| Nicholas Payne Ltd | Financial services | 2019 |
| Nicjad Medical Limited | Health & social care | 2025 |
| Nick Grew Limited | Health & social care | 2023 |
| Nick Winters Hides & Skins (UK) Limited | Wholesale & retail | 2006 |
| Nickeillaproducts Ltd | Wholesale & retail | 2025 |
| Nico-Com Limited | Construction | 2021 |
| Nicole's Cards & Gifts Limited | Wholesale & retail | 2014 |
| Nicos Logistic Ltd | Other services | 2020 |
| Nics Wellbeing C.I.C. | Health & social care | 2023 |
| Nicu Servise Ltd | Wholesale & retail | 2023 |
| Nidex Limited | Wholesale & retail | 2017 |
| Nigel Benn Holdings Limited | Extraterritorial | 2015 |
| Nigel Benn Limited | Extraterritorial | 2015 |
| Nigel Flook Consulting Ltd | Professional & scientific | 2014 |
| Nigel Sutherland Designs Limited | Arts & recreation | 1991 |
| Nigerian Brit Business Forum Limited | Other services | 2021 |
| Nigerian Muslim Community Wolverhampton CIC | Other services | 2025 |
| Night Express Limited | Transport & logistics | 2011 |
| Night Life Essentials Limited | Wholesale & retail | 2026 |
| Night OWL Security (West Midlands) Limited | | 1996 |
| Nightingale Consultancy Ltd | Information & communication | 2012 |
| Nightingale Fibre Limited | Information & communication | 2025 |
| Nightingale Partnerships Ltd | Other services | 2019 |
| Nightingale Properties Ltd | Real estate | 2023 |
| Nihal Service Limited | Transport & logistics | 2016 |
| Nihiaces Ltd | Wholesale & retail | 2025 |
| Nijjar Property Holdings Ltd | Real estate | 2017 |
| Nijjar Supermarket Limited | Wholesale & retail | 2011 |
| Nikita Sounds Ltd | Wholesale & retail | 2025 |
| Nikkou Holdings Limited | Construction | 2025 |
| Nikmalo Labs Academy Ltd | Information & communication | 2025 |
| Nile Pharaohs Limited | Real estate | 2008 |
| Nilsoft Limited | Agriculture & fishing | 2004 |
| Nimos Group Limited | Hospitality | 2016 |
| Nimtech Consults Ltd | Transport & logistics | 2024 |
| NIN Capital Limited | Real estate | 2016 |
| Nindatoor Transport Ltd | Transport & logistics | 2023 |
| Nintex Softwares Ltd | Information & communication | 2026 |
| Niora Marketing Ltd | Professional & scientific | 2026 |
| Niqolas Bassano Limited | Wholesale & retail | 2013 |
| Nirbhau Ltd | Professional & scientific | 2020 |
| Nirmal Gakhal Ltd | Real estate | 2021 |
| Nirvair Limited | Wholesale & retail | 2014 |
| Nisbet Holdings Ltd | Administrative & support | 2026 |
| Nish Transport Ltd | Transport & logistics | 2024 |
| Nishti's Choice Ltd. | Health & social care | 2017 |
| Nisolut Limited | Wholesale & retail | 2021 |
| Nissi Community CIC | Water & waste | 2026 |
| Nissi Homes Limited | Public administration | 2010 |
| Nitishapatelfoods Limited | Hospitality | 2017 |
| Niva Commerce Ltd | Information & communication | 2024 |
| Nivas Global Limited | Real estate | 2024 |
| Nivisor Consults Ltd | Professional & scientific | 2014 |
| NIX Service Stations Limited | Wholesale & retail | 2004 |
| Nixaestus Ltd | Transport & logistics | 2021 |
| NJ & LR Upton Limited | Real estate | 2018 |
| NJA Accountancy Solutions Ltd | Financial services | 2008 |
| Njanji Association Limited | Other services | 2010 |
| NJB Accountancy Ltd | Professional & scientific | 2024 |
| NJH Consultancy & Marketing Ltd | Professional & scientific | 2019 |
| NJK Estates Limited | Real estate | 2026 |
| Njmachin Recruitment Ltd | Administrative & support | 2026 |
| NK Cakes Ltd | Manufacturing | 2021 |
| NK Hair and Beauty Academy Ltd | Other services | 2025 |
| NK Optical Services Limited | Health & social care | 2023 |
| NK Photography & Film Ltd | Information & communication | 2025 |
| NK Property Management Ltd | Real estate | 2010 |
| NK UK Holdings Limited | Financial services | 2025 |
| NK UK Property Limited | Real estate | 2025 |
| NKB London UK Ltd | Wholesale & retail | 2018 |
| Nkenji & Sons Limited | Real estate | 2024 |
| NKG Consulting Ltd | Professional & scientific | 2026 |
| NKJ 2023 Ltd | Real estate | 2023 |
| NKL Pharma Ltd | Professional & scientific | 2021 |
| NKM Support Ltd | Health & social care | 2024 |
| Nkong Healthcare Limited | Health & social care | 2022 |
| NKP Accountants Ltd | Professional & scientific | 2026 |
| NKR Foods Limited | Hospitality | 2021 |
| Nkss Transport Ltd | Transport & logistics | 2025 |
| Nkunda Limited | Wholesale & retail | 2022 |
| NL Buildings Ltd | Construction | 2023 |
| NM Services Ltd | Administrative & support | 2025 |
| NMJ Estates Limited | Real estate | 2025 |
| Nmjservicecompany Ltd | Administrative & support | 2023 |
| Nmkd World UK Ltd | Wholesale & retail | 2026 |
| Nmmbo Limited | Financial services | 2020 |
| Nmrs Midland Limited | Professional & scientific | 2020 |
| NN Dance Academy Ltd | Arts & recreation | 2026 |
| Nnabugwu-Bugo Onyeukwu Limited | Health & social care | 2022 |
| Nnbr Property Services CIC | Construction | 2023 |
| NO Credit Checks Ltd | Wholesale & retail | 2026 |
| NO Limit Multi Resources Company Ltd | Wholesale & retail | 2025 |
| NO Limits to Health CIC | Administrative & support | 2020 |
| NO March Left Behind Ltd | Administrative & support | 2025 |
| NO Pain NO Gain Fitness Ltd | Wholesale & retail | 2021 |
| NO Sleep Club Ltd | Wholesale & retail | 2026 |
| NO. 1 Peri Peri Chicken Ltd | Hospitality | 2018 |
| NO1 Better Limited | Wholesale & retail | 2009 |
| NO1 Tutors Ltd | Education | 2012 |
| Noah Care Group Ltd | Health & social care | 2023 |