| NB Health & Fitness Ltd | Other services | 2020 |
| Nbfade Ltd | Other services | 2025 |
| NBS Demolition Ltd | Construction | 2020 |
| NBS Engineering Solutions Limited | Professional & scientific | 2012 |
| NCH Developments Limited | Hospitality | 1997 |
| NDG Delivery Services Limited | Transport & logistics | 2017 |
| NDP Contracting Ltd | Construction | 2022 |
| Neal Estates Ltd | Real estate | 2024 |
| Neals Nursery Limited | Wholesale & retail | 2025 |
| Nearish Group Ltd | Information & communication | 2026 |
| Neatafan Limited | Manufacturing | 1983 |
| Neatovia Cleaning Solutions Ltd | Administrative & support | 2026 |
| Need Bar Ltd | Hospitality | 2025 |
| Neighbourhood Electrical Services Limited | Construction | 2021 |
| Neil James Electrical Ltd | Construction | 2022 |
| Neil Szymanski Ltd | Professional & scientific | 2015 |
| Neil's Development's Ltd | Other services | 2016 |
| Nelson Consultancy Services Ltd | Information & communication | 2024 |
| Nelson Digital Ltd | Information & communication | 2021 |
| Nelson Property Letting Ltd | Real estate | 2021 |
| Nelson Visionplus Limited | Wholesale & retail | 2002 |
| Nelson's Column Limited | Information & communication | 2022 |
| Neon Martial Arts & Fitness Centre Ltd | Education | 2019 |
| Neptune Geosciences Ltd | Professional & scientific | 2023 |
| Neptune Geosoftware Ltd | Information & communication | 2026 |
| Nerd Nirvana Ltd | Wholesale & retail | 2024 |
| Nether Alderley Limited | Real estate | 2023 |
| Netley Abbey Roofing Limited | Construction | 2009 |
| Netstronghold (UK) Limited | Information & communication | 2011 |
| Networkers International (UK) Limited | Administrative & support | 2000 |
| Networkers International Limited | Administrative & support | 2000 |
| Networkise Digital Technologies Limited | Information & communication | 2020 |
| Networx Research Limited | Professional & scientific | 2023 |
| NEU Site Media Ltd | Manufacturing | 2016 |
| Nevada Holdings Limited | Education | 2013 |
| Nevard Holdings Limited | Financial services | 2019 |
| Nevitt Investments Ltd | Real estate | 2018 |
| New ERA Travel Limited | Administrative & support | 2021 |
| New Face Interiors Ltd | Professional & scientific | 2021 |
| New Forest Maintenance Limited | Construction | 2021 |
| New Hazel Homes Ltd | Real estate | 2025 |
| New Horizons Cardiac Diagnostics Ltd | Professional & scientific | 2024 |
| New Horizons Consulting Ltd | Administrative & support | 2012 |
| New Horizons GP Services Limited | Information & communication | 2025 |
| New Horizons in Atrial Fibrillation Limited | Professional & scientific | 2025 |
| New Horizons Partners Ltd | Professional & scientific | 2024 |
| New Image Construction Ltd | Construction | 2022 |
| New Leaf Landscaping Limited | Administrative & support | 2025 |
| New Malden Specsavers Limited | Wholesale & retail | 2003 |
| New Medical Systems Limited | Health & social care | 2007 |
| New Milton Specsavers Limited | Wholesale & retail | 2017 |
| New Payment Innovation Limited | Other services | 2023 |
| New Times Atlantic Co., Ltd | Professional & scientific | 2024 |
| New Vision Labelling & Printing Limited | Manufacturing | 2019 |
| New Vision Structural Design Services Ltd | Construction | 2018 |
| New York Pilates LLP | | 2015 |
| Newark Specsavers Hearcare Limited | Wholesale & retail | 2025 |
| Newbarn Square Limited | Professional & scientific | 1998 |
| Newbury Hectors Way Specsavers Limited | Wholesale & retail | 2018 |
| Newbury Specsavers Hearcare Limited | Wholesale & retail | 2024 |
| Newbury Specsavers Limited | Wholesale & retail | 1992 |
| Newbury Visionplus Limited | Wholesale & retail | 1992 |
| Newcastle 2 Domiciliary Specsavers Limited | Wholesale & retail | 2014 |
| Newcastle Kingston Park Specsavers Hearcare Limited | Wholesale & retail | 2023 |
| Newcastle Kingston Park Specsavers Limited | Wholesale & retail | 2018 |
| Newcastle Newmedica Limited | Health & social care | 2021 |
| Newcastle Specsavers Hearcare Limited | Wholesale & retail | 2005 |
| Newcastle Specsavers Limited | Wholesale & retail | 1991 |
| Newcastle Visionplus Limited | Wholesale & retail | 1998 |
| Newcastle-Under-Lyme Specsavers Hearcare Limited | Wholesale & retail | 2016 |
| Newcastle-Under-Lyme Specsavers Limited | Wholesale & retail | 1995 |
| Newcastle-Under-Lyme Visionplus Limited | Wholesale & retail | 1995 |
| Newdrives Restoration Services Limited | Administrative & support | 2022 |
| Newgate Completion Technology Limited | Professional & scientific | 2008 |
| Newlands Specsavers Limited | Wholesale & retail | 2011 |
| Newmarket Specsavers Limited | Wholesale & retail | 2002 |
| Newport Domi Audiology Specsavers Limited | Wholesale & retail | 2026 |
| Newport Drive Management Limited | Households | 2008 |
| Newport Pagnell Specsavers Limited | Wholesale & retail | 2017 |
| Newport Shropshire Specsavers Limited | Wholesale & retail | 2018 |
| Newport Specsavers Hearcare Limited | Wholesale & retail | 2014 |
| Newport Specsavers Limited | Wholesale & retail | 1988 |
| Newport Visionplus Limited | Wholesale & retail | 1998 |
| Newquay Specsavers Limited | Wholesale & retail | 2005 |
| Newquay Visionplus Limited | Wholesale & retail | 2005 |
| Newson Real Estate Ltd | Real estate | 2019 |
| Newteam Services Limited | Construction | 2005 |
| Newton Abbot Specsavers Hearcare Limited | Wholesale & retail | 2025 |
| Newton Aycliffe Specsavers Limited | Wholesale & retail | 2004 |
| Newton Aycliffe Visionplus Limited | Wholesale & retail | 2004 |
| Newton Mearns Specsavers Hearcare Limited | Wholesale & retail | 2017 |
| Newton Mearns Specsavers Limited | Wholesale & retail | 2017 |
| Newtonmore Limited | Professional & scientific | 2025 |
| Newtown Specsavers Limited | Wholesale & retail | 2006 |
| Newtown Visionplus Limited | Wholesale & retail | 2006 |
| NEX Systems Ltd | Information & communication | 1995 |
| Nexaim Football Ltd | Education | 2024 |
| Next Generation Clothing Limited | Wholesale & retail | 2006 |
| Next Step Theatre Company Ltd | Arts & recreation | 2026 |
| Next Stop Social Limited | Other services | 2026 |