| Prestige Pavers Limited | Construction | 2012 |
| Prestige Recruitment Services Ltd | Administrative & support | 2018 |
| Pretty Good Business Ltd | Extraterritorial | 2023 |
| Prettys Law Limited | Extraterritorial | 2009 |
| Prettys Limited | Professional & scientific | 1995 |
| Prettys Secretarial Services Limited | Extraterritorial | 2010 |
| Prettys Solicitors LLP | | 2016 |
| Pretzie Ltd | Wholesale & retail | 2014 |
| Pride Healthcare Limited | Health & social care | 2024 |
| Prideaux Associates Limited | Professional & scientific | 2011 |
| Primal RAW Limited | Wholesale & retail | 2017 |
| Primary Care Consortium Limited | Health & social care | 2003 |
| Primary Homecare Limited | Health & social care | 2002 |
| Prime (JB) Limited | Real estate | 2022 |
| Prime (RC) Ltd | Real estate | 2022 |
| Prime Axis Business Ltd | Wholesale & retail | 2025 |
| Prime Bright Ltd | Wholesale & retail | 2025 |
| Prime Cutz Hadleigh Limited | Other services | 2026 |
| Prime Haven Property Group Ltd | Real estate | 2025 |
| Prime Path Consulting Group Ltd | Professional & scientific | 2025 |
| Prime Space Cleaning Limited | Administrative & support | 2026 |
| Prime Time Accounting (Cessation) Limited | Extraterritorial | 2015 |
| Prime Verse Ltd | Wholesale & retail | 2025 |
| Prime Way Solutions Limited | Health & social care | 2024 |
| Primecon Limited | Administrative & support | 2011 |
| Primedrive Limited | Transport & logistics | 2015 |
| Primenest Ecommerce Ltd | Wholesale & retail | 2025 |
| Primero Developments Ltd | Real estate | 2013 |
| Primetel Consulting Ltd | Information & communication | 2018 |
| Primo Manufacturing Limited | Manufacturing | 1988 |
| Primo Organics Limited | Manufacturing | 2016 |
| Primrose Walk Ltd | Households | 2025 |
| Primrose Workshops Limited | Manufacturing | 2019 |
| Primus Clinical Research Consultants Limited | Professional & scientific | 2016 |
| Print 4 U Ltd | Manufacturing | 2008 |
| Print Innovative Technology Limited | Manufacturing | 2001 |
| Print IT (Ipswich) Ltd | Manufacturing | 2025 |
| Print IT Your Way Ltd | Manufacturing | 2024 |
| Priority Business Limited | Administrative & support | 1990 |
| Priors Grange 2 Management Company Limited | Households | 2019 |
| Priors Grange Management Company Limited | Households | 2016 |
| Priory Meadows (Hadleigh) Limited | Households | 2019 |
| Priory Pioneers Limited | Arts & recreation | 2003 |
| Prism Aerial Arts Ltd | Arts & recreation | 2023 |
| Prism Alliance Ltd | Real estate | 2023 |
| Pritchard Cleaning Services Limited | Administrative & support | 2017 |
| Prito Health Ltd | Health & social care | 2023 |
| Private Care Suffolk Ltd | Health & social care | 2025 |
| Private Executive Travels Limited | Administrative & support | 2015 |
| Prize PIG Competitions Limited | Other services | 2025 |
| Prize Plum Properties Ltd | Real estate | 2019 |
| Prizehawk Limited | Information & communication | 1991 |
| Prizm Ltd | Administrative & support | 2025 |
| Pro Advance Cleaners Limited | Administrative & support | 2025 |
| Pro Build (East) Ltd | Construction | 2018 |
| Pro CV Transport Ltd | Transport & logistics | 2025 |
| Pro Engineering (Ipswich) Limited | Manufacturing | 2019 |
| Pro Financial Solutions Ltd | Professional & scientific | 2022 |
| Pro Guard Roofing & Guttering Ltd | Construction | 2026 |
| Pro Locksmith Solution Ltd | Manufacturing | 2023 |
| Pro Racket Tours Ltd | Administrative & support | 2025 |
| Pro Site Construction Ltd | Construction | 2021 |
| Pro Site SES Limited | Construction | 2020 |
| Pro Tax Accountancy Services Limited | Professional & scientific | 2025 |
| Pro Tax Plus Ltd | Professional & scientific | 2018 |
| Pro Work Group Ltd | Construction | 2025 |
| Pro-Fitness Martlesham Limited | Arts & recreation | 2008 |
| Pro-Flat Specialist Services Ltd | Construction | 1976 |
| Pro-L Driving School Ltd | Transport & logistics | 2025 |
| Pro-Let-Uk Ltd | Hospitality | 2023 |
| Pro-Metal Holdings (EA) Limited | Financial services | 2012 |
| Pro-Metal Manufacturing Limited | Manufacturing | 1998 |
| Pro-Pak Limited | Manufacturing | 2010 |
| Pro-Well Digital Limited | Information & communication | 2025 |
| PRO2CALL Recruitment Ltd | Administrative & support | 2026 |
| Proactive Inspections Ltd | Construction | 2015 |
| Proactive Logistics Limited | Transport & logistics | 2012 |
| Proassist Travel Ltd | Administrative & support | 2024 |
| Probate Solutions Limited | Water & waste | 2026 |
| Probiz Avenue Ltd | Real estate | 2024 |
| Procare Staffing Limited | Administrative & support | 2022 |
| Processing and Packaging Machinery Limited | Wholesale & retail | 2008 |
| Proclean (East) Ltd | Other services | 2014 |
| Prodara Ltd | Information & communication | 2026 |
| Product & Process Solutions Limited | Professional & scientific | 2025 |
| Product Value Ltd | Manufacturing | 2017 |
| Production Science Limited | Information & communication | 1999 |
| Proedge IT Solutions Ltd | Wholesale & retail | 2025 |
| Prof-Space Ltd | Professional & scientific | 2024 |
| Professional Drivers Service Limited | Wholesale & retail | 2015 |
| Professional Garage Services Ltd | Wholesale & retail | 2019 |
| Professional Mindset Coaching Ltd | Professional & scientific | 2023 |
| Proficient Community Care Services Limited | Health & social care | 2019 |
| Proficient Health Care Ltd | Health & social care | 2015 |
| Proficio Capital Ltd | Water & waste | 2016 |
| Profile Consultants Limited | Administrative & support | 2002 |
| Profile Security Group Ltd | Financial services | 2000 |
| Profile Security Services Limited | Other services | 1989 |
| Proformations Limited | Professional & scientific | 2026 |
| Progistics NRG Ltd | Wholesale & retail | 2023 |