| North Star Financial Consultants Ltd | Financial services | 2014 |
| North to the Left Limited | Arts & recreation | 2011 |
| North West Boat Services Limited | Manufacturing | 2020 |
| Northamptonshire Leisure Estates Limited | Extraterritorial | 2005 |
| Northern Deliveries Ltd | Transport & logistics | 2020 |
| Northern Heights Dance & Aerial Limited | Arts & recreation | 2019 |
| Northern Inter-Schools Christian Union | Other services | 2010 |
| Northern Pasta Company Ltd | Manufacturing | 2022 |
| Northern Pickleball Limited | Arts & recreation | 2026 |
| Northern Plant Trading Company Ltd | Construction | 2011 |
| Northern Tactical Ltd | Wholesale & retail | 2025 |
| Northern Value Limited | Professional & scientific | 2008 |
| Northridge Building & Roofing Limited | Construction | 2026 |
| Norvic Group Ltd | Professional & scientific | 2022 |
| Norvic Ltd | Extraterritorial | 2019 |
| Norvic Modular Systems Ltd | Manufacturing | 2014 |
| Notice Signs and Graphics Ltd | Professional & scientific | 2019 |
| Nowknow Limited | Administrative & support | 2021 |
| NSN Construction North West Limited | Construction | 2007 |
| NSN Developments North West Limited | Construction | 2017 |
| Nu-Vend Ltd | Wholesale & retail | 2025 |
| Oakden Property Ltd | Construction | 2017 |
| Oakmont Plumbing and Heating Ltd | Construction | 2019 |
| Oakwell Property Ltd | Real estate | 2021 |
| OC Business Solutions Ltd | Administrative & support | 2025 |
| Old Hall Caravan Park Limited | Hospitality | 1999 |
| Old Manor Farm Casterton Management Company Limited | Households | 2006 |
| Old School Brewery Limited | Manufacturing | 2011 |
| Old Tannery (Kirkby Lonsdale) Management Company Limited | Real estate | 1998 |
| Olikate Ltd | Administrative & support | 2014 |
| Oliver Craig Chiropody Ltd | Health & social care | 2013 |
| Oliver Taylor Electrical Ltd | Construction | 2022 |
| OLV Labs Ltd | Information & communication | 2026 |
| Omega EFA Limited | Manufacturing | 2001 |
| Omnico Classic Accessories Limited | Wholesale & retail | 2006 |
| Opes Independent Financial Advisers Ltd | Financial services | 2016 |
| Orrion Asbestos Limited | Professional & scientific | 2015 |
| Osteohealthcare Limited | Professional & scientific | 2014 |
| OSW Motorcycles Limited | Extraterritorial | 2018 |
| Otisco Ltd | Professional & scientific | 2013 |
| P & L Barton Limited | Construction | 1988 |
| P & W Group Limited | Construction | 2003 |
| P. Mcgaffigan & Sons Limited | Manufacturing | 1986 |
| P.N.R. International Limited | Professional & scientific | 1984 |
| P4 Innovation Limited | Information & communication | 2010 |
| Pace Pet Supplies Limited | Wholesale & retail | 2018 |
| PAF Highways & Traffic Safety Ltd | Professional & scientific | 2005 |
| Paget One Limited | Real estate | 2003 |
| Paint Mine Woods Limited | Arts & recreation | 1995 |
| Papaya Trading Limited | Wholesale & retail | 2013 |
| Paragon Films Limited | Information & communication | 2004 |
| Paries Holdings Limited | Information & communication | 2013 |
| Park Lane Cartmel Limited | Other services | 2015 |
| Parker & Parker Limited | Wholesale & retail | 1952 |
| PARR01 Limited | Health & social care | 2023 |
| Party Project Event Hire Ltd | Arts & recreation | 2006 |
| Pasture Gelato Ltd | Manufacturing | 2022 |
| Patramus Limited | Hospitality | 2003 |
| Patrician Networks Ltd | Other services | 2021 |
| Paul Brockbank Electrical Ltd | Construction | 2019 |
| Paul Edwards Joinery Limited | Construction | 2011 |
| Paul Harness Consulting Ltd | Information & communication | 2022 |
| Payroll Solutions (NW) Limited | Administrative & support | 2019 |
| Peaberry's Group Limited | Real estate | 2015 |
| Peakdale Quarry Products Limited | Wholesale & retail | 1999 |
| Pear Tree Park Management Company Ltd | Real estate | 2003 |
| Pebble Healthcare Limited | Health & social care | 2018 |
| Penningtons (Kendal) Limited | Construction | 1947 |
| Penningtons Quarry Limited | Mining & quarrying | 2017 |
| Penrith Entertainment Centre Limited | Real estate | 1998 |
| Performance Link Limited | Professional & scientific | 2000 |
| Perkins Window Cleaning Ltd | Administrative & support | 2020 |
| PH Cleaning (Northwest) Limited | Administrative & support | 2024 |
| Pharma Storage Limited | Wholesale & retail | 2025 |
| Phil Brown Construction Limited | Construction | 2002 |
| Picrom Psychology Ltd | Education | 2014 |
| Pinecroft Lodges Limited | Hospitality | 2019 |
| Pinevale Management Company Limited | Households | 1994 |
| Pinkiced Limited | Hospitality | 2006 |
| Pj&Hj Onions & Sons Ltd | Agriculture & fishing | 2024 |
| PJP Construction Limited | Construction | 1980 |
| Platform Solutions Ltd | Construction | 2021 |
| Plato's (Kirkby Lonsdale) Limited | Hospitality | 2016 |
| Platos Girl Ltd | Wholesale & retail | 2019 |
| Plum Tree Leisure Ltd | Hospitality | 2021 |
| Plus Ultra Property Ltd | Real estate | 2025 |
| Plywood Ltd | Construction | 2021 |
| Pocket Watch Assistant Ltd | Administrative & support | 2023 |
| Pontville School Limited | Extraterritorial | 2002 |
| Pooch Pods Ltd | Other services | 2021 |
| Portabello Blinds & Curtains Limited | Wholesale & retail | 2017 |
| Portabello Interior Decor Limited | Wholesale & retail | 2025 |
| Porterhygiene Limited | Health & social care | 2017 |
| Porterweld Engineering Limited | Manufacturing | 1999 |
| Powerpalz Limited | Energy | 2024 |
| Premier Assignments Limited | Professional & scientific | 2015 |
| Pressuretech Transport Services Limited | Wholesale & retail | 1991 |
| Pride Bar Entertainment Ltd | Hospitality | 2025 |
| Primrose Bank Caravan Park Limited | Extraterritorial | 2001 |
| Prince of England Limited | Wholesale & retail | 2001 |