| Peck & Oak Limited | Manufacturing | 2026 |
| PEJ Aviation Services Ltd | Professional & scientific | 2019 |
| Pelanyk Ltd | Real estate | 2020 |
| Peleman Industries Ltd | Professional & scientific | 1994 |
| Pelham Consulting Limited | Professional & scientific | 2016 |
| Pendulum Financial Management Ltd | Financial services | 2005 |
| Penfold Public Works (Sussex) Limited | Extraterritorial | 2005 |
| Penfold Verrall Employee Trustee Limited | Administrative & support | 2020 |
| Penfold Verrall Holdings Limited | Administrative & support | 2014 |
| Penfold Verrall Limited | Construction | 1972 |
| Penhellis Holdings Ltd | Real estate | 2026 |
| Penkd Ltd | Hospitality | 2025 |
| Pennies and Feathers Limited | Manufacturing | 2016 |
| Pennside Partners UK Limited | Administrative & support | 2016 |
| Pennthorpe School Trust Limited | Education | 1964 |
| Pennywatch Ltd | Education | 2024 |
| Penrod Limited | Information & communication | 2007 |
| Pentagon Tooling Limited | Manufacturing | 2009 |
| Pentatom Limited | Professional & scientific | 2014 |
| Pentiles A-Team Limited | Construction | 2011 |
| People and Their Brilliance Ltd | Professional & scientific | 1999 |
| PEP World Ltd | Wholesale & retail | 2026 |
| Peppersgate Management Company Limited | Households | 1998 |
| Peregrine Parkfield Ltd | Real estate | 2021 |
| Peregrine Properties Limited | Construction | 2012 |
| Peregrine Thornside Ltd | Construction | 2023 |
| Perestrello Holdings Limited | Financial services | 2023 |
| Perez Lopez Ltd | Professional & scientific | 2021 |
| Perfect Level Limited | Administrative & support | 2004 |
| Perform Property Ltd | Real estate | 2017 |
| Performance Edge Partners Ltd | Professional & scientific | 2014 |
| Peritus Consulting Limited | Professional & scientific | 2010 |
| Perlocutio Limited | Professional & scientific | 2009 |
| Perry Drainage Services Limited | Water & waste | 2026 |
| Pet Priorities Ltd | Other services | 2024 |
| PETCHY7CONSULTING Ltd | Administrative & support | 2024 |
| Peter's Farm (Landco) Limited | Real estate | 2025 |
| Petulia Property Ltd | Households | 2022 |
| Petworth MOT Centre Ltd. | Wholesale & retail | 2003 |
| PGF Consulting Ltd. | Professional & scientific | 2011 |
| PH Steel Ltd | Construction | 2012 |
| Phantom Gunsmiths Ltd | Manufacturing | 2016 |
| Pharmaffairs Ltd | Professional & scientific | 2014 |
| Pharmaqueen Ltd | Health & social care | 2020 |
| Phazar Limited | Professional & scientific | 2015 |
| Phelan-Mota Ltd | Professional & scientific | 2026 |
| Philip Jarvis Estate Agent Limited | Administrative & support | 2013 |
| Phillips Management Consultants LLP | | 2001 |
| Phoenix & Dragon Enterprises Ltd | Real estate | 2024 |
| Phoenix Adbuild Ltd | Construction | 2024 |
| Phoenix Cleaning & Support Services Ltd | Administrative & support | 2022 |
| Phoenix House Freehold Company Limited | Households | 2021 |
| Phoenix Pole Studios Ltd | Arts & recreation | 2024 |
| Phone Friendly Limited | Wholesale & retail | 2019 |
| Physiofit Online Limited | Health & social care | 2016 |
| Physique Solutions Limited | Other services | 2014 |
| Piazzetta Ltd | Hospitality | 2024 |
| Pickled EGG Ltd | Administrative & support | 2003 |
| Pickr Ltd | Wholesale & retail | 2025 |
| Picturedesk Ltd | Information & communication | 2024 |
| PIE Works Limited | Hospitality | 2011 |
| Pied a Terre Adventures Limited | Wholesale & retail | 2010 |
| Pigs Ears Beers Limited | Wholesale & retail | 2011 |
| Pilcot Construction Ltd | Construction | 2013 |
| Pilkington Building Plastics Ltd | Construction | 2017 |
| Pilot Training Consulting Ltd | Professional & scientific | 2018 |
| Pimlico IP Ltd | Financial services | 2025 |
| Pimms Village Recovery Limited | Other services | 2025 |
| PIN Point Surveys Limited | Professional & scientific | 2019 |
| Pinchy Theatre Ltd | Arts & recreation | 2023 |
| Pine Hygiene Limited | Water & waste | 2007 |
| Pink Door Consulting Services Ltd | Professional & scientific | 2023 |
| Pink Panther Accounting Ltd | Professional & scientific | 2023 |
| Pink Rabbits D2D Ltd | Financial services | 2026 |
| Pinnacle Fires Ltd | Construction | 2018 |
| Pinnacle IT Solutions Limited | Information & communication | 2005 |
| Pioneer Campervans Limited | Manufacturing | 2017 |
| PIP Coffee Ltd | Hospitality | 2026 |
| Pipe Systems Limited | Construction | 1998 |
| Piqax Technology Ltd | Information & communication | 2015 |
| Piries Bar Limited | Hospitality | 2003 |
| Piron Recycling Limited | Wholesale & retail | 2017 |
| Piron Telecom Limited | Wholesale & retail | 2017 |
| Pitango Productions Limited | Other services | 2026 |
| Pitch Talent Group Limited | Professional & scientific | 2025 |
| Pitchcom Limited | Information & communication | 2012 |
| Pitchcom.Com Limited | Information & communication | 2012 |
| Pitchwood Stables Limited | Construction | 2026 |
| Pitchy Breath Theatre Company CIC | Arts & recreation | 2019 |
| Pivot Consulting Group Ltd | Professional & scientific | 2018 |
| Pixel Peach Ltd | Professional & scientific | 2019 |
| Pizza Trullo Limited | Hospitality | 2021 |
| PJH Business Services Limited | Professional & scientific | 2011 |
| Placement Partners Ltd | Administrative & support | 2024 |
| PLAN2B Limited | Extraterritorial | 2011 |
| Planb (Holdings) Limited | Financial services | 2012 |
| Planb Corporation Limited | Professional & scientific | 2011 |
| Planb Professional Services Limited | Administrative & support | 2008 |
| Planetary Practitioners Limited | Information & communication | 2024 |
| Plantrade Limited | Professional & scientific | 1992 |