| Piper Invest Ltd | Other services | 2015 |
| Pipers Vale Consultants Ltd | Professional & scientific | 2019 |
| Pippa Mullan Ltd | Professional & scientific | 2019 |
| Pippa Murphy Ltd | Wholesale & retail | 2019 |
| Pita Pocket Express Limited | Hospitality | 2025 |
| Pittore Limited | Construction | 2025 |
| PIX Transmissions Europe Ltd | Wholesale & retail | 2013 |
| Pixelprime Studios Ltd | Extraterritorial | 2026 |
| Pixie Breaks Ltd | Hospitality | 2024 |
| Pizza Ipswich Ltd | Hospitality | 2025 |
| Pizza World EN Ltd | Hospitality | 2019 |
| PJ Geary Ltd | Manufacturing | 2013 |
| PJ Roofing Suffolk Limited | Construction | 2014 |
| PJA Design & Support Ltd | Professional & scientific | 2025 |
| PJA Photography Ltd | Extraterritorial | 2018 |
| Pjamalabs Ltd | Wholesale & retail | 2018 |
| PJB Garden Maintenance Ltd | Administrative & support | 2018 |
| PJF Drinks Ltd | Professional & scientific | 2023 |
| PJM GAS Engineering Ltd | Professional & scientific | 2019 |
| PJS Haulage Services Ltd | Transport & logistics | 2014 |
| Pjts Property Ltd | Real estate | 2024 |
| PK Property Partnership Ltd | Real estate | 2026 |
| Pk&S Solutions Ltd | Information & communication | 2019 |
| Pking Media Ltd | Information & communication | 2020 |
| Place Associates Limited | Professional & scientific | 2020 |
| Plainview Consulting Limited | Professional & scientific | 2023 |
| Plamko Trans Ltd | Transport & logistics | 2024 |
| Plan a Consult Ltd | Construction | 2024 |
| Plan a Engineering Ltd | Construction | 2023 |
| Plan-It Consulting Limited | Information & communication | 2010 |
| Planet SIX Ltd | Professional & scientific | 2024 |
| Planet Village Limited | Education | 2012 |
| Plant and Tools Ltd | Wholesale & retail | 2022 |
| Plantlink Recruitment Ltd | Administrative & support | 2025 |
| Plast Group Ltd | Financial services | 2024 |
| Platastudio Ltd | Wholesale & retail | 2025 |
| Platinum Plant Site Services Ltd | Manufacturing | 2012 |
| Platinum Swarm LP | | 2024 |
| Platinum Taxis and Private Hire Limited | Transport & logistics | 2025 |
| Playful Paws Ipswich Ltd | Other services | 2026 |
| Playsafe ID Ltd | Information & communication | 2023 |
| Playtec Ltd | Information & communication | 2026 |
| Playtime Limited | Administrative & support | 1990 |
| Plessas Group Limited | Transport & logistics | 2021 |
| Plexol Property Ltd | Real estate | 2026 |
| Pliply Ltd | Information & communication | 2025 |
| Plot Manage Limited | Administrative & support | 2016 |
| Plotex Ltd | Real estate | 2025 |
| Plots, Plans and Properties Limited | Real estate | 2001 |
| Plug Smart Ltd | Manufacturing | 2014 |
| Plum Creative Limited | Other services | 2019 |
| Plum Tree Consulting Limited | Professional & scientific | 2025 |
| Plumbtrades Online Ltd | Wholesale & retail | 2019 |
| Plumbtube Limited | Construction | 2025 |
| Pluriventures LLP | | 2019 |
| Plus Eight Limited | Information & communication | 1995 |
| Plus Nine Limited | Manufacturing | 2000 |
| Plus Relocation Services Ltd | Administrative & support | 2011 |
| Plush Mobile Toilets Limited | Administrative & support | 2005 |
| Plush Networks Limited | Information & communication | 2020 |
| Plush Supreme Cleaning Limited | Administrative & support | 2026 |
| Plusmart Ltd | Wholesale & retail | 2025 |
| Plutus Real Estate Acquisition and Management Ltd | Real estate | 2023 |
| PM Property Group Limited | Real estate | 2025 |
| PM Trade G Ltd | Other services | 2018 |
| PMC Fencing Ltd | Construction | 2023 |
| PMC Group (Holdings) Limited | Financial services | 2017 |
| Pmgh Property Ltd | Real estate | 2022 |
| PMH Contracts Limited | Construction | 2002 |
| PMS Suffolk Ltd | Construction | 2023 |
| PMS Transport Ltd | Transport & logistics | 2018 |
| Pmsh East Anglia Limited | Health & social care | 2020 |
| Pnfm Consulting Ltd | Other services | 2023 |
| PNZ Business Ltd | Wholesale & retail | 2025 |
| Podium Property Ltd | Real estate | 2021 |
| Podpea Ltd | Information & communication | 2012 |
| Poffin Ltd | Real estate | 2022 |
| Point to Point Clothing Limited | Manufacturing | 2019 |
| Pokemom Collectibles Ltd | Wholesale & retail | 2026 |
| POL Building Ltd | Construction | 2024 |
| Polar Bear Holdings Ltd | Wholesale & retail | 2022 |
| Polestar Truck Wash Limited | Administrative & support | 2026 |
| Policybee (Group) Ltd | Financial services | 2021 |
| Polish Community Hub CIC | Information & communication | 2022 |
| Poljot Properties Limited | Real estate | 2024 |
| Pollard Scaffolding Ltd | Other services | 2020 |
| Pollux Ltd | Transport & logistics | 2025 |
| Polychemtech Ltd | Information & communication | 2008 |
| Polygon Maintenance Ltd | Administrative & support | 2023 |
| Polynest Art Ltd | Wholesale & retail | 2025 |
| Pomme ET Poire Ltd | Real estate | 2023 |
| Pomona Fruits Limited | Wholesale & retail | 2009 |
| Pondus Property Ltd | Real estate | 2020 |
| Ponnus Collections Limited | Wholesale & retail | 2025 |
| Pooleco Ltd | Information & communication | 2017 |
| Poop Bags Ltd | Wholesale & retail | 2026 |
| POP Chorus Ltd | Other services | 2014 |
| POP HIT Factory Limited | Information & communication | 2016 |
| POP M Trans Limited | Transport & logistics | 2019 |
| Poppies Care Farm CIC | Health & social care | 2014 |