| Pawar 888 Ltd | Real estate | 2025 |
| PAX Mentis Products (UK) Limited | Manufacturing | 2017 |
| Paxton IT Limited | Information & communication | 2019 |
| PAZ Rafael Limited | Information & communication | 2019 |
| Pbhv Ltd | Professional & scientific | 2009 |
| Pbts Property Investment Ltd | Real estate | 2022 |
| Pdas Holdings Ltd | Financial services | 2019 |
| Pdas Install Ltd | Manufacturing | 2019 |
| Pdas Proactive Ltd | Transport & logistics | 2019 |
| Pdas Projects Ltd | Transport & logistics | 2021 |
| Pdas Rental Ltd | Transport & logistics | 2019 |
| PDM Recruitment Consultancy Limited | Administrative & support | 2011 |
| Peace Enterprises Ltd | Wholesale & retail | 2023 |
| Peacock Moon Publishing Ltd | Manufacturing | 2021 |
| Pearce Properties & Interiors Limited | Administrative & support | 2017 |
| Pearl Home Ventures Ltd | Real estate | 2021 |
| Pearl of Spices Limited | Hospitality | 2023 |
| Pedley Limited | Arts & recreation | 2011 |
| Peek Associates Ltd | Wholesale & retail | 1998 |
| Peel Design Studio Ltd | Professional & scientific | 2013 |
| Peepal Hospitality Limited | Hospitality | 2025 |
| Pegasus Close (Chilton) Management Company Limited | Households | 2017 |
| Pegasus Removals Ltd | Transport & logistics | 2015 |
| Pembroke EM Hold Co Ltd | Financial services | 2017 |
| Pemlo Properties Limited | Real estate | 2002 |
| Pengate Limited | Professional & scientific | 2009 |
| Pengelly Properties Ltd | Hospitality | 2025 |
| Pennine Search and Survey Limited | Administrative & support | 2004 |
| Penrose Wealth Management Ltd | Financial services | 2018 |
| Pentalinks Investments Ltd | Real estate | 2025 |
| Penyards Property Management Holdings Limited | Extraterritorial | 2013 |
| People Against Dirty Holdings Limited | Financial services | 2015 |
| Pepe Investment Ltd | Real estate | 2025 |
| Perfect 10 Home Services Limited | Administrative & support | 1996 |
| Perfect Lodge and Letting Ltd | Hospitality | 2025 |
| Performance One Engineering Ltd | Wholesale & retail | 2024 |
| Performance Podiatry Ltd | Health & social care | 2016 |
| Performance Strategies (UK) Limited | Professional & scientific | 1999 |
| Performing Sports Limited | Arts & recreation | 2010 |
| Perigon Living Ltd | Hospitality | 2024 |
| Peritia Consultancy UK Ltd | Hospitality | 2021 |
| Peritum Consulting Ltd | Professional & scientific | 2018 |
| Permacote Ltd | Construction | 2023 |
| Perso Solutions Ltd | Real estate | 2017 |
| Personal Payroll Ltd | Professional & scientific | 2017 |
| Pertax Accountancy Ltd | Professional & scientific | 2013 |
| Perth Bidco Limited | Financial services | 2021 |
| Perth Holdco Limited | Financial services | 2021 |
| Perth Midco Limited | Financial services | 2021 |
| Perth Topco Limited | Financial services | 2021 |
| Perturbamus Ltd | Information & communication | 2025 |
| Pervez Consulting Ltd | Information & communication | 2025 |
| Pest WE Forget Ltd | Administrative & support | 2025 |
| Pet Treats Wholesale Limited | Manufacturing | 2011 |
| Peter Ball & Co. Limited | Real estate | 2000 |
| Peter Sefton Golf Services Ltd | Arts & recreation | 2023 |
| Peter Wright Photographer Limited | Professional & scientific | 2014 |
| PFO Enterprises Ltd | Wholesale & retail | 2002 |
| Pharma Choice Ltd | Other services | 2025 |
| Pharmistry Consulting Limited | Professional & scientific | 2015 |
| Pharmout Limited | Professional & scientific | 1998 |
| Pharos Resource Partners Ltd | Administrative & support | 2024 |
| Phase Generation Limited | Construction | 2015 |
| Phase M/E Solutions Limited | Energy | 2008 |
| PHD Sports Consultancy Limited | Professional & scientific | 2015 |
| Phev Ltd | Wholesale & retail | 2019 |
| PHI Aviation UK Limited | Transport & logistics | 2022 |
| Philip Rose Designs Limited | Wholesale & retail | 2018 |
| Phoenix Association Stowarzyszenie Feniks CIC | Administrative & support | 2025 |
| Phoenix Couriers (Basingstoke) Limited | Water & waste | 1989 |
| Phoenix Fire Systems Limited | Construction | 2015 |
| Phoenix Transmissions Limited | Other services | 2003 |
| Phrism Solutions Ltd | Information & communication | 2015 |
| Pickleball Spelthorne Ltd | Arts & recreation | 2025 |
| Pickwick Consulting Ltd | Professional & scientific | 2022 |
| Pigbo Property Ltd | Real estate | 2020 |
| Pilgrim Building Solutions Limited | Construction | 2026 |
| PIN High Solutions Ltd | Professional & scientific | 2025 |
| Pine Ridge Operations Limited | Arts & recreation | 2007 |
| Pine Ridge Property Limited | Arts & recreation | 2007 |
| Pinecroft Investment Limited | Real estate | 2004 |
| Pinewood Gardens (Bagshot) Limited | Households | 1964 |
| Pink Jelly People Consultancy Limited | Professional & scientific | 2019 |
| Pinta Education Limited | Education | 2005 |
| Pinto Healthcare Ltd | Health & social care | 2024 |
| Pistos Ltd | Wholesale & retail | 2019 |
| PIX3LHEAD Limited | Real estate | 2021 |
| Pixel King Limited | Information & communication | 2024 |
| Pixel Pro Printing Ltd | Manufacturing | 2025 |
| Pizza Hub Ltd | Hospitality | 2024 |
| PJK Associates Limited | Financial services | 2002 |
| PJW Global Limited | Transport & logistics | 2020 |
| PK Painting & Decorating Ltd | Construction | 2026 |
| Placr Limited | Information & communication | 2008 |
| Plakris Media Limited | Information & communication | 2026 |
| Planet Ocean Limited | Professional & scientific | 2003 |
| Planet Sputnik Ltd | Manufacturing | 2014 |
| Plansky Ltd | Construction | 2020 |
| Planted Good Limited | Other services | 2022 |
| Plasma Bricks Limited | Construction | 2024 |