| Plan My Nights Ltd | Administrative & support | 2025 |
| Planet Express Transport Limited | Transport & logistics | 2015 |
| Plastrade Ltd | Water & waste | 2014 |
| Platinum Gate Estates Limited | Households | 2026 |
| Platinum Surgical Supplies Ltd | Wholesale & retail | 2024 |
| Pleasing Needles Limited | Other services | 2022 |
| Plumbco (Midlands) Limited | Wholesale & retail | 1984 |
| Plumbco C & C Management Ltd | Construction | 2023 |
| Plumbco Holdings Ltd | Financial services | 2022 |
| Pluta Courier Ltd | Transport & logistics | 2018 |
| PM European Logistics Ltd | Transport & logistics | 2022 |
| Pmfg Ltd | Professional & scientific | 2021 |
| PMI Assets Ltd | Real estate | 2026 |
| PMN Rail Ltd | Construction | 2018 |
| PMP Transport & Removals Ltd | Transport & logistics | 2021 |
| PNL Sales and Marketing Limited | Administrative & support | 2014 |
| Poak'D Ltd | Financial services | 2023 |
| Podington Commercials Ltd | Wholesale & retail | 2011 |
| Point Accountancy (Bedford) Ltd | Professional & scientific | 2015 |
| Point Accountancy Ltd | Professional & scientific | 2000 |
| Pointless Ltd | Extraterritorial | 2012 |
| Poldom Ltd | Construction | 2022 |
| Pollard Creativity Limited | Information & communication | 2010 |
| Pollscaff Ltd | Construction | 2022 |
| Polly PUB Ltd | Hospitality | 2020 |
| Polymer Mimetics Limited | Professional & scientific | 2020 |
| POP UP Day Nursery Ltd | Health & social care | 2024 |
| POP UP Irchester Ltd | Health & social care | 2023 |
| Popat Holdings Ltd | Financial services | 2025 |
| Porter Finance Ltd | Financial services | 2024 |
| Porter Riley Limited | Wholesale & retail | 2016 |
| POS Accessories Limited | Administrative & support | 2017 |
| Positive Stop Limited | Wholesale & retail | 2017 |
| Positive Transportation Ltd | Wholesale & retail | 2025 |
| Potter Family Leisure Group Ltd | Financial services | 2023 |
| Powdat Enamellers Limited | Manufacturing | 1974 |
| Power Clinic Ltd | Health & social care | 2024 |
| Power Performance Ltd | Other services | 2023 |
| Poynton Ryan Ltd | Administrative & support | 2013 |
| Poza Trans Ltd | Transport & logistics | 2013 |
| PP Marketing & Advertising Ltd | Professional & scientific | 2019 |
| PP Musik Ltd | Wholesale & retail | 2019 |
| PPJ Investments LLP | | 2007 |
| Ppme Limited | Professional & scientific | 2023 |
| Ppmo Consultancy Ltd | Information & communication | 2025 |
| PR Rentals Limited | Households | 2023 |
| PR Sports Coaching Ltd | Arts & recreation | 2011 |
| Pragmatic Security Solutions Limited | Administrative & support | 2001 |
| Precise Services Ltd | Transport & logistics | 2010 |
| Precision 3D Solutions Limited | Manufacturing | 2024 |
| Precision Remediation Limited | Professional & scientific | 2026 |
| Preferential Lettings Ltd | Real estate | 2019 |
| Premier Cladding (UK) Limited | Construction | 2011 |
| Premier Event Services Ltd | Hospitality | 2018 |
| Premier Surface Solutions Limited | Construction | 2022 |
| Premium Glass Balustrades Ltd | Construction | 2023 |
| Pressure Teknix Ltd | Water & waste | 2024 |
| Prestage Consulting Solutions Ltd | Information & communication | 2023 |
| Prestige Auto Spaces Ltd | Construction | 2025 |
| Prestige Care Solutions Ltd | Health & social care | 2022 |
| Prestige Conservatory K.W Ltd | Construction | 2023 |
| Prestige Developments Limited | Other services | 2016 |
| Prestige Landscaping & Grounds Maintenance Limited | Administrative & support | 2022 |
| Prestige Motor Works Limited | Wholesale & retail | 2017 |
| Prestige Plastics Holdings Ltd | Professional & scientific | 2014 |
| Prestige Printing (Northants) Limited | Information & communication | 2002 |
| Pretty Amazing Productions Limited | Arts & recreation | 2020 |
| Prifix Limited | Financial services | 2012 |
| Primary PE Specialists Ltd | Education | 2024 |
| Prime Automobiles Ltd | Wholesale & retail | 2016 |
| Prime Brands Direct Limited | Wholesale & retail | 2026 |
| Prime Care Cleaning Ltd | Administrative & support | 2025 |
| Prime Contruction Ltd | Construction | 2025 |
| Prime Kebab Limited | Hospitality | 2024 |
| Prime MOT Station Ltd | Wholesale & retail | 2025 |
| Prime North Retailers Limited | Wholesale & retail | 2025 |
| Prime Project Controls Limited | Administrative & support | 2019 |
| Prime Source Ventures Ltd | Wholesale & retail | 2025 |
| Prime Traders Group Ltd | Wholesale & retail | 2026 |
| Primrose PVT Limited | Health & social care | 2023 |
| Primrose Way Management Company Limited | Real estate | 2020 |
| Principal High Pressure Washing Ltd | Administrative & support | 2023 |
| Principles Salon Limited | Other services | 2017 |
| Principuz Limited | Manufacturing | 2017 |
| Print and Property Maintenance Ltd | Construction | 2017 |
| Print Data Solutions (Holdings) Limited | Financial services | 2016 |
| Print Data Solutions Limited | Wholesale & retail | 1998 |
| Print Data Solutions Paper Sales Limited | Professional & scientific | 2011 |
| Print Data Solutions Property Holdings Limited | Financial services | 2016 |
| Print EM Ltd | Manufacturing | 2020 |
| Printed Power Devices Limited | Information & communication | 2019 |
| Printer Factory Ltd | Manufacturing | 2025 |
| Priority Tunnelling Limited | Construction | 2019 |
| Priscom Healthcare Services Limited | Health & social care | 2019 |
| Pristine Cleaning and Laundry Services Ltd | Administrative & support | 2025 |
| Pristine Power Clean Ltd | Administrative & support | 2020 |
| Pritprop Ltd | Real estate | 2020 |
| Pro Commerce World Limited | Wholesale & retail | 2022 |
| Pro Glass Solutions Ltd | Construction | 2014 |
| Pro K9 Security Ltd | Administrative & support | 2021 |