| Peach Ecology Limited | Other services | 2015 |
| Peach Heating Ltd | Construction | 2024 |
| Peacock Management Company Limited | Households | 2004 |
| Peak Progression Ltd | Construction | 2025 |
| Peak Training Solutions Limited | Real estate | 2001 |
| Pear Tree Health Ltd | Health & social care | 2023 |
| Peclet Limited | Professional & scientific | 2009 |
| Peel Court (Chippenham) Management Company Limited | Households | 2007 |
| Pelham Court (Broad Chalke) Management Company Limited | Households | 1996 |
| Pelozet Limited | Agriculture & fishing | 2019 |
| Pembroke Events Limited | Arts & recreation | 2026 |
| Pembroke Fields (Block 1) Limited | Households | 2009 |
| Pembroke Fields Management Company Limited | Households | 2009 |
| Pembroke Gate (Shaftesbury) Management Company Limited | Households | 2010 |
| Pembroke Park (Wilton) Management Limited | Administrative & support | 1994 |
| PEN Bethan (Falmouth) Management Company Limited | Households | 2022 |
| Penaluna GRP Laminatings Ltd | Construction | 2018 |
| Penelope's Administration Services Ltd | Administrative & support | 2018 |
| Peninsula (Machynys) Management Company Limited | Households | 2014 |
| Penning Power & Water Limited | Manufacturing | 2001 |
| Pensions Connect Ltd | Information & communication | 2024 |
| Pensions Partnership Efrbs Trustees Limited | Financial services | 2009 |
| Pensions Partnership Sipp Trustees Limited | Financial services | 2005 |
| Pensions Partnership Sipp Trustees NO 2 Limited | Financial services | 2013 |
| Pensions Partnership Ssas Trustees Limited | Financial services | 2006 |
| Pento Ltd | Information & communication | 2025 |
| Penton Salisbury Limited | Extraterritorial | 1997 |
| Pentworth Properties Ltd | Real estate | 2025 |
| Peppy Life Ltd | Administrative & support | 2016 |
| Pepys Services Ltd | Agriculture & fishing | 2003 |
| PER Ardua Associates Limited | Professional & scientific | 2008 |
| PER Ardua Holdings Limited | Professional & scientific | 2021 |
| Perdy Foster Maternity Education and Support Limited | Education | 2026 |
| Peregrinecare Ltd | Health & social care | 2026 |
| Perlins Land and Sea Community Interest Company | Health & social care | 2023 |
| Perpetual Estates Limited | Real estate | 2025 |
| Perranvale Publishing Ltd | Professional & scientific | 2010 |
| Perriwood Renovations Ltd | Construction | 2026 |
| Perseus Software Limited | Information & communication | 2015 |
| Pest Control Universal Limited | Administrative & support | 2007 |
| Petalchemy Ltd | Extraterritorial | 2023 |
| Pete Dunn Life Limited | Financial services | 2024 |
| Pete Farmer Performance Racing Limited | Manufacturing | 1999 |
| Peter Booth Trees Limited | Agriculture & fishing | 2021 |
| Peter Charles Equestrian Limited | Wholesale & retail | 2009 |
| Peter COX Decorating Limited | Construction | 2019 |
| Peter Cutler Decorating Ltd | Construction | 2008 |
| Peter Kirkwood Consultancy Limited | Professional & scientific | 2013 |
| Peter Lamb Limited | Agriculture & fishing | 1988 |
| Peter Roberts Roofing Limited | Construction | 2022 |
| Peter Staines Refrigeration Limited | Wholesale & retail | 2003 |
| Peter Thompson Consultancy Limited | Administrative & support | 2020 |
| Petro-Gebo Ltd. | Professional & scientific | 2018 |
| Pettag (Alresford) Limited | Wholesale & retail | 2011 |
| PFB Recruitment Ltd. | Administrative & support | 2011 |
| PGE Holdings Ltd | Real estate | 2020 |
| Pgms Limited | Administrative & support | 1999 |
| PH Realisations 2020 Limited | Administrative & support | 2013 |
| Pharmaceutical Equipment Validation (PEV) Limited | Professional & scientific | 1998 |
| Pharmtect Limited | Wholesale & retail | 2017 |
| Phase Two Interiors Limited | Manufacturing | 2022 |
| Phaseq Limited | Information & communication | 2017 |
| PHAZE4 Ltd | Information & communication | 2025 |
| Phep Ltd | Construction | 2012 |
| Phil Miles Limited | Agriculture & fishing | 2014 |
| Phil Small Marquees Ltd | Administrative & support | 2008 |
| Phil Smith DRY Cleaners Limited | Wholesale & retail | 2015 |
| Phil Smith Hair Limited | Other services | 2012 |
| Philbrook Limited | Real estate | 2017 |
| Philip Hawkins Workshop Limited | Manufacturing | 2003 |
| Philip Sidford Limited | Agriculture & fishing | 2004 |
| Phillips Electrical (Sussex) Ltd | Construction | 2013 |
| Phillips Safety & Logistic Solutions Ltd | Professional & scientific | 2020 |
| Philo Ltd | Information & communication | 2001 |
| Phinix Holdings Limited | Financial services | 2024 |
| Phipson Limited | Wholesale & retail | 1982 |
| Phoenix 2324 Limited | Hospitality | 2024 |
| Phoenix Agri Ltd | Agriculture & fishing | 2026 |
| Phoenix Ashes Ltd | Construction | 2026 |
| Phoenix Building and Development Limited | Real estate | 2005 |
| Phoenix Geospatial Limited | Information & communication | 2025 |
| Phoenix Lifting Systems Limited | Manufacturing | 1995 |
| Phoenix Precision Engineering Limited | Manufacturing | 2005 |
| Phoenix Pro AV Ltd | Wholesale & retail | 2017 |
| Phoenix Toys Limited | Manufacturing | 2024 |
| Phoenix Wessex Ltd | Hospitality | 2025 |
| Phonemerchant Limited | Information & communication | 2010 |
| Photinia Security Ltd | Administrative & support | 2011 |
| Photonics Leadership Limited | Other services | 2001 |
| Physiofactor Limited | Health & social care | 2003 |
| Picaro Consulting Ltd | Professional & scientific | 2020 |
| Pick Homes Limited | Construction | 2007 |
| Pickett Carpentry Limited | Construction | 2014 |
| Pickett Management Ltd | Real estate | 2023 |
| Pickett's Holdings Ltd | Real estate | 2021 |
| Pickford Green Lane (Coventry) Management Company Limited | Households | 2022 |
| Pickwick Holdings Ltd | Professional & scientific | 2017 |
| Picture Perfect Training Limited | Education | 2024 |
| PIE & Piper Ltd | Manufacturing | 2021 |
| Pied Piper Properties Limited | Real estate | 2024 |