction | 2017 |
| Radon Defence Limited | Mining & quarrying | 2025 |
| RAK TOV Ltd | Real estate | 2016 |
| Rakecraft Limited | Construction | 1993 |
| Rambi Creatives Ltd | Health & social care | 2022 |
| Rampart Legal Services Ltd | Administrative & support | 2013 |
| Range Training Limited | Education | 2026 |