| Navaratec Group Ltd | Financial services | 2026 |
| Navco Trading Ltd | Health & social care | 2026 |
| Navinchandra Limited | Real estate | 2020 |
| Navithoughts Ltd | Wholesale & retail | 2023 |
| Naysay Productions Ltd | Administrative & support | 2023 |
| Nazarium Construction Ltd | Construction | 2024 |
| Nazebourne Poultry Farm Limited | Construction | 2018 |
| NCC Restaurant Ltd | Hospitality | 2014 |
| Ncva Investments Limited | Real estate | 2023 |
| ND Capital Ltd | Financial services | 2026 |
| NDE Decorators Limited | Administrative & support | 2006 |
| Ndgp Construction Ltd | Construction | 2026 |
| Ndiaye Property Limited | Construction | 2025 |
| Ndpproperties Limited | Real estate | 2019 |
| Neary Developments Limited | Real estate | 2022 |
| Nectar Setters Ltd | Arts & recreation | 2024 |
| Neda Health Limited | Professional & scientific | 2012 |
| Neel-Om Consultancy Ltd | Administrative & support | 2014 |
| Negotia Postulanda Ltd | Professional & scientific | 2024 |
| Nelliphants Ltd | Education | 2020 |
| Neoade Ltd | Administrative & support | 2019 |
| Nerd Properties Limited | Financial services | 2021 |
| Nerdex Limited | Construction | 2025 |
| Nesga Ltd | Real estate | 2022 |
| Nestor Technologies Ltd | Information & communication | 2015 |
| Nestrades Ltd | Wholesale & retail | 2026 |
| Netball Leagues Limited | Arts & recreation | 2019 |
| Netcomms Care Ltd | Other services | 2023 |
| Netseven Limited | Real estate | 2006 |
| Nettlesoup Productions Limited | Professional & scientific | 2013 |
| Nettoyage Prime Solutions Limited | Administrative & support | 2025 |
| Netui Ltd | Information & communication | 1997 |
| Neture Ltd | Wholesale & retail | 2019 |
| Neuross Limited | Health & social care | 2015 |
| Neurovate Ltd | Professional & scientific | 2025 |
| Nevernhog Limited | Administrative & support | 2015 |
| New Chapter Accountancy Limited | Professional & scientific | 2025 |
| New Faze Films Ltd | Information & communication | 2015 |
| New Granville LLP | | 2013 |
| New Home 4YOU Ltd | Hospitality | 2019 |
| New House Flooring Limited | Construction | 2019 |
| New Ladderswood LLP | | 2011 |
| New Life Art Ministries | Arts & recreation | 2011 |
| New Life Building and Maintenance Ltd | Construction | 2019 |
| New Star Exclusive Cleaning Ltd | Administrative & support | 2018 |
| New TEC Carpentry Limited | Construction | 2005 |
| New Tide Business Solutions Limited | Administrative & support | 2009 |
| Newham Independents Party Ltd | Other services | 2024 |
| Newincco 760 Limited | Construction | 2007 |
| Newland Hall Holding Ltd | Financial services | 2025 |
| Newman`S Electricals Limited | Administrative & support | 2006 |
| Newnham Consulting Limited | Administrative & support | 2008 |
| Newstay Properties Limited | Construction | 2015 |
| Nexa Build Ltd | Construction | 2023 |
| Nexa Civils Ltd | Construction | 2022 |
| Nexcom Limited | Information & communication | 2023 |
| Nexcroft Limited | Real estate | 1977 |
| Next Generation Records Ltd. | Administrative & support | 1998 |
| Next Play Group Limited | Arts & recreation | 2018 |
| Next Step Resourcing Solutions Limited | Professional & scientific | 2021 |
| Nextday+ Ltd | Manufacturing | 2026 |
| Nexus MWS Ltd | Administrative & support | 2026 |
| Nexus Polaris Consultancy Limited | Professional & scientific | 2024 |
| Nexuscap Ltd | Professional & scientific | 2026 |
| Nezaj Plumbing & Heating Ltd | Construction | 2015 |
| NGW LON Ltd | Professional & scientific | 2017 |
| NH Property Developments Limited | Construction | 2022 |
| Nhbd Property Investment 1 Ltd | Construction | 2024 |
| NIC Knight Mgmt Ltd. | Professional & scientific | 2014 |
| Nice Dragon Productions Limited | Information & communication | 2012 |
| NICE1STEVE Limited | Other services | 2018 |
| Nichee Ltd | Information & communication | 2026 |
| Nicholas Hall (FP) Limited | Professional & scientific | 2024 |
| Nicholas Hall Accounting Limited | Professional & scientific | 2024 |
| Nicholas RO Services Limited | Transport & logistics | 2014 |
| Nicholas Stephens Construction Limited | Construction | 1986 |
| Nicholas Stephens Developments Limited | Real estate | 2018 |
| Nicholls Home Improvements Ltd | Construction | 2019 |
| NICKSMITH87 Limited | Professional & scientific | 2019 |
| Nicole and Emma Management Limited | Real estate | 2024 |
| Nieberg Estates Limited | Real estate | 2016 |
| Nijoel Ltd | Real estate | 2026 |
| NIK Kolev Ltd | Construction | 2015 |
| Nikconsultancy Ltd | Professional & scientific | 2015 |
| Nikiko Limited | Other services | 2010 |
| Niko Build 21 Ltd | Construction | 2019 |
| Nimkon Limited | Real estate | 2019 |
| Nimpx Ltd | Manufacturing | 2018 |
| Ninu Lavish Limited | Wholesale & retail | 2017 |
| Nipa Solutions Limited | Information & communication | 2021 |
| Nirvan IT Ltd | Information & communication | 2017 |
| Nisha's Beauty Ltd | Other services | 2025 |
| Nizamani Immigration Services Limited | Information & communication | 2025 |
| NK Blueprint Consultancy Limited | Administrative & support | 2017 |
| NK Realty Limited | Real estate | 2025 |
| NKB Machinery Ltd | Administrative & support | 2011 |
| NKD Tech Ltd | Wholesale & retail | 2023 |
| NKN Anaesthetics Ltd | Health & social care | 2013 |
| NKN Consulting Ltd | Professional & scientific | 2022 |
| NKN Productions Limited | Arts & recreation | 2008 |