| Nexus Electrical Contractors Limited | Construction | 2018 |
| Nexus Family Ltd | Health & social care | 2023 |
| Nexus Properties Limited | Real estate | 2004 |
| Nexus Realty Limited | Real estate | 2014 |
| Nexus Solutionz Ltd | Information & communication | 2025 |
| Nexus Sources Ltd | Administrative & support | 2025 |
| Nexus Two Limited | Wholesale & retail | 2008 |
| Nexusasianenterprise Ltd | Wholesale & retail | 2025 |
| Nexvora Trading Ltd | Wholesale & retail | 2026 |
| Nexxus Academy Ltd | Education | 2024 |
| Neya Taste Limited | Manufacturing | 2014 |
| Neykay Labs Ltd | Wholesale & retail | 2024 |
| NF Training (Leicester) Ltd | Professional & scientific | 2020 |
| NFC Limited | Wholesale & retail | 2025 |
| NFK Healthcare Limited | Health & social care | 2010 |
| NFS Properties Ltd | Real estate | 2017 |
| NG Coleman Ltd | Other services | 2022 |
| NG Medics Ltd | Health & social care | 2022 |
| NG Recruit Ltd | Administrative & support | 2024 |
| NG12 Projects Ltd | Construction | 2022 |
| Ngagi (UK) Limited | Health & social care | 2021 |
| NGB Chem Ltd | Wholesale & retail | 2026 |
| NGH Holdings Limited | Financial services | 2017 |
| Nghoting Limited | Real estate | 2025 |
| Ngkr Limited | Health & social care | 2023 |
| NGP Properties Limited | Real estate | 2016 |
| NGP Rental Properties LLP | | 2025 |
| NGR Interactive Limited | Information & communication | 2011 |
| Ngrave Ltd | Extraterritorial | 2025 |
| NGS Facilities Management Ltd | Administrative & support | 2023 |
| NH Hort Ltd | Professional & scientific | 2026 |
| Nhauf Ltd | Health & social care | 2022 |
| Nhelu Traders Ltd | Wholesale & retail | 2025 |
| NHF Commercials Ltd | Real estate | 2025 |
| NHH Construction Limited | Construction | 2022 |
| NHI (Leicester) Ltd | Wholesale & retail | 2022 |
| NHL Consultants Limited | Professional & scientific | 2008 |
| NHP Property Limited | Real estate | 2022 |
| NHR Solutions Limited | Information & communication | 2025 |
| Nhub Ltd | Professional & scientific | 2017 |
| Nhughes Ltd | Wholesale & retail | 2020 |
| NIA Avanna Limited | Professional & scientific | 2024 |
| NIA Property Development Ltd | Construction | 2022 |
| Niaah Properties Limited | Real estate | 2018 |
| Nibbana Limited | Wholesale & retail | 2011 |
| Nibham Civil and Site Engineering Ltd | Construction | 2019 |
| NIC & Robert Ltd | Transport & logistics | 2019 |
| NIC Allen Consulting Ltd | Professional & scientific | 2026 |
| NIC Consultancy Services Ltd | Professional & scientific | 2024 |
| NIC Olsen | Financial services | 2009 |
| Nice Desserts Ltd | Manufacturing | 2014 |
| Nice Products Limited | Wholesale & retail | 2017 |
| Niche Bakery Limited | Manufacturing | 2023 |
| Niche Commerce Ltd | Wholesale & retail | 2023 |
| Niche Foods Limited | Other services | 2005 |
| Niche Global Ltd | Manufacturing | 2025 |
| Niche Group Holdings Limited | Financial services | 2024 |
| Nicholas Care Limited | Extraterritorial | 2018 |
| Nicholas Eaton Construction Ltd | Construction | 2022 |
| Nicholas Greaves Associates Ltd | Administrative & support | 2019 |
| Nicholls Colton Group Limited | Professional & scientific | 2005 |
| Nicholson Houlihan Ltd | Real estate | 2023 |
| Nick Associates Imaging Limited | Health & social care | 2025 |
| Nick Associates Limited | Health & social care | 2010 |
| Nick Associates Properties Limited | Real estate | 2025 |
| Nick Bluebell Trading Ltd | Wholesale & retail | 2018 |
| Nick Dunn Enterprises Limited | Real estate | 2016 |
| Nick Howard Planning Limited | Professional & scientific | 2026 |
| Nick Kingsley Music Ltd | Information & communication | 2021 |
| Nick Lacatus Transport Ltd | Transport & logistics | 2021 |
| Nick Leicester Limited | Hospitality | 2022 |
| Nick's Future Entertainment Ltd | Information & communication | 2025 |
| Nick's OFF Licence & Grocery Ltd | Wholesale & retail | 2011 |
| Nick's Salvage Repairs Ltd | Wholesale & retail | 2026 |
| Nickindian Limited | | 2003 |
| Nicks Maharajah Tours Ltd | Administrative & support | 2015 |
| Nicks Travel Group Limited | Administrative & support | 2023 |
| Nicmads Limited | Health & social care | 2008 |
| Nico 2014 Limited | Transport & logistics | 2014 |
| Nico Events Ltd | Professional & scientific | 2025 |
| Nico Maintenance Solutions Ltd | Construction | 2021 |
| Nico Properties (Leicester) Ltd | Construction | 2017 |
| Nico Properties (Sales & Lettings) Ltd | Real estate | 2019 |
| Nicola Jordan Legal Services Limited | Information & communication | 2022 |
| Nicolvan Ltd | Transport & logistics | 2020 |
| Nicoruss. Ltd | Transport & logistics | 2013 |
| Nicotine Replacements Limited | Wholesale & retail | 2021 |
| Nidar Trading Ltd | Wholesale & retail | 2025 |
| Nidhi Construction Ltd | Construction | 2018 |
| Nifes Property Limited | Professional & scientific | 2015 |
| Nigel Cooke Limited | Professional & scientific | 2022 |
| Nigel North Limited | Administrative & support | 2003 |
| Nigel R. Kinch Haulage Limited | Transport & logistics | 2004 |
| Night and Day Leicester Ltd | Health & social care | 2022 |
| Nightlife Lotto CIC | Arts & recreation | 2026 |
| Nihal Haulage Limited | Transport & logistics | 2025 |
| Nihal Midlands Construction Ltd | Construction | 2021 |
| Niikam Ltd | Wholesale & retail | 2018 |
| Nijius Maximus Nain Skilled Risk-Taking Ltd. | Financial services | 2016 |
| Nijjar Printing Limited | Manufacturing | 1992 |