| Perceval Management Limited | Real estate | 2014 |
| Perfect Pickles Ltd | Manufacturing | 2016 |
| Pescott Developments Limited | Construction | 2026 |
| Peter's Music Factory UK Limited | Information & communication | 1994 |
| Petersfield Beauty Aesthetics Ltd | Other services | 2025 |
| Petersfield Carpenters Limited | Construction | 2017 |
| Petersfield Community Radio Ltd | Information & communication | 2018 |
| Petersfield Exhaust & Tyre Services Limited | Wholesale & retail | 2000 |
| Petersfield FPC Limited | Professional & scientific | 2014 |
| Petersfield Joinery Limited | Construction | 1977 |
| Petersfield Museum and Art Gallery Limited | Arts & recreation | 2005 |
| Petersfield Osteopathy Registered Osteopaths Limited | Health & social care | 2023 |
| Petersfield Physiotherapy & Sports Injury Clinic Limited | Health & social care | 2005 |
| Petersfield Self Storage Limited | Extraterritorial | 2009 |
| Petersfield Service Centre Limited | Wholesale & retail | 2012 |
| Petersfield Shakespeare Festival | Arts & recreation | 2017 |
| Petersfield Theatre Group Limited | Arts & recreation | 2008 |
| Petersmead Management Ltd | Professional & scientific | 2023 |
| PF Lewis Limited | Other services | 2022 |
| Phaseo Health Ltd | Professional & scientific | 2024 |
| Phone Ambulance Limited | Wholesale & retail | 2019 |
| Physical Mind London Limited | Professional & scientific | 2018 |
| Pigeon Hill Limited | Professional & scientific | 2016 |
| Piggott Place (Sheet) Management Company Limited | Households | 2011 |
| Piku and Lulu Co. Ltd | Hospitality | 2024 |
| Pink COW Services Ltd | Professional & scientific | 2001 |
| Pinnacle Renovation Projects Limited | Construction | 2014 |
| PIT Stop Corporation Ltd | Wholesale & retail | 2024 |
| PJS Catering Ltd | Hospitality | 2026 |
| PJT Research Limited | Professional & scientific | 2010 |
| PKC: Peacekeeping Consultancy Limited | Public administration | 2013 |
| Plastics Recycling Publications Limited | Information & communication | 2022 |
| Platinum Recover and Repair Limited | Water & waste | 2026 |
| Platinum Sensors Limited | Real estate | 2003 |
| Plentville Limited | Real estate | 1974 |
| Plumb & Plaster Ltd | Construction | 2025 |
| Pmag (Trading) Ltd | Wholesale & retail | 2022 |
| PMB Automotive Enthusiasts Limited | Wholesale & retail | 2023 |
| Pmnk Ltd | Wholesale & retail | 2023 |
| PMR Recruitment Ltd | Administrative & support | 2024 |
| PMS Services Limited | Administrative & support | 2001 |
| Podium Policy & Communications Limited | Professional & scientific | 2023 |
| Points Well Made Ltd | Information & communication | 2026 |
| Pole Apart Builders Ltd | Construction | 2025 |
| Polo House Petersfield Limited | Administrative & support | 2012 |
| Pooks Investments Limited | Real estate | 2024 |
| Portbury Limited | Professional & scientific | 2022 |
| Portchester Youth Theatre Limited | Arts & recreation | 2014 |
| Portofinos Limited | Hospitality | 2005 |
| Portsmouth Freeholds Ltd | Extraterritorial | 2021 |
| Portsmouth Self Storage Limited | Extraterritorial | 2009 |
| Positive Futures Coaching Ltd | Professional & scientific | 2020 |
| Positively MAD Hampshire Limited | Education | 2007 |
| Povey Penfold & Naylor Limited | Real estate | 2015 |
| Powell Allen Limited | Arts & recreation | 2006 |
| Poynton Plumbing and Maintenance Limited | Construction | 2009 |
| Ppcs Developments Limited | Financial services | 2024 |
| Ppcs Properties Limited | Extraterritorial | 1981 |
| Practical Solution (England) Ltd | Construction | 2017 |
| PRD Norton Limited | Financial services | 2025 |
| Precision Poles Ltd | Construction | 2023 |
| Precision Productions Ltd | Arts & recreation | 2026 |
| Prendo Simulations Limited | Information & communication | 2008 |
| Pretend Software Ltd | Information & communication | 2025 |
| Prime Performance Partners Limited | Professional & scientific | 2018 |
| Primula Road Development Limited | Real estate | 2025 |
| Pro Plastering and Building Ltd | Construction | 2025 |
| Pro Pods Co-Living Limited | Real estate | 2019 |
| Project Lambda Limited | Administrative & support | 2007 |
| Promo Push Limited | Information & communication | 2010 |
| Property Rentals (UK) Ltd | Real estate | 2014 |
| Protea Square Limited | Real estate | 2024 |
| Proveritas Ltd | Professional & scientific | 2019 |
| Provincial DAB Ltd | Information & communication | 2023 |
| Provolve Limited | Information & communication | 2004 |
| Psych LAB Limited | Health & social care | 2021 |
| Publishing on the Web Limited | Information & communication | 2004 |
| Puffin Fabrication Ltd | Manufacturing | 2021 |
| Puffin Plastics Ltd | Manufacturing | 2013 |
| Puffin Plastics Retail Ltd | Manufacturing | 2019 |
| Pulsar Productions Limited | Arts & recreation | 1971 |
| Pumping Station Lane Ltd | Households | 2026 |
| Punk Padel Limited | Wholesale & retail | 2022 |
| Purbeck Blue Consultancy Ltd | Professional & scientific | 2024 |
| Purbeck Blue Ltd | Professional & scientific | 2007 |
| Purr Point Productions Ltd | Information & communication | 2024 |
| PWC Flooring & Maintenance Ltd | Construction | 2011 |
| PY Paul Younane Limited | Arts & recreation | 2015 |
| Qest International Ltd | Health & social care | 2015 |
| Qpes SW Ltd | Construction | 2026 |
| Quality Land Services Limited | Administrative & support | 2007 |
| Quality Mouldings Limited | Manufacturing | 2010 |
| Quando Analytics Limited | Professional & scientific | 2026 |
| Quantum Trading Education Limited | Education | 2015 |
| Quantum Trading Software Limited | Information & communication | 2014 |
| Quiet Productions Limited | Other services | 1990 |
| Quinn Building and Development Ltd | Construction | 2025 |
| Qvisum Limited | Information & communication | 2014 |
| R & S Johnson Limited | Wholesale & retail | 2014 |
| R H Energy Limited | Professional & scientific | 2003 |