| P. Kaczmarek Ltd | Construction | 2025 |
| P. Kempsell Services Ltd | Construction | 2017 |
| P.A.Id Strategies Limited | Professional & scientific | 2014 |
| P.A.J. Plumbing Limited | Construction | 2019 |
| P.A.M Removals Ltd | Transport & logistics | 2022 |
| P.C. Wiring Limited | Information & communication | 2010 |
| P.Cz. Transport Ltd | Transport & logistics | 2023 |
| P.E.R Precision Engineering Ltd | Manufacturing | 2003 |
| P.F. Trustee Ltd | Professional & scientific | 2018 |
| P.J.Wilkinson Specialist Decorators Limited | Construction | 2021 |
| P.Land (Development Consultants) Ltd | Administrative & support | 2024 |
| P.S. Tibbett Limited | Construction | 2003 |
| P.W.F. Advantage Limited | Administrative & support | 2000 |
| P23 Solutions Ltd | Other services | 2023 |
| P2D Books Limited | Manufacturing | 2018 |
| PA & PD Construction Ltd | Construction | 2019 |
| PA Holdco Limited | Financial services | 2026 |
| Pace London Management Limited | Professional & scientific | 2012 |
| Pack Leader Fitness Ltd | Wholesale & retail | 2025 |
| Packaging Materials Direct Limited | Extraterritorial | 1998 |
| Packaging Materials Limited | Extraterritorial | 1998 |
| Paco Property Investment Ltd | Real estate | 2014 |
| Pactora Ltd | Professional & scientific | 2026 |
| Padam Bros Ltd | Transport & logistics | 2026 |
| Padbury House (Management) Company Limited | Households | 1982 |
| Paddocks Capital Ltd | Real estate | 2026 |
| Padel & PAR Ltd | Arts & recreation | 2025 |
| Padel World Bedford Limited | Arts & recreation | 2025 |
| Padelarc Limited | Construction | 2026 |
| Padeol Limited | Wholesale & retail | 2002 |
| Painfree Potential Ltd | Wholesale & retail | 2014 |
| Pakistan Investment Company Ltd | Wholesale & retail | 2020 |
| PAL MAL Estates Ltd | Real estate | 2025 |
| Palmbrook Holdings Limited | Agriculture & fishing | 2016 |
| Palmbrook Property Developments Limited | Construction | 2024 |
| Palmer Investments Limited | Extraterritorial | 1961 |
| Palmers Conveyancing Limited | Professional & scientific | 1988 |
| Palmers Solicitors Bedford Limited | Professional & scientific | 1988 |
| Palmertalk Media Ltd | Information & communication | 2024 |
| Pals Global Services Limited | Transport & logistics | 2025 |
| Palush Building Ltd | Construction | 2021 |
| PAN Tech Solutions Ltd | Information & communication | 2013 |
| Panakeia (UK) Ltd | Health & social care | 2014 |
| Panda Estate Management (Notts) Ltd | Real estate | 2025 |
| Panda Plush Limited | Wholesale & retail | 2019 |
| Panda Stone Limited | Real estate | 2022 |
| Pane & Pizza Ltd | Wholesale & retail | 2024 |
| Pane D'Arte Ltd | Manufacturing | 2020 |
| Paneros Group Limited | Financial services | 2022 |
| Panisafe LLP | | 2011 |
| Pankhurst Consultancy Ltd | Administrative & support | 2004 |
| Panther Electrical Ltd | Construction | 2021 |
| Panther Syndicate Limited | Real estate | 2025 |
| Paper Street Consultants Limited | Manufacturing | 2002 |
| Papertree Services Ltd | Arts & recreation | 2014 |
| Papillon Rouge Ltd | Extraterritorial | 2006 |
| PAR Electrical Contractors Ltd | Construction | 2014 |
| PAR Freight Services Limited | Transport & logistics | 2006 |
| Paradigm Real Estate Ltd | Real estate | 2024 |
| Paradise Spice Ltd | Hospitality | 2021 |
| Paradisehair Ltd | Professional & scientific | 2022 |
| Paradpo Ltd | Professional & scientific | 2018 |
| Paragon Building Specialists Ltd | Construction | 2013 |
| Paragon Electronics Limited | Manufacturing | 1991 |
| Parallax Golf LAB Ltd | Information & communication | 2025 |
| Parallaxis Limited | Professional & scientific | 2016 |
| Parasitology Services Ltd | Health & social care | 2005 |
| Pardica Hair CUT Salon Ltd | Other services | 2019 |
| Park Farm Developments Limited | Real estate | 2001 |
| Park Hill Associates Limited | Real estate | 2011 |
| Park Hill Management (Ampthill) Limited | Households | 2013 |
| Park Road Garage Ltd | Wholesale & retail | 2012 |
| Park View Flats (Wellingborough) Management Limited | Real estate | 1987 |
| Parke Holdings Ltd | Hospitality | 2023 |
| Parker’S Landscaping Group Ltd | Construction | 2022 |
| Parkinson Risk Consulting Limited | Professional & scientific | 2010 |
| Parklands Residents (Bedford) Limited | Households | 2001 |
| Parklo Construction Limited | Construction | 2018 |
| Parkview Lodge LLP | | 2010 |
| Parramint Consulting Limited | Professional & scientific | 2018 |
| Parrish Investments Ltd | Construction | 2015 |
| Parrock Engineering Ltd | Professional & scientific | 2024 |
| Parrott Automotive Ltd | Wholesale & retail | 2012 |
| Parrott Construction Holdings Limited | Financial services | 2019 |
| Parrott Construction Limited | Construction | 1968 |
| Parrott Holdings Limited | Professional & scientific | 1993 |
| Parsec IT Limited | Information & communication | 2007 |
| Parsonage Farm Wingrave Management Limited | Real estate | 2010 |
| Parsonson Brothers,Limited | Real estate | 1930 |
| Parsonsons Limited | Professional & scientific | 1995 |
| PARTLANDER4X4 Limited | Education | 2019 |
| Partnerships for Change Consultancy Limited | Education | 2014 |
| Partridge Property Solutions Ltd | Households | 2022 |
| Parts RK Limited | Other services | 2008 |
| Parwood James Company Limited | Real estate | 1973 |
| Paston Ltd | Construction | 2019 |
| PAT Cosgrave Racing Limited | Arts & recreation | 2018 |
| Pat's Bangers NO Mash Ltd | Arts & recreation | 2021 |
| Pataky Ltd | Transport & logistics | 2021 |
| Pathmaker Advisory Limited | Professional & scientific | 2026 |