| P Kane Metals Ltd | Administrative & support | 2008 |
| P MCK Ltd | Construction | 2007 |
| P Quinn & SON Ltd | Hospitality | 2014 |
| P R Inter-Trans Ltd | Transport & logistics | 2014 |
| P&L Covers Limited | Manufacturing | 2007 |
| P&L Worrall Limited | Hospitality | 2015 |
| P&M Tree Care Ltd | Administrative & support | 2025 |
| P&S Property Management Ltd | Real estate | 2024 |
| P. Haughey & Co. Solicitors Ltd | Professional & scientific | 2012 |
| P.Corr Contracts Ltd | Construction | 2020 |
| P.F.I Training Ltd | Professional & scientific | 2003 |
| P.K. Murphy Construction Limited | Construction | 1996 |
| P.M. Fireplaces Limited | Manufacturing | 2002 |
| P.M.Engineering Limited | Manufacturing | 1995 |
| PA Duffy & Co Solicitors (Dungannon) Ltd | Professional & scientific | 2017 |
| Pack Farms Ltd | Agriculture & fishing | 2025 |
| Paco Group Limited | Arts & recreation | 2024 |
| PAL Developments (NI) Limited | Real estate | 2013 |
| Palfinger Ltd | Wholesale & retail | 2020 |
| PAM Services Ltd | Real estate | 2018 |
| Panache Shoe Company Ltd | Wholesale & retail | 2011 |
| Panda INK Cartridges Limited | Wholesale & retail | 2015 |
| Panpig Ltd | Agriculture & fishing | 2013 |
| Park Safety Services Ltd | Administrative & support | 2015 |
| Parklands Veterinary Ltd | Professional & scientific | 2003 |
| Parklands Veterinary Portglenone Ltd | Extraterritorial | 2014 |
| Parkwood Court Ltd | Households | 2020 |
| Party Bikes Ireland Ltd | Administrative & support | 2026 |
| Parvati Ventures Ltd | Real estate | 2024 |
| Paso Properties Ltd | Financial services | 2025 |
| Paswe Builders Ltd | Construction | 2025 |
| PAT Mckenna Engineering Ltd | Construction | 2003 |
| Patchwork People NI CIC | Education | 2025 |
| Patterson Innovations Ltd | Extraterritorial | 2004 |
| Patterson Trading Ltd | Wholesale & retail | 2020 |
| Paulcanavan Ltd | Extraterritorial | 2022 |
| Pave Guard CS Ltd | Administrative & support | 2026 |
| Pavilion Estate Agents (NI) Ltd | Real estate | 2024 |
| Paxar Limited | Manufacturing | 2014 |
| PAY Pump Ltd | Extraterritorial | 2015 |
| Payverse Ltd | Professional & scientific | 2025 |
| PCL Enviro Ltd | Water & waste | 2024 |
| PDL Construction and Groundwork Ltd | Construction | 2018 |
| PDM Services Limited | Manufacturing | 2015 |
| PDN Farms Ltd | Agriculture & fishing | 2020 |
| Peak Design Services Ltd | Professional & scientific | 2023 |
| Peak Fitness Tyrone Ltd | Arts & recreation | 2024 |
| Pearson Milking Technology UK Ltd | Wholesale & retail | 2022 |
| Peatlands Kennels Ltd | Agriculture & fishing | 2025 |
| Peatlands Playgroup Limited | Education | 2011 |
| PEM Consultants Ltd | Professional & scientific | 2015 |
| Peony Heights Company Limited | Financial services | 2024 |
| People Investments Ltd | Administrative & support | 2024 |
| People Management Solutions (NI) Ltd | Administrative & support | 2013 |
| Pepsfit Self-Care Ltd | Health & social care | 2020 |
| Perfection Hair Extensions Ltd | Other services | 2022 |
| Performance Tires Ltd | Wholesale & retail | 2022 |
| Permascreen Ltd | Wholesale & retail | 2013 |
| Personal Agency Academy Ltd | Education | 2026 |
| Peter Curran Construction Ltd | Construction | 2020 |
| Peter Murphy Plant Limited | Construction | 2018 |
| Petrocourt Forecourt Services NI Limited | Administrative & support | 2026 |
| Peyton Investment Management Limited | Other services | 2010 |
| PFN Farms Ltd | Agriculture & fishing | 2016 |
| PG Chips Omagh Limited | Hospitality | 2022 |
| PG Franchising Partners Limited | Hospitality | 2019 |
| PG Fresh Limited | Hospitality | 2014 |
| PG Quinn Ltd | Construction | 2003 |
| PH20 Luxury Tanning Ltd | Wholesale & retail | 2021 |
| Phace Contracts Ltd | Construction | 2005 |
| Phase Consulting Ltd | Professional & scientific | 2019 |
| Philip Pedlow Bricklaying Services Ltd | Construction | 2024 |
| Philip Rodgers Design LLP | | 2014 |
| Phoenix Fire Services Ltd | Construction | 2025 |
| Phoenix Industry Solutions Ltd | Administrative & support | 2026 |
| Phoenix Properties and More Ltd | Real estate | 2025 |
| PHS (NI) Limited | Construction | 2012 |
| Physiofem Limited | Health & social care | 2022 |
| Pimento Holdings Limited | Professional & scientific | 2019 |
| Pizza Point Warrenpoint Ltd | Hospitality | 2017 |
| Pizzarack Ltd | Hospitality | 2020 |
| PJ & L Trading Limited | Wholesale & retail | 2015 |
| PJ Kilpatrick Ltd | Professional & scientific | 2003 |
| PJR Bakeries Ltd | Manufacturing | 2026 |
| PKJ Construction Ltd | Construction | 2018 |
| Planning & Engineering Alliance Ltd | Construction | 2012 |
| Planning Consultancy N.I Ltd | Professional & scientific | 2026 |
| Plant-Tek Ltd | Construction | 2008 |
| Pleroma Distribution Limited | | 1994 |
| PM Cleaning DGN Limited | Administrative & support | 2021 |
| PM Property Investments Limited | Real estate | 2012 |
| PMB Contracts Ltd | Construction | 2021 |
| PMC Facilities Ltd | Construction | 2022 |
| Pmcg Group Ltd | Professional & scientific | 2025 |
| Pmck Holdings Limited | Construction | 2018 |
| PMG Contractors Ltd | Administrative & support | 2011 |
| PMG Sales Ltd | Wholesale & retail | 2006 |
| PMQ Taxis MOY Ltd | Transport & logistics | 2026 |
| PMV Auto Repairs Limited | Wholesale & retail | 2004 |
| PMV Woodcraft Ltd | Manufacturing | 2012 |