| Pollyb Bespoke Ltd | Professional & scientific | 2019 |
| Pondhead Farms Ltd | Agriculture & fishing | 2019 |
| Poplar Property Ltd | Real estate | 2005 |
| Poppyfields Retail Park Limited | Real estate | 2018 |
| Poppylicious Ltd | Wholesale & retail | 2019 |
| Portland Denture Clinic and Laboratory Limited | Manufacturing | 2022 |
| Portland Plaice Limited | Hospitality | 2009 |
| Porvair Filtration Group Limited | Manufacturing | 1966 |
| Porvair Filtration Limited | Professional & scientific | 1995 |
| Porvair Sciences Limited | Manufacturing | 1986 |
| Positive Life Experiences Limited | Administrative & support | 2026 |
| Positive People Solutions Ltd | Professional & scientific | 2015 |
| Powermount Limited | Construction | 2002 |
| PPK63 Ltd | Professional & scientific | 2026 |
| Practical Bookkeeping Limited | Professional & scientific | 2019 |
| Pragmatic Family Ltd | Professional & scientific | 2025 |
| Praxela Developments LLP | | 2008 |
| Precious Building Ltd | Construction | 2024 |
| Predictive Machines Ltd | Professional & scientific | 2021 |
| Prekaris Hairs Ltd | Other services | 2025 |
| Premier Electrical (Anglia) Ltd | Manufacturing | 2019 |
| Premier Vending UK Ltd | Administrative & support | 2018 |
| Premier Voice Data Limited | Information & communication | 2017 |
| Prenish Properties Ltd | Construction | 2025 |
| Preponderant Ltd | Professional & scientific | 2023 |
| Presenter Friends Ltd | Professional & scientific | 2021 |
| Presswell Ltd | Wholesale & retail | 2026 |
| Prestige Build & Design Norfolk Limited | Construction | 2023 |
| Prestige Motor Sales Ltd | Wholesale & retail | 2026 |
| Prestige Norfolk Ltd | Financial services | 2017 |
| Prestige Pave & Resin Ltd | Construction | 2025 |
| Prestige Systems Worldwide Ltd | Professional & scientific | 2019 |
| Prestigeroof Ltd | Construction | 2024 |
| Prestlea Services Limited | Professional & scientific | 2023 |
| Preston Quality Support Ltd | Professional & scientific | 2025 |
| Pretty Little Rose Ltd | Other services | 2019 |
| Price & Co Limited | Professional & scientific | 2014 |
| Priestley Removals (East Anglia) Limited | Transport & logistics | 2015 |
| Prime Carers Limited | Health & social care | 2026 |
| Prime Disaster Response Ltd | Administrative & support | 2012 |
| Prime Edge Roofing Limited | Construction | 2026 |
| Primus Inter Pares Ltd | Information & communication | 2008 |
| Princess Theatre Limited | Administrative & support | 2020 |
| Principle Joinery Ltd | Manufacturing | 2023 |
| Principle Property Group Limited | Real estate | 2020 |
| Priors of West Lynn Ltd | Wholesale & retail | 2002 |
| Priory Cottages Limited | Households | 2018 |
| Priory Woodlands LLP | | 2025 |
| Pro Economizer Ltd | Professional & scientific | 2021 |
| Pro Plumbing Services Ltd | Construction | 2024 |
| Pro Tech Experts UK Ltd | Wholesale & retail | 2022 |
| Pro-Heat GAS Services Ltd | Construction | 2010 |
| Procomms Civil Engineering Ltd | Construction | 2026 |
| Procraftynation Ltd | Wholesale & retail | 2024 |
| Proctor Roofing Limited | Extraterritorial | 2014 |
| Proctor UK Limited | Construction | 2006 |
| Prodir Limited | Wholesale & retail | 1992 |
| Production 7 Videos Limited | Information & communication | 2020 |
| Professional Aesthetic Enhancements Ltd | Other services | 2019 |
| Professional Excellence Consulting LLP | | 2005 |
| Professional Excellence Property Services Ltd | Hospitality | 2026 |
| Professionals Care for YOU Limited | Health & social care | 2021 |
| Proficio Solutions Limited | Professional & scientific | 2004 |
| Progress Living Ltd | Hospitality | 2023 |
| Project Peacock Ltd | Other services | 2016 |
| Promos 22 Ltd | Other services | 2021 |
| Propads Safety Group Ltd | Manufacturing | 2025 |
| Property and Building Solutions Limited | Construction | 2025 |
| Property Construction (West Norfolk) Limited | Construction | 2013 |
| Property Transaction Data Ltd | Information & communication | 2023 |
| Property Vision (Norwich) Ltd | Real estate | 2021 |
| Protected Worldwide Ltd | Health & social care | 2026 |
| Protocol and Canine Security Services Limited | Administrative & support | 2003 |
| PRS Trade Limited | Wholesale & retail | 2025 |
| PRS Welding and Fabrication Ltd | Manufacturing | 2022 |
| PS Adaptations Ltd | Construction | 2019 |
| Psteel Engineering Ltd | Manufacturing | 2016 |
| Pulse Electrics Ltd | Construction | 2020 |
| Pupa Ltd | Transport & logistics | 2018 |
| Pupil Tracking Limited | Information & communication | 2002 |
| Pure Check Limited | Professional & scientific | 2023 |
| Pure Recovery Clinic Ltd | Health & social care | 2026 |
| Pure Survival Ltd | Education | 2025 |
| Pure Temp Ltd | Construction | 2024 |
| Purfleet Management Flats Limited | Households | 2008 |
| Purity Water Limited | Wholesale & retail | 2004 |
| Purple Chairs Limited | Construction | 2019 |
| Purple Door HR Limited | Administrative & support | 2008 |
| Purple Pumpkin Hoodies Ltd | Wholesale & retail | 2022 |
| Purple Shield (Building) Ltd | Construction | 2022 |
| Purrrcafe Ltd | Hospitality | 2023 |
| Push With Purpose CIC | Education | 2025 |
| PW Heating Ltd | Construction | 2018 |
| Pyramid Catering Ltd | Hospitality | 2014 |
| Q Technical Consultancy Ltd | Professional & scientific | 2023 |
| Qlik Strategies Limited | Information & communication | 2024 |
| Qualitops (UK) Limited | Wholesale & retail | 2009 |
| Quality Roofing Services (East Anglia) Limited | Construction | 2023 |
| Qualprop Limited | Construction | 2015 |
| Quantumatica Ltd | Information & communication | 2018 |