| Neil Gales Ltd | Construction | 2010 |
| Neil Willis Limited | Professional & scientific | 2022 |
| Nelson's Fencing Ltd | Construction | 2019 |
| Nepc 2020 Ltd | Hospitality | 2020 |
| Nepc 2026 Ltd | Hospitality | 2026 |
| Nesbitt Security Systems Ltd | Construction | 2023 |
| Nest Wealth Realty Ltd | Real estate | 2025 |
| Netball Nation Ltd | Education | 2025 |
| Netherlaw Management Company Limited | Households | 2006 |
| Nettga Limited | Professional & scientific | 2015 |
| Network Surveying Ltd | Professional & scientific | 2019 |
| Never Throw in the Towel Ltd | Administrative & support | 2025 |
| Never Throw in the Towel Project Ltd | Administrative & support | 2024 |
| Nevisons Events Ltd | Wholesale & retail | 2025 |
| New Abode Holdings Ltd | Real estate | 2024 |
| New Abode Property Management Ltd | Households | 2024 |
| New Approach Racing Limited | Arts & recreation | 2016 |
| New Beach Retail and Associates Limited | Professional & scientific | 2018 |
| New Bridgegate Tyres Aycliffe Limited | Wholesale & retail | 2023 |
| New Bridgegate Tyres Barnard Castle Limited | Wholesale & retail | 2023 |
| New Bridgegate Tyres Birtley Limited | Wholesale & retail | 2023 |
| New Bridgegate Tyres Ltd | Wholesale & retail | 2014 |
| New Bridgegate Tyres Middlesbrough Limited | Wholesale & retail | 2025 |
| New Bridgegate Tyres Newcastle Limited | Wholesale & retail | 2024 |
| New Chapter Takeaway Ltd | Hospitality | 2021 |
| New Day Safety Solutions Ltd | Administrative & support | 2018 |
| New Design Technology UK Ltd | Administrative & support | 2022 |
| New Leung KEE 77788 Ltd | Hospitality | 2025 |
| New Leung KEE Ltd | Hospitality | 2020 |
| New Mount Reclaim Limited | Financial services | 2015 |
| New Rooms Extensions Limited | Construction | 2018 |
| New Sing LEE Curry House Ltd | Hospitality | 2021 |
| New World Hotels Limited | Administrative & support | 1988 |
| Newall Capital Group Ltd | Real estate | 2026 |
| Newalldevelopmentgroup Ltd | Construction | 2024 |
| Newbus Cottages Limited | Households | 2008 |
| Newlands Group Limited | Financial services | 2021 |
| Newlyn Professional Cleaning Services Ltd | Other services | 2013 |
| Newsboard Ltd | Wholesale & retail | 2003 |
| Newton Hall Paving and Landscapes Limited | Administrative & support | 2021 |
| Next Chapter Lets Limited | Households | 2025 |
| Next Generation Fabrications Limited | Manufacturing | 2016 |
| Next Level Construction Services Limited | Construction | 2024 |
| Nextpath Mobility Solutions Ltd | Manufacturing | 2025 |
| Niaz Javed Trading Ltd | Wholesale & retail | 2025 |
| Nibolt Ltd | Information & communication | 2013 |
| Nice and Tasty Limited | Hospitality | 2016 |
| Nice Cars Darlington Ltd | Wholesale & retail | 2025 |
| Nicheli UK Limited | Wholesale & retail | 2003 |
| Nichol & Hill Limited | Wholesale & retail | 2004 |
| Nicholson Consultancy Limited | Professional & scientific | 2005 |
| Nickwolstpsych Limited | Health & social care | 2025 |
| Nicole Shauna Limited | Wholesale & retail | 2025 |
| Nicoll SUB Contractors Ltd | Construction | 2025 |
| Nicos and Market Ltd | Wholesale & retail | 2016 |
| Nigel Howard Limited | Transport & logistics | 2005 |
| Nijjar Maintenance Services Ltd | Professional & scientific | 2023 |
| Nile UK Ltd | Wholesale & retail | 2020 |
| Nims Freight Services Limited | Transport & logistics | 2010 |
| Nixon Global Education and Psychology Limited | Health & social care | 2020 |
| NJS Limited | Construction | 2006 |
| Njspk Properties Ltd | Real estate | 2021 |
| NO 65 Ltd | Hospitality | 2025 |
| NO Pressure Limited | Information & communication | 2013 |
| NO Worries, BRU Coffee Company Limited | Wholesale & retail | 2026 |
| Nobia UK Trustees Limited | Financial services | 2016 |
| Noble Equestrian Centre Ltd | Agriculture & fishing | 2026 |
| Noble Innovate Ltd | Information & communication | 2019 |
| Nohas Limited | Health & social care | 2014 |
| Nomad Ventures Marketing Ltd | Professional & scientific | 2024 |
| Noodlesco Ltd | Other services | 2020 |
| Nora Amir Locum Ltd | Wholesale & retail | 2021 |
| Norevny Ltd | Wholesale & retail | 2025 |
| Norfolk Beds Limited | Wholesale & retail | 2022 |
| Norta Associates Ltd | Education | 2026 |
| North & Knot Ltd | Manufacturing | 2025 |
| North East Auto Tech Ltd | Wholesale & retail | 2025 |
| North East Hearing and Balance Limited | Health & social care | 2020 |
| North East Outdoor Adventures Ltd | Education | 2019 |
| North East Pottery Supplies Limited | Wholesale & retail | 2021 |
| North East Property Projects Limited | Construction | 2009 |
| North East Region of Parent Carer Forums CIC | Education | 2022 |
| North East Roofing and Cladding Ltd | Construction | 2025 |
| North East Therapies C.I.C. | Health & social care | 2026 |
| North East Women's Rugby Limited | Education | 2025 |
| North of England Estates Limited | Hospitality | 1934 |
| North Road Chippy Limited | Hospitality | 2025 |
| North Shire Limited | Hospitality | 2015 |
| North View Engineering Services Limited | Manufacturing | 2025 |
| North View Holdings (NE) Limited | Financial services | 2025 |
| North Yorks Roofing Services Ltd | Construction | 2025 |
| Northallerton Communications Limited | Wholesale & retail | 2019 |
| Northeastern Finance Limited | Financial services | 1985 |
| Northern Arch Learning Partnership | Education | 2011 |
| Northern Construc Services Ltd | Administrative & support | 2023 |
| Northern Express Logistics Ltd | Transport & logistics | 2025 |
| Northern Mech Limited | Construction | 2023 |
| Northern Publishing UK Limited | Administrative & support | 2016 |
| Northern Residential Homes Ltd | Real estate | 2022 |
| Northern Wheel Supplies Limited | | 1988 |