| North West Locksmith Training Limited | Education | 2022 |
| North West Management Information Solutions Limited | Information & communication | 2016 |
| North West Neurotherapeutics-Neuropsychology Experts Limited | Extraterritorial | 2020 |
| North West Numbers C.I.C. | Professional & scientific | 2019 |
| North West Plumbing & Bathrooms Ltd | Construction | 2025 |
| North West Stove Installers Ltd | Construction | 2015 |
| Northam Green Limited | Professional & scientific | 2018 |
| Northauto Limited | Wholesale & retail | 2018 |
| Northbound Media Ltd | Information & communication | 2026 |
| Northbound Production House CIC | Administrative & support | 2023 |
| Northcube Ltd | Wholesale & retail | 2025 |
| Northern Access Scaffolding Ltd | Construction | 2022 |
| Northern Bakery Services Limited | Extraterritorial | 1994 |
| Northern Glazing Systems Limited | Construction | 2022 |
| Northern Ground Testing Limited | Construction | 2002 |
| Northern Metalworks Ltd | Professional & scientific | 2022 |
| Northern Pet Company Ltd | Wholesale & retail | 2002 |
| Northern Portable Appliance Testing Limited | Manufacturing | 2019 |
| Northern Safety Solutions (UK) Ltd | Professional & scientific | 2014 |
| Northern Star Academy Ltd | Education | 2020 |
| Northern Stone Sales (UK) Limited | Wholesale & retail | 2012 |
| Northern UK Consultants Ltd | Administrative & support | 2026 |
| Northern Views Home Improvements Ltd | Construction | 2024 |
| Northern Wall & Floor Limited | Wholesale & retail | 1984 |
| Northlands Capital Limited | Wholesale & retail | 2020 |
| Northline Projects Ltd | Wholesale & retail | 2025 |
| Northveil Ltd | Administrative & support | 2026 |
| Northwest Concrete and Grab Hire Services Ltd | Construction | 2025 |
| Northwest Engineering Ltd | Professional & scientific | 2022 |
| Northwest Logistics and Storage Limited | Extraterritorial | 2019 |
| Northwest Storage and Processing Limited | Transport & logistics | 2008 |
| Northwestmechanics Ltd | Wholesale & retail | 2025 |
| Northwood Accountancy Ltd | Professional & scientific | 2013 |
| NOT for Cats Dog Day Camp Ltd | Other services | 2025 |
| Nothing to Prove Limited | Manufacturing | 2026 |
| Nourish From Within GUT Health Ltd | Wholesale & retail | 2025 |
| Nova Artes Projects Limited | Administrative & support | 2020 |
| Novel Threads Ltd | Wholesale & retail | 2024 |
| Novus Clinics UK Limited | Extraterritorial | 2016 |
| NOW Spinning Limited | Real estate | 2024 |
| Now-Films(The Pebble and the BOY) Ltd | Information & communication | 2018 |
| NQ Retail Limited | Wholesale & retail | 2004 |
| NR Investors LP | | 2006 |
| NRG (NW) Limited | Construction | 2014 |
| NSC Nova Service & Consulting GmbH | Other services | 2023 |
| Nshr Limited | Other services | 2011 |
| NSM Forestry & Arboricultural Ltd | Administrative & support | 2020 |
| NTF Property Ltd | Real estate | 2025 |
| NTV Construction Ltd | Construction | 2021 |
| NU Apex Limited | Wholesale & retail | 2023 |
| NU Roots Ltd | Other services | 2025 |
| Nu-Mode Menswear Limited | Wholesale & retail | 2023 |
| Nucleus Creative Ltd | Information & communication | 2025 |
| Nucleus Trading and Tech Ltd | Information & communication | 2025 |
| NUK Property Holdings Ltd | Real estate | 2025 |
| Nuna Barber Bury Limited | Other services | 2023 |
| Nursing Management Consultancy Services Ltd | Professional & scientific | 2021 |
| Nurture YOU Ltd | Health & social care | 2024 |
| Nutthutt Ltd | Administrative & support | 2017 |
| Nuvaniq Limited | Administrative & support | 2026 |
| Nuve Fragrance Ltd | Wholesale & retail | 2026 |
| Nuvera Collection Ltd | Wholesale & retail | 2025 |
| Nuvix Ltd | Administrative & support | 2024 |
| NW & MH Properties Ltd | Real estate | 2025 |
| NW Benefit Living Ltd | Real estate | 2026 |
| NW Card & Gift Agencies Ltd | Wholesale & retail | 2020 |
| NW Care Agency Limited | Health & social care | 2019 |
| NW Electrical Assessment Limited | Professional & scientific | 2017 |
| NW Floors Ltd | Construction | 2026 |
| NW Food and Drink Ltd | Hospitality | 2016 |
| NW Living Limited | Real estate | 2018 |
| NW Supported Living Ltd | Professional & scientific | 2025 |
| Nwcg Holdings Limited | Wholesale & retail | 2026 |
| Nwfh Holding Ltd | Financial services | 2025 |
| Nwfh SPV Ltd | Real estate | 2025 |
| Nwmis Holdings Limited | Financial services | 2026 |
| Nwnt Limited | Health & social care | 2026 |
| Nwnt-Ne Limited | Extraterritorial | 2020 |
| Nwre Services Limited | Administrative & support | 2021 |
| NWS Advisory Limited | Professional & scientific | 2010 |
| Nwsl Maintenance Limited | Households | 2025 |
| NWT Service Centre Ltd | Wholesale & retail | 2013 |
| NXS Group Ltd | Financial services | 2017 |
| Nyflex Limited | Manufacturing | 2017 |
| O'Brien Fire Consultancy Ltd | Public administration | 2022 |
| O'Connor Holdings Limited | Financial services | 2016 |
| O'Donnell Bros. Limited | Wholesale & retail | 1983 |
| O'Toole Lettings Ltd | Real estate | 2024 |
| O.W.H Fulfilment Ltd | Wholesale & retail | 2023 |
| Oak House Management (Cheadle Hulme) Limited | Hospitality | 1988 |
| Oak House Trading Limited | Manufacturing | 2021 |
| Oak Learning Partnership | Education | 2019 |
| Oakace Limited | Extraterritorial | 2026 |
| Oakbray Developments Ltd | Professional & scientific | 2003 |
| Oakclough Finance Limited | Financial services | 2023 |
| Oakland Joinery & Building Projects Ltd | Construction | 2023 |
| Oaklands Property Company Limited | Real estate | 2015 |
| Oaklee Lettings Ltd | Real estate | 2019 |
| Oakley Bespoke Plastering Ltd | Construction | 2025 |
| Oaktrail Renovations Ltd | Construction | 2025 |