| Norman Ashworth Limited | Construction | 1964 |
| Normskey Ltd | Households | 2018 |
| Nortada Ltd | Real estate | 2025 |
| North Glow Aesthetics Ltd | Other services | 2026 |
| North Manchester Properties Limited | Real estate | 1989 |
| North West Trade Ltd | Wholesale & retail | 2018 |
| North West Autism Centre Ltd | Public administration | 2025 |
| North West Community Connection CIC | Education | 2025 |
| North West Community Housing CIC | Real estate | 2025 |
| North West External Cleaning Limited | Administrative & support | 2010 |
| North West GAS Training & Assessment Limited | Other services | 2008 |
| North West Hybrid Breakers Ltd | Wholesale & retail | 2025 |
| North West Promotions (Health & Fitness) Ltd | Arts & recreation | 2005 |
| North West Property (Rochdale) Ltd | Real estate | 2019 |
| North West Solutions Limited | Construction | 2015 |
| North Western Centre (ACU) Limited | Arts & recreation | 1995 |
| North-West Fitters Ltd | Construction | 2025 |
| Northapex Construction Ltd | Construction | 2025 |
| Northbridge Logistics Recruitment Ltd | Administrative & support | 2026 |
| NORTHCARE4YOU Ltd | Health & social care | 2025 |
| Northcrest Living Property Solutions Ltd | Real estate | 2026 |
| Northdene Estates Ltd | Real estate | 2014 |
| Northdene Medical Services Ltd | Health & social care | 2013 |
| Northern Caravans Limited | Wholesale & retail | 2012 |
| Northern Embroidery & Print Limited | Manufacturing | 2017 |
| Northern Holdco Limited | Financial services | 2026 |
| Northern Joinery (Holdings) Limited | Manufacturing | 2006 |
| Northern Joinery Limited | Manufacturing | 1993 |
| Northern Star Commercials Limited | Wholesale & retail | 2014 |
| Northern Star Property Development Limited | Real estate | 2020 |
| Northjets Aviation Ltd | Transport & logistics | 2026 |
| Northside Ltd | Construction | 2023 |
| Northside Plant Ltd | Manufacturing | 2026 |
| Northstar NW Ltd | Transport & logistics | 2026 |
| Northwest Chauffeur Specialist Ltd | Transport & logistics | 2024 |
| Northwest French Speaking Alliance of Servants of GOD CIC | Education | 2024 |
| Northwest Locksmiths Ltd | Manufacturing | 2026 |
| Northwest Surgical Services Limited | Health & social care | 2012 |
| Northwest Tactical Ltd | Administrative & support | 2025 |
| Notitia Ignis Ltd | Professional & scientific | 2021 |
| Nouman Innovatins Ltd | Wholesale & retail | 2025 |
| Nova Space Ltd | Arts & recreation | 2021 |
| Novacore Medical Supplies Ltd | Wholesale & retail | 2026 |
| Novalearn Ltd | Education | 2026 |
| Novapath Education Consultancy Ltd | Education | 2026 |
| Novus Management Consultants Limited | Professional & scientific | 2025 |
| NP Medical Services Limited | Health & social care | 2023 |
| Npnw Ltd | Professional & scientific | 2020 |
| NPS Construction Ltd | Construction | 2024 |
| NPS Maintenance Ltd | Households | 2025 |
| NPS Roofing Ltd | Construction | 2025 |
| NR Prime Projects Ltd | Construction | 2024 |
| NRA Accountancy & Taxation Services Limited | Professional & scientific | 2017 |
| NRG Building Projects Ltd | Construction | 2026 |
| NRG Electrical Engineers Limited | Construction | 2013 |
| NRG Telecom Limited | Information & communication | 2002 |
| NRL Mortgages Ltd | Financial services | 2026 |
| NSM Builders & Developers Ltd | Construction | 2024 |
| NSM Enterprises Ltd | Wholesale & retail | 2019 |
| NSR Home Improvements Limited | Construction | 2016 |
| NTM Associates Ltd | Professional & scientific | 2006 |
| NU Comfort Solutions Ltd | Professional & scientific | 2021 |
| Nuage Bits Limited | Information & communication | 2025 |
| Nudl Software Limited | Information & communication | 2022 |
| Nueroot Ltd | Other services | 2024 |
| Numaan S Consultancy Ltd | Professional & scientific | 2025 |
| Nutraonda Limited | Wholesale & retail | 2020 |
| Nutrient Company (TNC) Limited | Hospitality | 2011 |
| Nuttall & Durrant Limited | Professional & scientific | 1962 |
| Nutts Limited | Professional & scientific | 2022 |
| Nuvocare Ltd | Administrative & support | 2018 |
| NW Professional Services Limited | Professional & scientific | 2023 |
| NXT Auto Ltd | Wholesale & retail | 2026 |
| NYE Bevan Optical Ltd | Wholesale & retail | 2026 |
| Nyla & COA Ltd | Health & social care | 2026 |
| NYN Couriers Ltd | Transport & logistics | 2021 |
| NÚR Events Ltd | Hospitality | 2024 |
| O & J Bargh Properties Limited | Real estate | 2024 |
| O J Projects Limited | Professional & scientific | 2024 |
| O My Goodies Ltd | Hospitality | 2024 |
| O Y Holdings Ltd | Wholesale & retail | 2021 |
| O'Donnell Property Ltd | Real estate | 2023 |
| O-Jay Trading Limited | Manufacturing | 2009 |
| O.N.E Window Cleaning Ltd | Administrative & support | 2023 |
| O.R Accountants Limited | Professional & scientific | 2025 |
| O.S.S.(Manchester) Ltd | Administrative & support | 2011 |
| O3 Performance Ltd | Other services | 2019 |
| Oak & Line Interiors Ltd | Construction | 2026 |
| Oak Fencing & Landscaping Limited | Other services | 2026 |
| Oakbank Properties Limited | Construction | 2001 |
| Oakenrod Villas Limited | Households | 1991 |
| Oakleaf (NW) Limited | Financial services | 2006 |
| Oakstone Development Group Limited | Construction | 2026 |
| Oaktree Business Support Partners Ltd | Administrative & support | 2022 |
| Oaktree Home Watch Ltd | Real estate | 2020 |
| Oakwood Developments NW Ltd | Construction | 2018 |
| Oakwood House (UK) Ltd | Professional & scientific | 2013 |
| Oarao Limited | Information & communication | 2018 |
| OB Pitches Ltd | Construction | 2025 |
| OBJECH2 Limited | Information & communication | 2011 |