| Pivot Topco Limited | Financial services | 2022 |
| Pixel Hosts Limited | Information & communication | 2017 |
| Pixel HUT Ltd | Information & communication | 2020 |
| Pixel Print Labs Ltd | Wholesale & retail | 2025 |
| Pizza Capital Ltd | Hospitality | 2024 |
| Pizza Roman Ltd | Hospitality | 2023 |
| PJ Coatings Limited | Manufacturing | 2017 |
| PJC Installations Limited | Construction | 2019 |
| Pjmm Industries Limited | Professional & scientific | 2023 |
| PJO Contractors Limited | Construction | 2017 |
| PJS Interim Ltd | Professional & scientific | 2011 |
| PJW Creations Ltd | Other services | 2020 |
| PK Auto Sales and Repairs Ltd | Wholesale & retail | 2019 |
| PK Locksmith Service Ltd | Manufacturing | 2016 |
| PKN Accountants Ltd | Professional & scientific | 2012 |
| Plague Island Games Ltd | Manufacturing | 2020 |
| Plaken Joinery Limited | Construction | 2005 |
| Plan Building Services Ltd | Construction | 2019 |
| Planet Clean Ltd | Real estate | 2022 |
| Planet Link Limited | Manufacturing | 2023 |
| Planning Partners Ltd | Construction | 2018 |
| Plant House Ltd | Agriculture & fishing | 2025 |
| Plastering Direct Ltd | Construction | 2023 |
| Plastic Card Impressions Ltd | Manufacturing | 2013 |
| Plastic Free Pantry Limited | Wholesale & retail | 2018 |
| Platinum Lodges Ltd | Manufacturing | 2022 |
| Platinum Lounge & Bar Ltd | Hospitality | 2019 |
| Platinum Plumbing and Property Services Ltd | Construction | 2021 |
| Platinum Reach Properties Ltd | Real estate | 2021 |
| Platton Consultancy Ltd | Financial services | 2025 |
| Playforth Properties Ltd | Real estate | 2023 |
| Playmania Limited | Arts & recreation | 2005 |
| PLAYWORLD316 Limited | Arts & recreation | 2014 |
| Pleiades Universe Ltd | Other services | 2026 |
| PLG Procurement Solutions Limited | Professional & scientific | 2025 |
| PLQ Developments Limited | Real estate | 2026 |
| PLS Environmental Services Ltd | Professional & scientific | 2014 |
| Plumb Fusion Limited | Construction | 2021 |
| Plumbstore Ltd | Wholesale & retail | 2018 |
| Plus One Bookkeeping Services Limited | Administrative & support | 2003 |
| Plus Taxi Ltd | Transport & logistics | 2025 |
| PM Property LAB Ltd | Real estate | 2026 |
| PMB Property Services Limited | Real estate | 2022 |
| PME Enterprises Limited | Transport & logistics | 2018 |
| PMG Formwork Ltd | Construction | 2026 |
| PMM Residential Ltd | Real estate | 2023 |
| PND Elite Garden Rooms Limited | Construction | 2025 |
| PND Pointing Specialists Ltd | Construction | 2023 |
| PNI Realty Limited | Real estate | 2023 |
| PNM Limited | Financial services | 2002 |
| Pocket Labs Ltd | Information & communication | 2023 |
| Pocket Services Limited | Hospitality | 2017 |
| Pocket Sports Bars Ltd | Hospitality | 1986 |
| Podcast Tech Ltd | Information & communication | 2021 |
| Poeticoding Ltd | Information & communication | 2014 |
| Poker Events Ltd | Real estate | 2021 |
| Pokilee Limited | Wholesale & retail | 2022 |
| Pokéwheels Ltd | Wholesale & retail | 2021 |
| Poland Open END Ltd | Financial services | 2022 |
| Polish Craft & Artisanship Ltd | Wholesale & retail | 2025 |
| Polish Pro Detailing Limited | Wholesale & retail | 2023 |
| Polish Voice FM Ltd | Information & communication | 2023 |
| Polska Szkolka Pilkarska C.I.C. | Arts & recreation | 2016 |
| Polskill Ltd | Information & communication | 2022 |
| Pondicherry HQ Ltd | Hospitality | 2025 |
| Pontefract Chiropractic Clinic Ltd | Health & social care | 2011 |
| Pool Valeting Limited | Wholesale & retail | 2016 |
| Poplar Developments Limited | Construction | 2023 |
| Poplar Ventures Ltd | Real estate | 2020 |
| Pops Summer Camp Limited | Other services | 2010 |
| Portabella (South Yorkshire) Limited | Administrative & support | 2014 |
| Portable Imaging Diagnostics Ltd | Health & social care | 2024 |
| Porto Mielno Ltd | Real estate | 2022 |
| Portside Project Controls Ltd | Construction | 2023 |
| Portunus Homes Ltd | Construction | 2021 |
| Portwest Clothing Limited | Wholesale & retail | 1988 |
| Poseidon Underwater Hockey Limited | Manufacturing | 2024 |
| Positive Meters Limited | Administrative & support | 2016 |
| Positive Movement CIC | Health & social care | 2026 |
| Positive Sums Limited | Manufacturing | 2014 |
| Posneg Holdings Limited | Manufacturing | 2025 |
| Postify Limited | Administrative & support | 2016 |
| Postilla Ltd | Professional & scientific | 2021 |
| Postlethwaite Services Ltd | Manufacturing | 2020 |
| Potasz Ltd | Transport & logistics | 2018 |
| Potato Hub Ltd | Hospitality | 2023 |
| Potential Difference Technologies Ltd | Professional & scientific | 2022 |
| Potter Grill House Limited | Hospitality | 2023 |
| Potter Hill Management Ltd | Construction | 2025 |
| Potter Hill Pizza Limited | Hospitality | 2023 |
| Potter Pizza House Ltd | Hospitality | 2026 |
| Pound City Plus Limited | Wholesale & retail | 2019 |
| POW Management Company Limited | Real estate | 2014 |
| Powell's Motors Ltd | Wholesale & retail | 2022 |
| Power and Rail Services Ltd | Construction | 2024 |
| Power for Women Self Defence CIC | Education | 2024 |
| Power of Woman Justyna Konkel Ltd | Professional & scientific | 2026 |
| Powerpoint Lighting & Electrical Ltd | Construction | 2023 |
| PP Janus Ltd | Wholesale & retail | 2024 |
| PPD Systems Ltd | Construction | 2017 |