| Noor Properties Limited | Real estate | 1983 |
| Northern Electrical Engineering Company Limited | Manufacturing | 1964 |
| Northern Stag Centre Limited | Wholesale & retail | 2007 |
| Nova Flux Limited | Professional & scientific | 2001 |
| NWM Property Investment Limited | Real estate | 2025 |
| Oakes Restoration Limited | Households | 1986 |
| Oakwell Community Assets Limited | Arts & recreation | 2003 |
| ODD Jobs (UK) Limited | Professional & scientific | 2002 |
| Ogley Accountants Limited | Professional & scientific | 2007 |
| Oldfield Developments Limited | Construction | 1973 |
| Olivet Mews Management Company Limited | Households | 2003 |
| One Health Group - General Surgery & Gynaecology LLP | | 2007 |
| One Health Group - Orthopaedic LLP | | 2005 |
| One Health Spine Clinic Limited Liability Partnership | | 2007 |
| Orchard Grove Ltd | Hospitality | 2007 |
| Ormond Pipework Services Ltd | Construction | 2005 |
| Orpeaks Ltd | Wholesale & retail | 2026 |
| Osborne (UK) Limited | Construction | 2007 |
| Osborne House Community Nursery Ltd | Health & social care | 1996 |
| Oughtibridge Developments Limited | Extraterritorial | 1979 |
| Oughtibridge Garage Limited | Wholesale & retail | 1961 |
| Outward Searches Limited | Information & communication | 2005 |
| Oxley Engineering Limited | Financial services | 2007 |
| P N Alarms Limited | Construction | 2006 |
| P R Continuum Limited | Administrative & support | 2002 |
| P.L.E. Properties Limited | Real estate | 1996 |
| Pagets Builders Merchants Limited | Wholesale & retail | 2001 |
| Parkgate Chiropody Limited | Other services | 2006 |
| Parksprings Motor Company Ltd | Wholesale & retail | 2025 |
| Paul Carter Design Limited | Professional & scientific | 2004 |
| Paul Greaves Ground Breaking Services Limited | Construction | 2007 |
| PB Construction (Sheffield) Ltd | Construction | 2006 |
| Pcsh Limited | Financial services | 2002 |
| Pegler Holdings Limited | Real estate | 2003 |
| PEN & Sword Books Limited | Information & communication | 1990 |
| Pennine Rail Limited | Wholesale & retail | 2007 |
| Peter Rowe Limited | Professional & scientific | 2005 |
| Peveril Systems Limited | Information & communication | 1999 |
| Pewit Homes Limited | Construction | 2003 |
| Phil Geesin Machinery Limited | Wholesale & retail | 1998 |
| Philip Hopkins Produce Limited | Agriculture & fishing | 2003 |
| Physio for Fitness Limited | Health & social care | 2003 |
| Pictorex Limited | Information & communication | 2005 |
| Pitstop Race Limited | Wholesale & retail | 2019 |
| PJH Consultancy Services Ltd | Administrative & support | 2003 |
| Planet Hair (2003) Limited | Other services | 2002 |
| Plevin Holdings Limited | Professional & scientific | 2009 |
| Plevinco 1 Limited | Financial services | 2023 |
| Plevinco 2 Limited | Financial services | 2023 |
| Plevinco 3 Limited | Financial services | 2023 |
| Plumb-Rite Services Limited | Construction | 2002 |
| Ponsford Limited | Wholesale & retail | 2005 |
| Porter Core Ltd | Wholesale & retail | 2026 |
| Porter Electrical Co. Limited | Construction | 1989 |
| Powerprojection Limited | Construction | 1999 |
| Poynton Wood Flats Management Limited | Households | 1979 |
| Premier Engineering (Construction) Limited | Construction | 2017 |
| Prestbury Butchers Limited | | 1981 |
| Prince Promotions Limited | Professional & scientific | 1999 |
| Principal Leisure Limited | | 1995 |
| Prism Financial Holdings Limited | Financial services | 2007 |
| Progressus Community CIC | Other services | 2023 |
| Project Dynamics Limited | Professional & scientific | 2004 |
| Properties 'R' Wells Limited | Real estate | 2004 |
| Property Maintenance Company (Doncaster) Limited | Construction | 2005 |
| Psalter Court Limited | Households | 1983 |
| Psalter Group Limited | Administrative & support | 2000 |
| Psalter Lane Management Ltd | Professional & scientific | 2007 |
| Pure Records (Yorkshire) Limited | Information & communication | 2003 |
| Pureserver Limited | Information & communication | 2004 |
| Purple X Software Limited | Information & communication | 1999 |
| QHL Management Company Limited | Households | 2003 |
| Qualter, Hall & Company Limited | Manufacturing | 1910 |
| Quick Fit and Parts Ltd | Wholesale & retail | 2026 |
| R & G (UK) Limited | Wholesale & retail | 2005 |
| R & S R Cookson Limited | Wholesale & retail | 1974 |
| R J LEE Construction Services Ltd | Construction | 2007 |
| R N R Construction and Construction Services Limited | Professional & scientific | 2006 |
| R Smith Construction Limited | Construction | 2025 |
| R. Plevin & Sons Limited | Manufacturing | 1974 |
| R.T.G. Leisure Limited | Hospitality | 2003 |
| Radcom Telecommunications Limited | Administrative & support | 2001 |
| Raven Edge Residents Management Company Limited | Households | 2007 |
| Raven Silverware Company Limited | Manufacturing | 2006 |
| Ravent Limited | Real estate | 1997 |
| RAW Technical Services Limited | Information & communication | 2004 |
| Raynot Specialist Welding Limited | Manufacturing | 2006 |
| Readway Limited | Transport & logistics | 2007 |
| Redholme Management Limited | Households | 1984 |
| Reedjoe Limited | Wholesale & retail | 2025 |
| Regency CUT Jewellers Limited | Wholesale & retail | 2006 |
| Regent Gardens Management Company Limited | Households | 2000 |
| Reliant Insurance Agency Limited | Financial services | 2002 |
| Renmarten Limited | | 1977 |
| Renowned JIU Jitsu York Limited | Education | 2018 |
| Resida Living Limited | Real estate | 1993 |
| REX Group Contracts Ltd | Wholesale & retail | 1919 |
| RGS Cleaning Limited | Administrative & support | 1997 |
| Rheola Park Limited | Hospitality | 2021 |
| Riverside Automation Limited | Manufacturing | 1992 |