| N20CLOTHING Limited | Wholesale & retail | 2024 |
| N2K Fast Food Ltd | Hospitality | 2025 |
| N3 Homes Limited | Real estate | 2022 |
| N8O Ventures Ltd | Transport & logistics | 2026 |
| NA Holdings Midlands Ltd | Financial services | 2025 |
| NA Paving Elite Ltd | Construction | 2025 |
| Naan Express Ltd | Manufacturing | 2025 |
| Naavina Aesthetics Ltd | Other services | 2025 |
| Nabildelivers Limited | Transport & logistics | 2026 |
| Nadia&Dominic Limited | Transport & logistics | 2021 |
| Naexpress 1 Ltd | Transport & logistics | 2023 |
| Naffitle Ltd | Health & social care | 2021 |
| Nagington Construction Group Limited | Construction | 2026 |
| Nail Bar 19 Ltd | Other services | 2024 |
| Nail Perfection 91 Ltd | Other services | 2025 |
| Nails 4 YOU Lincolnshire Limited | Other services | 2023 |
| Nails by Annabel Limited | Transport & logistics | 2017 |
| Najaah Ltd | Real estate | 2020 |
| Nakoro Limited | Administrative & support | 2026 |
| Nalow Ltd | Wholesale & retail | 2024 |
| Naltrun Ltd | Hospitality | 2022 |
| Nambardaar Properties Ltd | Households | 2025 |
| Nana's Private Hire Ltd | Transport & logistics | 2019 |
| Nana's Travel Ltd | Transport & logistics | 2026 |
| Nano Lancing Ltd | Administrative & support | 2023 |
| Nantwich Refrigeration Services LLP | | 2004 |
| Napalm Strength & Conditioning Ltd | Arts & recreation | 2021 |
| Narinder Sanghera Ltd | Health & social care | 2010 |
| Naruto Retail Limited | Wholesale & retail | 2025 |
| Nasgos Leisure Ltd | Hospitality | 2021 |
| Nashama Trade UK Ltd | Wholesale & retail | 2025 |
| Nashworld Ltd | Health & social care | 2023 |
| Nasr Services Ltd | Health & social care | 2022 |
| Nassau Industrial Doors Limited | Construction | 1994 |
| Nastrade UK Ltd | Wholesale & retail | 2025 |
| Nastyddd Limited | Wholesale & retail | 2025 |
| Natalie Denise Jones Limited | Professional & scientific | 2016 |
| Natelycon Limited | Information & communication | 2024 |
| Nathan Charles Property Developments Limited | Construction | 2014 |
| Nathan Rose Care Ltd | Health & social care | 2024 |
| National Grab Ltd | Administrative & support | 2016 |
| National Hearing Care UK Limited | Wholesale & retail | 2018 |
| National Operator Training Licensing Scheme Limited | Education | 2017 |
| National Vehicle Assessors Ltd | Other services | 2021 |
| National Veterinary Services Limited | Wholesale & retail | 2013 |
| Nationwide Dust Filtration Specialists Ltd | Manufacturing | 2019 |
| Nationwide Hiab Hire & Haulage Ltd | Transport & logistics | 2022 |
| Nationwide Property Auctions Ltd | Households | 2025 |
| Nationwide Roofing Services Ltd | Construction | 2025 |
| Nationwide Safety Training Limited | Professional & scientific | 2012 |
| Nationwide Securities & Electrical Limited | Construction | 2005 |
| Nationwide Silo Access Services Ltd | Construction | 2009 |
| Native Strangers Ltd | Information & communication | 2023 |
| Nato Medical Services Ltd | Health & social care | 2017 |
| Natural Glow by MD Ltd | Other services | 2025 |
| Natural Healing Massage Spa Ltd | Health & social care | 2023 |
| Natural Product Solutions Ltd | Administrative & support | 2009 |
| Natural Taste U.K Ltd | Wholesale & retail | 2024 |
| Nature's Dream Limited | Wholesale & retail | 1999 |
| Natures Law Ltd | Professional & scientific | 2025 |
| Navnish Properties Ltd | Real estate | 2017 |
| NAWAZ786 Properties Ltd | Real estate | 2026 |
| Naya Systems Ltd | Information & communication | 2025 |
| Nayas Tyres Ltd | Wholesale & retail | 2025 |
| Nayiager Limited | Health & social care | 2018 |
| NAZ Fabric Ltd | Wholesale & retail | 2025 |
| Nazakat Shah Ltd | Wholesale & retail | 2025 |
| Nazari Group Ltd | Wholesale & retail | 2024 |
| NB Domestic Cleaning Limited | Administrative & support | 2021 |
| NBA Group | Professional & scientific | 1999 |
| NBK Engineering Ltd | Professional & scientific | 2023 |
| Nbrick Limited | Real estate | 2024 |
| NC Motorz Ltd | Wholesale & retail | 2013 |
| NC2CONSULTANCY Limited | Information & communication | 2025 |
| Ncompass Training Limited | Information & communication | 2013 |
| NCP Electrical Controls Limited | Construction | 2003 |
| ND Wealth Management Ltd | Financial services | 2025 |
| NDB Transport Limited | Transport & logistics | 2016 |
| NDH Retail Biddulph Ltd | Wholesale & retail | 2025 |
| NDI Trading Limited | Wholesale & retail | 2023 |
| NDK Transport Ltd | Transport & logistics | 2017 |
| NDL Plastering & Rendering Ltd | Construction | 2026 |
| Ndovu Properties UK 2 Ltd | Real estate | 2023 |
| NE Solutions Holdings (UK) Limited | Financial services | 2019 |
| Neacsu Removals Limited | Transport & logistics | 2024 |
| Neamu Transport Limited | Agriculture & fishing | 2015 |
| Neat Right Joinery Limited | Real estate | 2005 |
| Neatawash Limited | Other services | 1999 |
| Nebra Ltd | Manufacturing | 2008 |
| Necessities Limited | Extraterritorial | 2004 |
| Neckvana Ltd | Wholesale & retail | 2025 |
| Nedlink Ltd | Health & social care | 2015 |
| Need a Hand Movers Ltd | Transport & logistics | 2024 |
| NEED4SCREED Ltd. | Construction | 2018 |
| Neelam Valley Kebab House Ltd | Hospitality | 2023 |
| Neelamz Ltd | Hospitality | 2025 |
| Nefertiti Pizza & Kebab House Ltd | Hospitality | 2022 |
| Neha Authentic Ltd | Hospitality | 2026 |
| Neida Group Limited | Financial services | 2024 |
| Nellys Nest Local CIC | Other services | 2024 |