| MYBID4IT Ltd | Real estate | 2018 |
| N C Developments (North Yorkshire) Limited | Construction | 2018 |
| N Farrar Investments Ltd | Financial services | 2025 |
| N&J Cooke Orthopaedics Limited | Health & social care | 2018 |
| Ncair Property and Storage Ltd | Financial services | 2023 |
| NDS Materials Ltd | Water & waste | 2026 |
| Neil Whitley Interim and Consultancy Ltd | Professional & scientific | 2013 |
| Netball 4 ALL UK Ltd | Education | 2021 |
| Netprofitplus Ltd | Professional & scientific | 2011 |
| New Addition Windows (Timber) Ltd | Construction | 2007 |
| New Addition Windows Limited | Construction | 2003 |
| New Aspect Projects Limited | Real estate | 1998 |
| New Leaf Landscapes Limited | Construction | 2005 |
| Newlife Window Solutions Limited | Construction | 2013 |
| Newspan Construction Ltd | Construction | 2006 |
| Newspan Developments (South Otterington) Limited | Real estate | 2026 |
| Newspan Developments Limited | Real estate | 2003 |
| Nexus Hygiene Limited | Administrative & support | 2008 |
| Niche Nosh Limited | Hospitality | 2010 |
| Nick Booth Ltd | Professional & scientific | 2013 |
| Nimrod Services Limited | Professional & scientific | 2019 |
| Nine SIX Electrical Ltd | Wholesale & retail | 2022 |
| Nodnewel Ltd | Health & social care | 2024 |
| North Moor Engineering Limited | Manufacturing | 2000 |
| North Paws Rehabilitation Referrals Ltd | Professional & scientific | 2023 |
| North Star (York) Investment Limited | Financial services | 2019 |
| North Star Roofing & Building Ltd | Construction | 2026 |
| North Yorkshire Fire Protection Company Ltd | Other services | 2026 |
| North Yorkshire Hospitality Ltd | Hospitality | 2023 |
| North Yorkshire Property Group Ltd | Real estate | 2025 |
| North Yorkshire Youth Limited | Education | 2006 |
| Northallerton Damp Proofing Ltd | Construction | 2013 |
| Northallerton Music and PUB Company Ltd | Hospitality | 2025 |
| Northern Antique Dealers Fair Limited | Professional & scientific | 1999 |
| Northern Aqua Activities Limited | Wholesale & retail | 2025 |
| Northern Film Locations Ltd | Information & communication | 2022 |
| Northern Skies Collective Ltd | Professional & scientific | 2018 |
| Northfields Farm Limited | Agriculture & fishing | 2013 |
| Norton Media Limited | Information & communication | 2015 |
| NOT Just a Childminder Ltd | Information & communication | 2026 |
| Nova Ecom Ltd | Professional & scientific | 2023 |
| Novo UNO Limited | Other services | 2019 |
| Nuggle Ltd | Information & communication | 2025 |
| Nursery Mews Management Company Limited | Real estate | 2008 |
| Nursery Park Developments Ltd | Real estate | 2018 |
| NY Civils Limited | Construction | 2021 |
| O.K.S. Construction Ltd | Construction | 2017 |
| Oakdale Farms Limited | Real estate | 2003 |
| Oaksmiths of Yorkshire Limited | Construction | 2021 |
| OBI 1 Consultant Limited | Administrative & support | 2018 |
| Occasions and Handmade Treasures Ltd | Wholesale & retail | 2025 |
| Oceanic Marine Services Ltd. | Manufacturing | 2013 |
| OK Change Limited | Professional & scientific | 2017 |
| Old Mill Furniture (Yorkshire) Ltd | Manufacturing | 2003 |
| ON Site - Outfield Ltd | Construction | 2025 |
| One N Leisure Limited | Arts & recreation | 2009 |
| Optivis QS Limited | Professional & scientific | 2025 |
| Orchard Resourcebase Limited | Information & communication | 2005 |
| Oswald Potter Farms (Kirklington) Limited | Agriculture & fishing | 1977 |
| Outdoor Habitat Ltd | Extraterritorial | 2011 |
| Oxfield Produce Ltd | Real estate | 2024 |
| P & MF Fothergill Ltd | Agriculture & fishing | 2023 |
| P & S Hire Limited | Administrative & support | 2007 |
| P 'N' P Coaches Limited | Transport & logistics | 2003 |
| P Collinson Ltd | Agriculture & fishing | 2024 |
| P.V Brockhills Limited | Agriculture & fishing | 2007 |
| Padget Construction Limited | Construction | 2014 |
| Park House Luxury Dog Boarding Ltd | Other services | 2021 |
| Park Lane Construction Ltd | Construction | 2001 |
| Parker Oak (Yorkshire) Limited | Construction | 2009 |
| Parkland PUB Company Ltd | Hospitality | 2024 |
| Parkland Trading Ltd | Hospitality | 2025 |
| Pasture House Farm Ltd | Agriculture & fishing | 2024 |
| Patcha Ltd | Wholesale & retail | 2023 |
| Patersons of Thirsk Limited | Water & waste | 2004 |
| PC Developments Yorkshire Ltd | Administrative & support | 2019 |
| PDM International Limited | Administrative & support | 2005 |
| Peaches Thirsk Ltd | Hospitality | 2025 |
| Peacocks of Thirsk Limited | Agriculture & fishing | 2000 |
| Pearson Agricultural and Forestry Services Ltd | Agriculture & fishing | 2018 |
| Pendant Commercial Solutions Ltd | Professional & scientific | 2020 |
| Pendant Financial Services Limited | Financial services | 2014 |
| Pennys Garden Ltd | Wholesale & retail | 2025 |
| Perigon Holdings Limited | Financial services | 2023 |
| Pet Food (UK) Holdings Limited | Wholesale & retail | 2014 |
| Pet Food (UK) International Limited | Wholesale & retail | 2014 |
| Pet Food (UK) IP Limited | Wholesale & retail | 2014 |
| Pet Food (UK) Limited | Wholesale & retail | 2008 |
| Pet Food (UK) Properties Limited | Wholesale & retail | 2015 |
| Pete Hawkins Limited | Information & communication | 2010 |
| PHD Capital Ltd | Real estate | 2021 |
| Pignut Restaurant Ltd | Hospitality | 2023 |
| Pijanli Gemmaro Ltd | Hospitality | 2025 |
| Pinchbeck Chef Ltd | Hospitality | 2021 |
| Pitcairn Consulting Ltd | Construction | 2024 |
| Place Property Group Ltd | Information & communication | 2015 |
| Plan & Plant Ltd | Administrative & support | 2022 |
| Plant and Safety Training Yorkshire Ltd | Education | 2013 |
| Play to PAR Commercial Ltd | Arts & recreation | 2023 |
| Play to PAR Retail Ltd | Arts & recreation | 2023 |