| Neptune Car Spares Ltd | Water & waste | 2006 |
| Nergis Limited | Hospitality | 2025 |
| Nesanzhub Ltd | Information & communication | 2026 |
| Net's Cafe (Wirral) Limited | Hospitality | 2014 |
| Nettleshop Ltd | Hospitality | 2023 |
| Neuronova Systems Ltd | Information & communication | 2025 |
| Nevwyn Management Limited | Financial services | 2009 |
| New Beginnings Young People's Care and Support Services Ltd | Health & social care | 2017 |
| New Chung WAH Ltd | Hospitality | 2023 |
| New Field Joinery Limited | Manufacturing | 2008 |
| New Look Nice Barber Wallasey Ltd | Other services | 2022 |
| Neway Industrial and Environmental Services Limited | Manufacturing | 2008 |
| Newco Concrete Products Ltd | Construction | 2014 |
| Nexro Limited | Wholesale & retail | 2025 |
| Next Chapter Media Limited | Professional & scientific | 2018 |
| Nextgen Power Solutions Ltd | Construction | 2025 |
| Nexusedge Limited | Information & communication | 2025 |
| NGM Construction Services Limited | Construction | 2020 |
| NH Auto Centre Ltd | Wholesale & retail | 2023 |
| NH Autos Northwest Ltd | Wholesale & retail | 2025 |
| Nibu Naturals Ltd | Other services | 2019 |
| Nightingales Recovery Café CIC | Hospitality | 2019 |
| Nirjara Limited | Hospitality | 2025 |
| Niross Limited | Professional & scientific | 2016 |
| NJ Suppliers Limited | Wholesale & retail | 2018 |
| NJB Sourcing Ltd | Real estate | 2025 |
| NL Inspection Limited | Manufacturing | 2025 |
| NLW Inspection Ltd | Construction | 2017 |
| NM Classic & Retro Limited | Wholesale & retail | 2011 |
| NM Wealth Limited | Financial services | 2011 |
| NO Hassall Motor Services Ltd | Wholesale & retail | 2023 |
| NO Limits Recovery Services CIC | Education | 2022 |
| Noble West Limited | Wholesale & retail | 2011 |
| Noiff Investment Company | Financial services | 2021 |
| Nolan Crew Transfers Limited | Transport & logistics | 2021 |
| Noonan Close Management Company Limited | Professional & scientific | 2011 |
| North West Hyperbaric Centre Ltd | Health & social care | 2018 |
| North West Murals Limited | Construction | 2006 |
| North West Offshore Survival and Maritime Centre Ltd | Education | 2018 |
| North West Vocational College Ltd | Education | 2019 |
| NORTH2SOUTH Holdings Ltd | Real estate | 2025 |
| Northern Wolf Trading Company Limited | Information & communication | 2017 |
| Northwest EV Installations Ltd | Construction | 2025 |
| Northwest GAS Solutions Ltd | Construction | 2020 |
| Northwest Property Capital Ltd | Real estate | 2026 |
| Northwich Mini Market Limited | Wholesale & retail | 2024 |
| NOT Your Babe Ltd | Administrative & support | 2021 |
| Nottage Bar Supplier Limited | Wholesale & retail | 2012 |
| Noughts & Kisses Limited | Wholesale & retail | 2016 |
| Nourique Ltd | Wholesale & retail | 2025 |
| Nova Labs Limited | Information & communication | 2026 |
| Novaflex Limited | Administrative & support | 2008 |
| Novos Consultants Limited | Professional & scientific | 2020 |
| Noya SJH Ltd | Hospitality | 2025 |
| NRC Industrial Services Limited | Water & waste | 2023 |
| NRP Trans Ltd | Transport & logistics | 2025 |
| NSE Electrical Services Limited | Construction | 2010 |
| NTC School DE Luchtballon | Education | 2014 |
| Nuda Group Ltd | Hospitality | 2026 |
| Nuevaclo Ltd | Wholesale & retail | 2025 |
| Number 32 Ltd | Hospitality | 2019 |
| Nurtura by Blum Ltd | Information & communication | 2026 |
| Nuta Travel Ltd | Transport & logistics | 2019 |
| NW Property Ventures Ltd | Real estate | 2026 |
| NW Trading (Commodities) Limited | Wholesale & retail | 2006 |
| NW Trading (Haulage) Limited | Transport & logistics | 2000 |
| NW Trading (Southampton) Limited | Transport & logistics | 2008 |
| NWB Productions Ltd | Information & communication | 2019 |
| NWT Group Limited | Financial services | 2018 |
| Nylah Jayz Cosmetics Ltd | Wholesale & retail | 2023 |
| Nyth Limited | Real estate | 2018 |
| Nyws Investment Company | Financial services | 2022 |
| O'Rourke Construction Ltd | Construction | 2016 |
| O'Rourke Holdings Group Ltd | Real estate | 2022 |
| O'Rourke Plant Limited | Administrative & support | 2022 |
| Oakbank Flat Management Company (NO.2) Limited | Administrative & support | 2002 |
| Oakleigh Healthcare (Dudley) Limited | Health & social care | 2010 |
| Obsidian Environmental Limited | Water & waste | 1999 |
| Occusense Ltd | Information & communication | 2023 |
| Ocean Learning and Development Limited | Extraterritorial | 2024 |
| Ocmahon Ltd | Wholesale & retail | 2025 |
| Octopus Cleaning Ltd | Administrative & support | 2020 |
| ODD Glass Creative Ltd | Information & communication | 2021 |
| Odin Transport Ltd | Transport & logistics | 2022 |
| OEL Service Limited | Administrative & support | 2025 |
| Offerlogic Limited | Professional & scientific | 2025 |
| Office Force Limited | Administrative & support | 2010 |
| Offshore Survival Centre Limited | Education | 2018 |
| OGK Mini Market Ltd | Wholesale & retail | 2025 |
| Ohmen Electrical Ltd | Construction | 2025 |
| Olive Tree Domiciliary Services Ltd | Health & social care | 2010 |
| Olivia Victoria Developments Ltd | Construction | 2026 |
| Olivia Victoria Holdings (NW) Ltd | Real estate | 2022 |
| Ollocs Limited | Construction | 2016 |
| Ollys Training Care Ltd | Health & social care | 2026 |
| OLY MAR Ltd | Transport & logistics | 2026 |
| Omniyati Partners Limited | Hospitality | 2024 |
| ON and Gone Logistics Ltd | Transport & logistics | 2025 |
| One Economy Ltd | Administrative & support | 2014 |
| One Shot Photographer Ltd | Professional & scientific | 2025 |