| Panda Later Life Lending Limited | Financial services | 2018 |
| Pandella BO Ltd | Wholesale & retail | 2024 |
| Pandemonium Ltd | Arts & recreation | 2010 |
| Pandico Ltd | Professional & scientific | 2013 |
| Panometals Co Limited | Wholesale & retail | 2023 |
| Pantheon Financial Limited | Professional & scientific | 2025 |
| Pantr Limited | Professional & scientific | 2026 |
| Papillon Properties Limited | Households | 2018 |
| Pappir Limited | Wholesale & retail | 2016 |
| Para Practitioner Solutions Limited | Health & social care | 2018 |
| Parable Film Co Limited | Information & communication | 2022 |
| Paradigm International Limited | Professional & scientific | 2017 |
| Paradox Inc. Limited | Professional & scientific | 2025 |
| Parava Security Solutions Ltd | Professional & scientific | 2019 |
| Paris Nails (Worthing) Limited | Other services | 2026 |
| Park View Clinic Limited | Health & social care | 2012 |
| Park View QS Ltd | Professional & scientific | 2019 |
| Park Zone Limited | Administrative & support | 2019 |
| Parker & Jones Consultancy Ltd | Administrative & support | 2016 |
| Parker Electrical Services Ltd | Construction | 2019 |
| Parkfield Court Management Company (Worthing) Limited | Real estate | 2011 |
| Parking and Security Solutions Ltd | Real estate | 2018 |
| Parking Shop Direct Limited | Wholesale & retail | 2022 |
| Parkside 97RTM Co Ltd | Households | 2025 |
| Parkside Management (Worthing) Limited | Other services | 1990 |
| Parkview Capital Limited | Professional & scientific | 2017 |
| Parlour Marquees Ltd | Administrative & support | 2025 |
| Parsons ROW Company Limited | Hospitality | 1986 |
| Partaction Limited | Professional & scientific | 1998 |
| Partner Line Global Ltd | Transport & logistics | 2025 |
| Partners in Creation Limited | Professional & scientific | 2015 |
| Partners in Wine Limited | Wholesale & retail | 2020 |
| Parts Marketing Ltd | Wholesale & retail | 2010 |
| Patch Bridge Moorings Limited | Administrative & support | 2002 |
| Patrice Calvet U.K. Ltd | Wholesale & retail | 1983 |
| Patrick Leycester Holdings Limited | Financial services | 2025 |
| Patriot Group Limited | Administrative & support | 1999 |
| Paul Austen Carpentry Limited | Manufacturing | 2012 |
| Paul Collins Carpentry Contractors Limited | Construction | 2011 |
| Paul Duncliffe Plumbing and Heating Limited | Construction | 2006 |
| Paul Harmer Photography Limited | Professional & scientific | 2006 |
| Paul Linehan Consulting Ltd | Other services | 2009 |
| Paul Mayer Electrical Limited | Construction | 2014 |
| Paul Mcbride Building Contractor Limited | Construction | 2009 |
| Paul R Palmer Limited | Professional & scientific | 2011 |
| Paul.Challis+Associates Limited | Extraterritorial | 2015 |
| Pave Health Ltd | Health & social care | 2023 |
| Pavey & Co. Ltd | Financial services | 2014 |
| Pavilion Digital Marketing Limited | Information & communication | 2015 |
| Pavilion Finance Limited | Professional & scientific | 2010 |
| Pavilion Flooring Limited | Other services | 2017 |
| Pavilion Grabs Ltd | Transport & logistics | 2026 |
| PAX in Motion Limited | Information & communication | 2021 |
| Payments Recruitment Limited | Administrative & support | 2013 |
| Payne Adjusting Limited | Financial services | 2002 |
| PB Inclusive Coaching Ltd | Education | 2025 |
| PB Plastering and Decorating Services Ltd | Construction | 2024 |
| Pb&D Limited | Information & communication | 2023 |
| PBS Finance Limited | Extraterritorial | 2013 |
| PBS Group Berkshire Ltd | Administrative & support | 2020 |
| PBS Group Holdings Limited | Administrative & support | 2011 |
| PCA Investments Limited | Real estate | 2019 |
| PCB Sports Limited | Arts & recreation | 2026 |
| Pcdm Limited | Professional & scientific | 2023 |
| PCE25 Ltd | Professional & scientific | 2026 |
| PCS Development Properties Limited | Real estate | 2022 |
| PCS Property Holdings Limited | Financial services | 2022 |
| PCT Solutions Limited | Administrative & support | 2026 |
| Pdpuk Limited | Professional & scientific | 2015 |
| Peachee Limited | Professional & scientific | 2023 |
| Peachy Baby Limited | Extraterritorial | 2019 |
| Peak Physique Sussex Limited | Arts & recreation | 2014 |
| Peak VP Limited | Administrative & support | 2021 |
| Peakphysiquegymsussex Limited | Arts & recreation | 2026 |
| Peanut Chutney Ltd | Manufacturing | 2018 |
| Pearce Solutions Ltd | Administrative & support | 2012 |
| Pearl Building Ltd | Construction | 2022 |
| Pearl Dental Studios Limited | Health & social care | 2011 |
| Pearl Parcels Ltd | Transport & logistics | 2021 |
| Pearly White SX Ltd | Other services | 2025 |
| Pearson's Mews (Worthing) Residents Company Limited | Households | 1986 |
| Pebbleside Limited | Hospitality | 2022 |
| Pecss Ltd | Health & social care | 2025 |
| Peddlewich Limited | Real estate | 1988 |
| Peers Property Investments Limited | Real estate | 2019 |
| Pegus Invest Ltd | Professional & scientific | 2014 |
| Pelican Plumbing Ltd | Construction | 2019 |
| Peloton U.K Ltd | Real estate | 2018 |
| Pembertons (Brighton) Limited | Real estate | 2003 |
| Pembertons (Family) Ltd | Real estate | 2025 |
| Pembertons LLP | | 2024 |
| Pembury Homes Ltd | Hospitality | 2024 |
| Pembury Management Ltd | Real estate | 2025 |
| Penaken Ltd | Health & social care | 2022 |
| Pendennis Holdings Limited | Financial services | 2017 |
| Pendennis Ltd | Health & social care | 2004 |
| Penfold Events Limited | Other services | 2026 |
| Pengarna Ltd | Information & communication | 2020 |
| Pengbro Limited | Information & communication | 2022 |
| Penguin & Ball Limited | Professional & scientific | 2022 |