| Park View Lodge Residents Association Limited | Households | 1996 |
| Parlava Ltd | Arts & recreation | 2025 |
| Parris Holdings Ltd | Financial services | 2023 |
| Partnered Thinking Limited | Professional & scientific | 2014 |
| Party Ace Limited | Information & communication | 2014 |
| Parviz Khalilpour Building & Civil Engineering Limited | Construction | 2014 |
| Pass the Parcel Limited | Households | 2017 |
| Paul Bennett Tiling Limited | Construction | 2016 |
| PB Carbon Limited | Real estate | 2016 |
| PB Runner Ltd | Arts & recreation | 2011 |
| PCF Developments Limited | Construction | 2013 |
| PCF Projects LLP | | 2014 |
| PD Gardens Ltd | Administrative & support | 2014 |
| Peak Brickwork & Construction Ltd | Construction | 2026 |
| Pebble Beach Spa LLP | | 2025 |
| Peccadillo Ltd | Information & communication | 2005 |
| Pedalthink Limited | Hospitality | 2006 |
| Peking Take Away (Hastings) Limited | Hospitality | 2021 |
| Pengellys Fish Services Limited | Wholesale & retail | 2021 |
| Penland Management Limited | Households | 2006 |
| People Hub (HR) Limited | Administrative & support | 2014 |
| People Within Place CIC | Wholesale & retail | 2025 |
| Peppy Conrad Limited | Real estate | 1997 |
| Percy Walker & Co LLP | | 2019 |
| Perry Walker Limited | Professional & scientific | 2018 |
| Peter Gaimster Associates Ltd | Professional & scientific | 2022 |
| Peter Luke Designworks Ltd | Professional & scientific | 2019 |
| Peter Manning Carpentry Ltd | Construction | 2014 |
| Peter Muller Broadcast Ltd | Information & communication | 2014 |
| Petry Ride CAB Ltd | Transport & logistics | 2024 |
| PH Fish LLP | | 2005 |
| Phantastic Ltd | Wholesale & retail | 2021 |
| Pheniastyle Limited | Financial services | 2013 |
| PI2 Consulting Ltd | Professional & scientific | 2021 |
| PIE Holdings Ltd | Hospitality | 2019 |
| Pilgrims Rest Properties LLP | | 2013 |
| Pinch Productions Ltd | Manufacturing | 2018 |
| Pine Lodge Homes Ltd | Households | 2004 |
| Pinehurst SDS Limited | Information & communication | 2008 |
| Pinetree Hill Management Limited | Households | 2021 |
| Pink Elephant Scaffolding Services Ltd | Construction | 2016 |
| Pink Tree Frog Productions Limited | Information & communication | 2006 |
| Pinpoint Events Ltd | Administrative & support | 2007 |
| Pinpoint Studio Limited | Administrative & support | 2017 |
| Piper Bell Investments LLP | | 2015 |
| Piper Bell Property Limited | Real estate | 2019 |
| Pizza TRE Amici Limited | Hospitality | 2025 |
| PJB Building Limited | Construction | 2019 |
| Plainsight Ltd | Information & communication | 2019 |
| PLAN2DESIGN Limited | Information & communication | 2014 |
| Play Your Music Ltd | Education | 2019 |
| Play.Sussex Ltd | Hospitality | 2026 |
| Players Sports Bar Ltd | Hospitality | 2025 |
| Playing the Race Card CIC | Arts & recreation | 2024 |
| Plaza Trading Hastings Limited | Administrative & support | 2011 |
| Pleasant Mount Ltd | Information & communication | 2023 |
| PLM RTM Company Limited | Households | 2005 |
| PM Property Maintenance (South) Limited | Construction | 2011 |
| Poké Passion Ltd | Wholesale & retail | 2021 |
| Pole Position Window Cleaning Ltd | Administrative & support | 2019 |
| Pompom & Twiddle Limited | Wholesale & retail | 2010 |
| Porters Wine Bar Limited | Hospitality | 2011 |
| Powdermixer Ltd | Professional & scientific | 2020 |
| Ppbc Limited | Construction | 2023 |
| Ppty 1 Ltd | Real estate | 2020 |
| PQ Specialists and Administration Ltd | Other services | 2016 |
| PR Mums Ltd | Professional & scientific | 2022 |
| Practically Wild Ltd | Education | 2025 |
| Pranddt Ltd | Manufacturing | 2019 |
| Precision Roofing & Leadwork Limited | Construction | 2022 |
| Preferred Peptides UK Ltd | Wholesale & retail | 2024 |
| Premier Property Maintenance Sussex Limited | Construction | 2024 |
| Premiere UK AE Limited | Financial services | 2014 |
| Premiere UK FS Limited | Financial services | 2010 |
| Premiere UK IS Limited | Financial services | 2010 |
| Premium Luxe Limited | Wholesale & retail | 2024 |
| Prestige Industrial Ltd | Construction | 2022 |
| Preston Cottage Limited | Hospitality | 2022 |
| Primary Analytics & Advertising Ltd | Professional & scientific | 2025 |
| Primary Creative Ltd | Professional & scientific | 2025 |
| Prime Currencies Limited | Financial services | 2023 |
| Priory Croft Management Limited | Real estate | 2003 |
| Priory Road Aesthetic and Beauty Clinic Ltd | Professional & scientific | 2020 |
| Priory Road Freehold Company Ltd | Households | 2014 |
| Prishang Limited | Hospitality | 2018 |
| Pro Event Solutions Limited | Extraterritorial | 2016 |
| Pro Sport Surfaces UK Ltd | Construction | 2021 |
| PRODUCTS1 Ltd | Other services | 2026 |
| Project Art Works | Arts & recreation | 2004 |
| Project Art Works Trading Ltd | Arts & recreation | 2023 |
| Project Meliora Ltd | Arts & recreation | 2025 |
| Project Rewild CIC | Education | 2019 |
| Project Yonder Holdings Ltd | Wholesale & retail | 2022 |
| Project Yonder IP Ltd | Wholesale & retail | 2022 |
| Project Yonder Ltd | Wholesale & retail | 2020 |
| Prometheus Film Productions Ltd | Professional & scientific | 2021 |
| Promlux Ltd | Wholesale & retail | 2025 |
| Property of the Lost Limited | Wholesale & retail | 2016 |
| Property Select Limited | Real estate | 2001 |
| Props and States Ltd | Real estate | 2022 |