| Papaj Construction Ltd | Construction | 2015 |
| Papyrus Press Ltd | Information & communication | 2024 |
| Paradigm Talent Ltd | Professional & scientific | 2024 |
| Paradox Housing Limited | Real estate | 2023 |
| Paradox Management Limited | Administrative & support | 2020 |
| Paragon Home Services Limited | Construction | 2020 |
| Paralegal Solutions Ltd | Professional & scientific | 2025 |
| Paramount M&E Ltd | Professional & scientific | 2020 |
| Paramount Realty Ltd | Real estate | 2026 |
| Parcel IQ Limited | Transport & logistics | 2025 |
| Park Lodge Ltd | Hospitality | 2020 |
| Parkanaur Group Ltd | Information & communication | 2022 |
| Parkanaur Limited | Financial services | 2012 |
| Parkhurst Court Airspace Limited | Real estate | 2022 |
| Parkline Investments Limited | Real estate | 1959 |
| Parneet Constructions Limited | Construction | 2025 |
| Partridge Solutions Ltd | Real estate | 2022 |
| Partydogslondon Limited | Other services | 2026 |
| Pastries Paradise Ltd | Manufacturing | 2026 |
| Patek Management Ltd | Professional & scientific | 2023 |
| PATH2AI Ltd | Information & communication | 2026 |
| Pathway Collective Ltd | Professional & scientific | 2024 |
| Pathway Homes Limited | Real estate | 2021 |
| Paujac Properties Ltd | Real estate | 2024 |
| Paul Court Residents Association Limited | Households | 1971 |
| Paul Henry Investments Limited | Real estate | 2020 |
| Paul Karslake Fine Art Limited | Professional & scientific | 2008 |
| Paul Kurtz Ltd | Construction | 2025 |
| Paul Michael Design and Advertising Limited | Professional & scientific | 2014 |
| Paul Palmer (Essex) Ltd | Health & social care | 2019 |
| Paul Vaughan Property Ltd | Construction | 2003 |
| Paul's Developments Ltd | Real estate | 2016 |
| Paulian Packaging Limited | Wholesale & retail | 1993 |
| Pavilion Writers Group Ltd | Information & communication | 2019 |
| Paws and Claws (Essex) Ltd | Other services | 2018 |
| Paws in Doors (Southend) Limited | Other services | 2021 |
| Pawzzles UK Limited | Wholesale & retail | 2024 |
| PAY & Drop Ltd | Wholesale & retail | 2024 |
| Payot Ltd | Wholesale & retail | 2007 |
| Payroll Angel Limited | Professional & scientific | 2013 |
| PBB Property Ltd | Real estate | 2024 |
| PC Products Limited | Manufacturing | 2018 |
| PDJ Services Limited | Administrative & support | 2018 |
| Pe'Colo UK Limited | Real estate | 2025 |
| Peaceful Healthcare Ltd | Administrative & support | 2023 |
| Peak Aerospace Limited | Professional & scientific | 2017 |
| Peak Forme Ltd | Manufacturing | 2021 |
| Peak Horizon Web Limited | Wholesale & retail | 2020 |
| Peaky Barber Lounge Limited | Other services | 2019 |
| Pebble Shores Limited | Information & communication | 2009 |
| Pebbles Guest House Limited | Hospitality | 2020 |
| Pedeeoshos Global Services Ltd | Other services | 2025 |
| Peefer Limited | Wholesale & retail | 2016 |
| Pembury Road Westcliff Management Limited | Households | 2010 |
| PEN Performance Ltd | Wholesale & retail | 2026 |
| Penny Woods Clinic Limited | Health & social care | 2026 |
| Pentalogarithm Ltd | Information & communication | 2025 |
| Peppermint Property Leigh Limited | Real estate | 2014 |
| Perfect Music Company Limited | Professional & scientific | 2007 |
| Perfect Technique Aesthetics and Training Limited | Other services | 2022 |
| Perfection Cleaning Ltd | Administrative & support | 2019 |
| Performance Training Consultancy Limited | Construction | 2014 |
| Perpetual Help Ltd | Health & social care | 2022 |
| Persistent Transport Ltd | Transport & logistics | 2023 |
| Personal Wealth Matters (Estate Planning) Ltd | Professional & scientific | 2025 |
| Personal Wealth Matters Limited | Financial services | 2023 |
| Peter Theunis Ltd | Professional & scientific | 2023 |
| Peterwell Technologies Ltd | Wholesale & retail | 2018 |
| Pethuel House Limited | Public administration | 2023 |
| Petrol PUG Classics Limited | Wholesale & retail | 2007 |
| Pets & Polish Ltd | Administrative & support | 2018 |
| PFS Group Holdings Limited | Financial services | 2021 |
| PFS Group Limited | Professional & scientific | 1998 |
| Pftw Ltd | Information & communication | 2024 |
| Pgah Ltd | Wholesale & retail | 2025 |
| PGW Tyres and Servicing Ltd | Wholesale & retail | 2025 |
| PH1 Holdings Ltd | Real estate | 2020 |
| PHG Group Ltd | Financial services | 2024 |
| Philip J Bird Auto Services Limited | Wholesale & retail | 2003 |
| Philip J Holdings Limited | Financial services | 2025 |
| Philip J Properties Limited | Real estate | 2025 |
| Phoenix Fire Doors and Carpentry Ltd | Construction | 2019 |
| Phoenix Place (North Hykeham) Management Company Limited | Households | 2014 |
| Phoenix Preschool Limited | Education | 2014 |
| Phone & Voopoo Ltd | Wholesale & retail | 2022 |
| Photographer Liam Gillan Ltd | Professional & scientific | 2024 |
| Photoplan Bookings Limited | Professional & scientific | 2023 |
| Piak Ltd | Real estate | 2025 |
| Pickl Ltd | Information & communication | 2020 |
| Piece of Mind Counselling and Psychotherapy Ltd | Health & social care | 2023 |
| Pieno-Lleno Ltd | Hospitality | 2016 |
| Pier Asset Management Limited | Extraterritorial | 2012 |
| Pier Hill Ltd | Wholesale & retail | 2024 |
| Pier Management Limited | Real estate | 2003 |
| Pieri Consultants Limited | Professional & scientific | 2019 |
| Pigs Bay Distillery Limited | Professional & scientific | 2011 |
| Pinegrove Limited | Real estate | 1999 |
| Pink Cleaners London Ltd | Construction | 2013 |
| Pinkys Beauty Limited | Other services | 2018 |
| Pinnacle Cleaning Solutions Ltd | Administrative & support | 2026 |