| Penrith Farmers and Kidds Public Limited Company(The) | Real estate | 1876 |
| Penrith Glass Ltd | Construction | 2000 |
| Penrith Golf Club Limited | Arts & recreation | 2015 |
| Penrith Golf Hub Limited | Arts & recreation | 2019 |
| Penrith Hand Car Wash Ltd | Administrative & support | 2024 |
| Penrith Industrial BID Company Ltd | Other services | 2018 |
| Penrith Leisure Limited | Hospitality | 2025 |
| Penrith Mobile Mechanic Ltd | Professional & scientific | 2025 |
| Penrith Motorcycles Limited | Wholesale & retail | 2005 |
| Penrith Parish Centre Limited | Health & social care | 2003 |
| Penrith Players Theatre | Arts & recreation | 1996 |
| Penrith Posters Ltd | Arts & recreation | 2017 |
| Penrith Properties Ltd | Real estate | 2012 |
| Penrith Rufc Limited | Arts & recreation | 2012 |
| Penrith Scaffolding Services Limited | Construction | 2007 |
| Penrith Supplements Ltd | Arts & recreation | 2021 |
| Penrith Tennis Club Limited | Education | 2021 |
| Penrith Tool Hire Limited | Administrative & support | 2004 |
| Penrith Windows Ltd | Construction | 2000 |
| Penrith.Town Limited | Extraterritorial | 2022 |
| PENRITH2KENDAL ARC Community Interest Company | Agriculture & fishing | 2026 |
| Perdei Portfolio Ltd | Financial services | 2023 |
| Perdicium Limited | Information & communication | 2022 |
| Perennial Process Limited | Administrative & support | 1998 |
| Perfect Christmas Trees Limited | Wholesale & retail | 2025 |
| Performance Pullets Limited | Agriculture & fishing | 2011 |
| Performant Solutions Limited | Education | 2024 |
| Perma-Fix Environmental Services UK Limited | Professional & scientific | 2002 |
| Peter Sorton & Associates Limited | Administrative & support | 2002 |
| Petriana Ltd | Information & communication | 2023 |
| PFK Estate Agency Limited | Real estate | 2023 |
| PFK Rural Limited | Real estate | 2015 |
| PH Link Ltd | Hospitality | 2023 |
| PHD Computer Consultants Limited | Information & communication | 1994 |
| Phil Teasdale Limited | Construction | 2018 |
| Pictures in the Fire Ltd | Arts & recreation | 2025 |
| Pierce Haley Ltd | Manufacturing | 2022 |
| Pine Tree Nurseries Limited | Wholesale & retail | 2013 |
| Piper Assessment Limited | Real estate | 1998 |
| Piper Training Limited | Extraterritorial | 1995 |
| Pittstop Change Consulting Ltd | Professional & scientific | 2024 |
| Pixovex Ltd | Information & communication | 2026 |
| Pizzeria Itali Ltd | Hospitality | 2017 |
| PJ Dixon Services Ltd | Water & waste | 2010 |
| PJN Construction Limited | Construction | 2014 |
| Pjoca Limited | Health & social care | 2022 |
| Placed Town Planning Limited | Professional & scientific | 2015 |
| Planning Branch Limited | Professional & scientific | 2007 |
| Platinum Laundry Systems Ltd | Wholesale & retail | 2021 |
| Polkadot Properties Ltd | Real estate | 2007 |
| Pond Time Ltd | Hospitality | 2024 |
| Poppy House Ltd | Hospitality | 2023 |
| Potfest Limited | Arts & recreation | 2006 |
| Pottery House Properties Limited | Real estate | 2024 |
| Pragmatic Presence Ltd | Health & social care | 2024 |
| Premier Gastroenterology Ltd | Health & social care | 2023 |
| Prima Taxis Eden Limited | Transport & logistics | 2012 |
| Primal Feasts Limited | Hospitality | 2026 |
| Primasonics International Limited | Professional & scientific | 1998 |
| Prime Strategic Assets Ltd | Real estate | 2026 |
| Primelodge UK Hotels Ltd | Hospitality | 2020 |
| Primrose Leisure Limited | Real estate | 2008 |
| Principled Pies and Provisions Ltd | Manufacturing | 2019 |
| Pristine Gleam Services Ltd | Administrative & support | 2025 |
| Priviledge Healthcare Limited | Health & social care | 2015 |
| Proage Limited | Professional & scientific | 1997 |
| Procter Building Ltd | Construction | 2022 |
| Profitir Limited | Professional & scientific | 2025 |
| Project Wyoming Bidco Limited | Financial services | 2023 |
| Project Wyoming Holdco Limited | Financial services | 2023 |
| Project Wyoming Midco Limited | Financial services | 2023 |
| Project Wyoming Topco Limited | Financial services | 2023 |
| Proper Performance Ltd | Education | 2023 |
| Prosport Cars Limited | Extraterritorial | 2017 |
| Proximityfocal Limited | Extraterritorial | 2019 |
| Prufc Limited | Other services | 2015 |
| PSM Medical Ltd | Wholesale & retail | 2023 |
| PSS Home Entertainment Limited | Wholesale & retail | 2003 |
| Pt-Cubed Ltd | Health & social care | 2010 |
| Pulse Drive Health & Performance Ltd | Real estate | 2025 |
| Pure Smile Line Limited | Health & social care | 2021 |
| QA Test Limited | Information & communication | 2006 |
| Qala Limited | Professional & scientific | 2017 |
| QS Nails Limited | Other services | 2025 |
| Quality Seismic Consultancy Limited | Professional & scientific | 2006 |
| Quartz CAP Ltd | Other services | 2021 |
| Quattro Contracting (Penrith) Limited | Construction | 1998 |
| Quattro Products Limited | Construction | 1999 |
| Qudsia Construction Limited | Construction | 2020 |
| Queen Square Medical Services Limited | Health & social care | 2003 |
| Quentin Park (Cumwhinton) Ltd | Construction | 2019 |
| Quetta Investments Ltd | Real estate | 2020 |
| Quetta Limited | Construction | 2019 |
| Quick Spark Ltd | Construction | 2020 |
| Quiet Site Ltd.(The) | Hospitality | 1967 |
| R & S Bailey (Kendal) Ltd | Hospitality | 2024 |
| R B T L Limited | Construction | 2000 |
| R Douglas Painters & Decorators Ltd | Construction | 2004 |
| R G Anderton Limited | Financial services | 2024 |
| R Heritage Design and Build Limited | Construction | 2017 |