| NCF Holdings Limited | Professional & scientific | 2008 |
| NCG North East Limited | Construction | 2021 |
| NCL Automatic Driving School Ltd | Education | 2026 |
| NCL Plates Ltd | Wholesale & retail | 2026 |
| NCL Recovery Limited | Transport & logistics | 2024 |
| NCL Training Ltd | Education | 2025 |
| NCO Studio Limited | Wholesale & retail | 2019 |
| NCS Energy Solutions Ltd | Administrative & support | 2018 |
| NCS Holdings STL Ltd | Administrative & support | 2020 |
| NCS Retail Solutions Ltd | Other services | 2018 |
| NCS Support Centre Ltd | Administrative & support | 2018 |
| NCS Vehicle Hire Ltd | Transport & logistics | 2025 |
| ND Creative Limited | Professional & scientific | 2002 |
| ND Stays Ltd | Hospitality | 2024 |
| NDC Commercial Property Management Ltd | Real estate | 2014 |
| NDL Media Ltd | Wholesale & retail | 2002 |
| NDT Training & Consultancy Services Limited | Professional & scientific | 2005 |
| NE Building Developments Ltd | Construction | 2023 |
| NE Contractors Ltd | Construction | 2025 |
| NE CUT Outs Limited | Manufacturing | 2025 |
| NE Debt Fund Carried Interest Partner Limited | Financial services | 2024 |
| NE Debt Fund General Partner Limited | Financial services | 2024 |
| NE Driving Solutions Ltd | Information & communication | 2023 |
| NE Growth (Erdf) Carried Interest Partner Limited | Financial services | 2017 |
| NE Growth (Erdf) General Partner Limited | Financial services | 2017 |
| NE Heart Lung Limited | Health & social care | 2021 |
| NE Home Solutions Ltd | Manufacturing | 2018 |
| NE Investment Opportunities Limited | Real estate | 2025 |
| NE Local Magazines Ltd | Information & communication | 2019 |
| NE Motor Assist Ltd | Administrative & support | 2019 |
| NE Networks Ltd | Information & communication | 2014 |
| NE Paving and Landscaping Limited | Administrative & support | 2023 |
| NE Pipelines Holdings Ltd | Financial services | 2022 |
| NE Real Estates Limited | Real estate | 2021 |
| NE Small Loan (Erdf) General Partner Limited | Financial services | 2017 |
| NE Smaller Loans Fund Carried Interest Partner Limited | Financial services | 2024 |
| NE Smaller Loans Fund General Partner Limited | Financial services | 2024 |
| NE Technical Limited | Professional & scientific | 2016 |
| NE Wasteaway Ltd | Water & waste | 2019 |
| NE Wind Solutions Ltd | Professional & scientific | 2025 |
| Ne-Ac Cooling and Heating Ltd | Energy | 2024 |
| Ne-Tech Systems Ltd | Information & communication | 2020 |
| Ne-Web Ltd | Information & communication | 2003 |
| NE1 Printing Services Ltd | Manufacturing | 2025 |
| NE1 Service Course Limited | Wholesale & retail | 2026 |
| NEA Digital Technologies Ltd | Information & communication | 2018 |
| Neacsu Ltd | Health & social care | 2025 |
| Nebula Labs Limited | Information & communication | 2017 |
| Neclad Ltd. | Construction | 2017 |
| Neetzotz Ltd. | Other services | 2015 |
| NEL EOT Limited | Financial services | 2015 |
| NEL Fund Managers Limited | Financial services | 1990 |
| Nemul Management Limited | Professional & scientific | 2011 |
| Nentgate Limited | Real estate | 2023 |
| Neon Contractors Ltd | Construction | 2025 |
| Neon Property Group Ltd | Real estate | 2020 |
| NEP Services Ltd | Construction | 2006 |
| Neps Logistics Ltd | Transport & logistics | 2018 |
| Neps Property Solutions Ltd | Transport & logistics | 2021 |
| Neps Simplifying Logistics Ltd | Transport & logistics | 2025 |
| Nerc Holdings Ltd | Other services | 2023 |
| Nerc UK Ltd | Construction | 2017 |
| Nerds With Words Ltd | Information & communication | 2017 |
| Ners (NE) Limited | Other services | 2009 |
| NES (NE) Ltd | Other services | 2024 |
| Nesivos Hatorah Ltd. | Education | 2016 |
| Ness Foods Limited | Manufacturing | 2013 |
| Nest Road Developments Limited | Water & waste | 2015 |
| Nestiva Stays Ltd | Hospitality | 2025 |
| Netops Ninjas Ltd | Information & communication | 2022 |
| Network Times Ltd | Information & communication | 2016 |
| Netz Services Ltd | Professional & scientific | 2024 |
| Neuro Partners Limited | Health & social care | 2014 |
| NEV Properties Ltd | Hospitality | 2023 |
| Nevenues Ltd | Wholesale & retail | 2026 |
| New Apex Ltd | Information & communication | 2012 |
| New Dragon Place Ltd | Hospitality | 2025 |
| New Forest Developments (Eastwood) Limited | Construction | 2020 |
| New Gold Stitch Ltd | Other services | 2026 |
| New Horizon Horticultural Services Ltd | Administrative & support | 2015 |
| New Media Castle Ltd | Manufacturing | 2021 |
| New Pineapple Limited | Real estate | 2015 |
| New Road Property Investments Ltd | Real estate | 2019 |
| New Saltwell Sports & Social Club Ltd | Arts & recreation | 2026 |
| New Sovereign Reversions Limited | Real estate | 2011 |
| New Vape Castle Ltd | Wholesale & retail | 2025 |
| Newbolds Garage (Mansfield) Limited | Extraterritorial | 1975 |
| Newcastle Clinic Ltd | Health & social care | 2006 |
| Newcastle Electrical Center Limited | Construction | 2020 |
| Newcastle EYE Center Ltd | Health & social care | 2024 |
| Newcastle Health LLP | | 2025 |
| Newcastle Jazz Festival CIC | Arts & recreation | 2017 |
| Newcastle Management Services Limited | Real estate | 2025 |
| Newcastle Occupational Health and Hygiene Ltd | Professional & scientific | 2011 |
| Newcastle Skin Clinic Limited | Health & social care | 2017 |
| Newcastle Taxi Hire Ltd | Wholesale & retail | 2025 |
| Newcastle Tool & Gauge Limited | Manufacturing | 1978 |
| Newcastle Wheelchair Rugby CIC | Arts & recreation | 2022 |
| Newcastlefood Ltd | Hospitality | 2025 |
| Newgen Creative Ltd | Information & communication | 2015 |