| Moneywise Financial Solutions (Malton) Limited | Financial services | 2009 |
| Monoxide Console World Limited | Wholesale & retail | 2018 |
| Montif Limited | Professional & scientific | 2014 |
| Mooak Limited | Health & social care | 2022 |
| Moonriver Publishing Limited | Information & communication | 2007 |
| Morley Paving & Groundworks Ltd | Administrative & support | 2025 |
| Motorrad Konnection Limited | Wholesale & retail | 2022 |
| MP Equestrian Ltd | Manufacturing | 2023 |
| Mpeake Design Limited | Professional & scientific | 2025 |
| MRW Associates Ltd | Professional & scientific | 2010 |
| MTM Shutter Blinds Limited | Wholesale & retail | 2025 |
| Munteanuvas Limited | Transport & logistics | 2024 |
| My Vertical Farm Ltd | Agriculture & fishing | 2025 |
| Mykindabookkeeper Limited | Professional & scientific | 2018 |
| N D Crummack Ltd | Wholesale & retail | 2010 |
| N. Express Hand Carwash Ltd | Administrative & support | 2021 |
| N. G. Plumbing & Heating Limited | Construction | 2003 |
| NAC Holdings Ltd | Financial services | 2024 |
| National Landlords Alliance Limited | Administrative & support | 2015 |
| Natural Bidco Ltd | Financial services | 2024 |
| Neaco Holdings Limited | Financial services | 2014 |
| Neaco Limited | Professional & scientific | 1995 |
| Neesh Transport Ltd | Transport & logistics | 2019 |
| Nelson Pet Care Limited | Hospitality | 2012 |
| Nettles and Petals Limited | Professional & scientific | 2023 |
| Nevada Freeholds Ltd | Households | 2025 |
| Nevada Properties Ltd | Real estate | 2024 |
| New Brunswick Associates Limited | Professional & scientific | 2018 |
| New Horizon Marketing Limited | Real estate | 1997 |
| Newflow (Yorkshire) Limited | Extraterritorial | 2012 |
| Newflow Limited | Professional & scientific | 2010 |
| Newflow USA Limited | Manufacturing | 2018 |
| Newman and Cole Ltd | Wholesale & retail | 2018 |
| Next Generation Energy Ltd | Construction | 2022 |
| Next Generation Joinery Ltd | Manufacturing | 2019 |
| Next Steps Mental Health Resource Centre | Health & social care | 2011 |
| Nextgen Engineering Ltd | Manufacturing | 2024 |
| Nezbu Limited | Information & communication | 2016 |
| Nicholas Howard Homes Ltd | Real estate | 2013 |
| Nicholas Jack Limited | Wholesale & retail | 2020 |
| Nicholas Mayman Ltd | Energy | 2022 |
| Nigel Tinkler Bloodstock LLP | | 2011 |
| Nigel Tinkler Racing LLP | | 2017 |
| Nisha Commerce Ltd | Wholesale & retail | 2026 |
| Nixon Commercial Property Ltd | Households | 2021 |
| NO 1 Health & Beauty Ltd | Other services | 2009 |
| NO SNO Limited | Manufacturing | 1999 |
| NO4 Saville Street (Malton) Ltd | Wholesale & retail | 2018 |
| Noble 2022 Limited | Hospitality | 2022 |
| North RYE Property Ltd | Real estate | 2025 |
| North Yorkshire Pheasantries Limited | Agriculture & fishing | 2023 |
| North Yorkshire Transporters Ltd | Transport & logistics | 2025 |
| North-C Plumbing and Heating Limited | Construction | 2020 |
| Northodox Press Ltd | Information & communication | 2020 |
| Northwind Farm Ltd | Agriculture & fishing | 2023 |
| Norton Engineering Alloys Co. Limited | Manufacturing | 1972 |
| Norton Fried Chicken Ltd | Hospitality | 2026 |
| Norton Grill Limited | Hospitality | 2024 |
| Norton Joinery Limited | Manufacturing | 2000 |
| Norton Priory Garage Ltd | Wholesale & retail | 2012 |
| Norton Priory Management Company Limited | Households | 1990 |
| NST Audio Ltd | Manufacturing | 2014 |
| O J GAS Services Ltd | Construction | 2018 |
| O'Donnell Homes Ltd | Real estate | 2026 |
| OC377551 LLP | | 2012 |
| ODD & Associates Ltd | Professional & scientific | 2019 |
| Old Lodge Malton Ltd | Hospitality | 2025 |
| ON Nature Limited | Administrative & support | 2016 |
| ON the Wolds Consultancy Services Limited | Professional & scientific | 2025 |
| Operation K9 Ltd | Professional & scientific | 2014 |
| Opexcellence Limited | Professional & scientific | 2018 |
| Opus Park Limited | Real estate | 2023 |
| Orchard Close (Rillington) Management Ltd | Households | 2019 |
| P & L Bannister Limited | Agriculture & fishing | 2010 |
| P D Niven Racing Limited | Professional & scientific | 2004 |
| P Robinson Builders Ltd | Construction | 2018 |
| Palnova AI Ltd | Professional & scientific | 2026 |
| Panaser Professionals Ltd | Health & social care | 2019 |
| Parkside Lodge Ltd | Real estate | 2023 |
| Paul Chaplow Plumbing and Heating Limited | Construction | 2009 |
| Paul Richardson Plastering and Building Contractor Limited | Construction | 2019 |
| Paul Walker Cladding Ltd | Construction | 2025 |
| Paylor Enterprises Limited | Construction | 2010 |
| Paylor Fuels Limited | Manufacturing | 2003 |
| PB International Haulage Ltd | Transport & logistics | 2025 |
| Peach Power Limited | Manufacturing | 2023 |
| Peaks & Roots Limited | Financial services | 2025 |
| Pearson Accountants Ltd | Professional & scientific | 2020 |
| Pearson Enterprises Limited | Agriculture & fishing | 2003 |
| Pearsons Yard Management Company Limited | Real estate | 2005 |
| Pegram Yorkshire Limited | Professional & scientific | 2025 |
| Peleides Limited | Professional & scientific | 2011 |
| Peredurus Limited | Agriculture & fishing | 2025 |
| Pest Techs Pest Control Ltd | Other services | 2021 |
| Pickering Estate Agency Limited | Financial services | 2020 |
| PJC Pensions Consulting Limited | Financial services | 2017 |
| Planet Neutral CIC | Energy | 2021 |
| Planetmodo Ltd | Professional & scientific | 2026 |
| Plews Construction Law Consultants Limited | Professional & scientific | 2010 |
| PMI Service Ltd | Transport & logistics | 2026 |