| Paediatric Physio Limited | Information & communication | 2011 |
| PAG Landscapes & Paving Ltd | Administrative & support | 2016 |
| PAG Transport Ltd | Transport & logistics | 2025 |
| Pageprop Limited | Health & social care | 2002 |
| Pain Pals GY CIC | Health & social care | 2024 |
| Palace Plain Orthodontic Practice Limited | Health & social care | 2018 |
| Palace World Leisure Limited | Extraterritorial | 2000 |
| Palatial Estates Limited | Real estate | 2024 |
| Palatial Investments Limited | Financial services | 2021 |
| Palatial Leisure Limited | Arts & recreation | 1993 |
| Palmer Building (East Anglia) Limited | Construction | 2013 |
| Pamelas Restaurant Ltd | Hospitality | 2019 |
| Pamic Limited | Wholesale & retail | 2020 |
| PAN Media Holdings Ltd | Financial services | 2023 |
| PAN Publicity Limited | Professional & scientific | 1982 |
| Pang's Spa UK Ltd | Other services | 2018 |
| Paradisegy Limited | Other services | 2022 |
| Paragon Automotive Ltd | Wholesale & retail | 2026 |
| Parallel Fabrication Limited | Manufacturing | 2021 |
| Parcan Builders Limited | Construction | 2012 |
| Parker Developments (East Anglia) Limited | Real estate | 2010 |
| Parkers Packs Limited | Other services | 2024 |
| Parks Supply Ltd | Hospitality | 2015 |
| Parkside Lettings Limited | Real estate | 2019 |
| Partnerships for Renewables Limited | Energy | 2008 |
| Partridge Pipe Fitting Services Ltd | Construction | 2019 |
| Past and Present Maintenance Ltd | Administrative & support | 2025 |
| Past and Present Memorials CIC | Administrative & support | 2025 |
| Pasteur Retail Park Limited | Construction | 2013 |
| Paterson Properties (Lowestoft) Limited | Real estate | 2012 |
| Patricia Barnard Limited | Health & social care | 2016 |
| Patterson Productions (Norwich) Limited | Arts & recreation | 2016 |
| Pattisons (Anglia) Ltd | Water & waste | 2015 |
| Paul Allen Promotions Ltd | Arts & recreation | 2003 |
| Paul Rackham ADR Ltd | Transport & logistics | 2020 |
| Paul Thain Haulage Limited | Transport & logistics | 2014 |
| Paul Welch Electrical Limited | Construction | 2010 |
| Pauls Bacon (Great Yarmouth) Limited | Real estate | 2001 |
| Pauls Cabs Limited | Transport & logistics | 2018 |
| PAWS4THOUGHT Pet Tags Ltd | Manufacturing | 2015 |
| Payne Process & Pipeline Services Limited | Professional & scientific | 2014 |
| Payton Engineering Limited | Manufacturing | 2007 |
| PBH PUB Ltd | Hospitality | 2024 |
| PDJ Installations Limited | Construction | 2004 |
| Pdlf Trading Limited | Other services | 2020 |
| Peace & Co Staircase Limited | Manufacturing | 2018 |
| Peacham Ltd | Wholesale & retail | 2012 |
| PEAK46 Ltd | Professional & scientific | 2009 |
| Pearl Developments Norfolk Holdings Ltd | Real estate | 2025 |
| Pearl Hair and Beauty Ltd | Other services | 2018 |
| Peartree Business Centre Limited | Households | 1986 |
| Peers Premier Apartments Limited | Real estate | 2011 |
| Pefa Property Ltd | Real estate | 2019 |
| Pelagian Ltd. | Information & communication | 2002 |
| Pell and Co Spirits Limited | Manufacturing | 2016 |
| Pembroke Avenue Ltd | Manufacturing | 2022 |
| Pembroke Mortgages Ltd | Financial services | 2020 |
| Pentagon Fire and Security Systems Ltd | Administrative & support | 2019 |
| Perceptive Heating Ltd | Construction | 2024 |
| Perellis Engineering Ltd | Professional & scientific | 2025 |
| Perfect Pixel Media Ltd | Professional & scientific | 2018 |
| Perfect Pixel Plus Limited | Manufacturing | 2021 |
| Perfect Plumbing & Heating Services Ltd | Construction | 2009 |
| Perfect Poop Limited | Health & social care | 2019 |
| Perfected Solutions Ltd | Manufacturing | 2019 |
| Performance Analysis Sporting Solutions Ltd | Information & communication | 2015 |
| Performance Plus (East Anglia) Limited | Professional & scientific | 2003 |
| Perry Construction & Developments Limited | Construction | 2017 |
| Perry Decorations Limited | Construction | 2017 |
| Persuasive Limited | Professional & scientific | 2013 |
| Pertwee & Back,Limited | Wholesale & retail | 1929 |
| Pet Chalet Cattery Limited | Administrative & support | 2016 |
| Peter Shepherd Engineering Limited | Professional & scientific | 2015 |
| Peterley Management Limited | Administrative & support | 1987 |
| Peters Moorehurst Ltd | Real estate | 2013 |
| Peterton Services Ltd | Real estate | 2003 |
| Peto Svcs Limited | Mining & quarrying | 2013 |
| Petra MOO Moos Ltd | Professional & scientific | 2025 |
| Petraitis Ltd | Transport & logistics | 2018 |
| PEX Investments Limited | Real estate | 1976 |
| Pfleiderer EWP Limited | Administrative & support | 2024 |
| Pfleiderer Wood Limited | Administrative & support | 2024 |
| PFR Holdings Limited | Financial services | 2025 |
| PFR Investments Limited | Real estate | 2020 |
| PG Apps Ltd | Education | 2023 |
| PH East Anglia Ltd | Professional & scientific | 2019 |
| Phantom Marine Ltd | Manufacturing | 2017 |
| Phetalz Capital Investments Ltd | Real estate | 2021 |
| Phetalz Ltd | Manufacturing | 2013 |
| Phetalz Travel & Photography Ltd | Professional & scientific | 2024 |
| Philip Haynes Ltd | Professional & scientific | 2014 |
| Philip Robert Sharpe Ltd | Extraterritorial | 2025 |
| Philpot Asset Holdings Limited | Real estate | 2019 |
| Phoenix Alarms and Safety Services Limited | Professional & scientific | 1998 |
| Phoenix Groundworks Ltd | Construction | 2024 |
| Phoenix Karate Schools Limited | Education | 2011 |
| Phoenix Technical Services Limited | Manufacturing | 2015 |
| Piledrive Ltd | Construction | 2021 |
| Pilson Group Limited | Agriculture & fishing | 1999 |
| Pinnacle Arts and Exporters Ltd | Wholesale & retail | 2019 |