| NIM Patel Consultancy Limited | Professional & scientific | 2015 |
| Nimbus ERP Ltd | Information & communication | 2022 |
| Nimbus Learning Ltd | Information & communication | 2017 |
| Nine Acres (Tiptree) Management Company Limited | Households | 2018 |
| Nine Turning Mirrors Ltd | Information & communication | 2022 |
| Ninebark Media Ltd | Information & communication | 2023 |
| Ninety Plus Coaching Academy Ltd | Arts & recreation | 2026 |
| Nirhudson Limited | Other services | 2019 |
| Nisa Michaels (Shirley) Limited | Transport & logistics | 2005 |
| Nite Xchange Limited | Other services | 2022 |
| Nivedita JAY Ltd | Transport & logistics | 2026 |
| NJ Property Investments 10 Limited | Real estate | 2020 |
| NJ Property Investments 7 Ltd | Real estate | 2024 |
| NJC Safety First Ltd | Education | 2024 |
| NJK Services Ltd | Information & communication | 2019 |
| Njuk Development Ltd | Households | 2021 |
| NK Capital Limited | Real estate | 2022 |
| NK Dental Practice Limited | Health & social care | 2022 |
| NK Food 2020 Limited | Hospitality | 2020 |
| NK Medics Health Ltd | Health & social care | 2022 |
| NK Properties Solihull Limited | Construction | 2025 |
| NKH Solutions Ltd | Information & communication | 2024 |
| NKR Locks & Property Services Ltd | Construction | 2023 |
| NLB Finance Limited | Financial services | 2024 |
| NLM Technical Services Ltd | Professional & scientific | 2015 |
| NLP Associates Limited | Health & social care | 2022 |
| NM Surveying Ltd | Real estate | 2012 |
| Nmama Property Investment & Holiday Homes Ltd | Households | 2025 |
| Nmaroy Property Ltd | Real estate | 2022 |
| NMB Projects Ltd | Administrative & support | 2016 |
| NMJ Consultant Services Ltd | Professional & scientific | 2025 |
| Nmsm Investments Ltd | Real estate | 2019 |
| NNG Homes Ltd | Real estate | 2024 |
| Nnnco UK Limited | Financial services | 2025 |
| NO Boundaries Entertainment Limited | Information & communication | 2001 |
| NO Fuss Cremations Limited | Other services | 2021 |
| NO Goodd Ltd | Professional & scientific | 2025 |
| NO Thirty One Ltd | Wholesale & retail | 2023 |
| NO Throw Ltd | Manufacturing | 2023 |
| NO. 1 Dove House Parade Ltd | Hospitality | 2019 |
| NO.1 Establishment Limited | Administrative & support | 2024 |
| NO.1 Smart Tiling App Ltd | Information & communication | 2025 |
| NO.1 Tile Store Ltd | Wholesale & retail | 2025 |
| NO.1 Tiling Academy Ltd | Education | 2025 |
| NO.1 Tiling Group Ltd | Construction | 2025 |
| NO.1 Tiling Service Ltd | Construction | 2022 |
| NO.22 Coffee Limited | Hospitality | 2019 |
| No.S 1-12 Clarence Grove Residents Management Company Ltd | Households | 2021 |
| Noahclothing Ltd | Wholesale & retail | 2025 |
| Noble Holdings Group | Financial services | 2022 |
| NOM NOM Bakes Ltd | Manufacturing | 2020 |
| NON Facture (Birmingham) Limited | Information & communication | 2014 |
| None Ventures Limited | Professional & scientific | 2022 |
| Nookd Ltd | Manufacturing | 2026 |
| Nookhome Limited | Wholesale & retail | 2025 |
| Nooklife Limited | Professional & scientific | 2021 |
| Noprblm Ltd | Information & communication | 2025 |
| Nordic Rehab Ltd | Health & social care | 2009 |
| Norson Plant Ltd | Construction | 2014 |
| North and South Education CIC | Education | 2022 |
| North East Roof Truss Limited | Manufacturing | 2011 |
| North Pole Stores Ltd | Wholesale & retail | 2025 |
| North Solihull Partnership LP | | 2005 |
| North Warren Care Limited | Other services | 2003 |
| North West Equity Fund Limited Partnership | | 2002 |
| Northcot Brick Limited | Manufacturing | 1951 |
| Northdown Oaks Residents Limited | Households | 2010 |
| Northern Homes Developments Limited | Real estate | 1988 |
| Northface HOMES99 Ltd | Real estate | 2024 |
| Northfield Pharma Ltd | Wholesale & retail | 2025 |
| Northscale Partnership Limited | Professional & scientific | 2026 |
| Northwest Veterinary Specialists Limited | Professional & scientific | 2002 |
| Northwick Developments Limited | Professional & scientific | 2019 |
| Northwood Solihull Limited | Real estate | 2005 |
| Norton Automotive Limited | Wholesale & retail | 2022 |
| Norton Homes Limited | Other services | 2011 |
| Norton Leys Management Co. Limited | Administrative & support | 2005 |
| Norton Properties (Solihull) Limited | Real estate | 2017 |
| Noshaq Structural Services Ltd | Professional & scientific | 2018 |
| Noshi B NOM NOM Ltd | Hospitality | 2023 |
| Nostradamus IT Ltd | Information & communication | 2024 |
| Notaro Kier LLP | | 2017 |
| Notley Grange Residents Management Company Limited | Households | 2017 |
| Notstrictlyjazz Limited | Professional & scientific | 2012 |
| Nottac Construction Ltd | Construction | 2020 |
| Nour Alghazal Ltd. | Health & social care | 2011 |
| Nourhousing Ltd | Real estate | 2024 |
| Nova Retreats Ltd | Hospitality | 2023 |
| Nova Stars Group Ltd | Financial services | 2026 |
| Nova-Aroons Trading Limited | Wholesale & retail | 2025 |
| Novaflare Innovations Ltd | Extraterritorial | 2026 |
| Novaflow Solutions Ltd | Professional & scientific | 2025 |
| Novara Consultants Ltd | Information & communication | 2024 |
| Novate Legal Search Limited | Administrative & support | 2022 |
| Novatio Ltd | Construction | 2026 |
| Novo Interiors Ltd | Other services | 2015 |
| NOW This Limited | Extraterritorial | 2018 |
| Noyaba Limited | Health & social care | 2025 |
| Nozomi Labs Ltd | Wholesale & retail | 2025 |
| NPS Law LLP | Professional & scientific | 2012 |