| My Tour Compass UK Ltd | Administrative & support | 2023 |
| My UK Guide Limited | Hospitality | 2025 |
| Myall Family Holdings Ltd | Financial services | 2024 |
| Mycar Repairs Devon Limited | Wholesale & retail | 2023 |
| Mycargoes Limited | Information & communication | 2021 |
| Mycontend Ltd | Information & communication | 2026 |
| MYE Park Ltd | Administrative & support | 2018 |
| Myles Taylor Medical Services Ltd | Health & social care | 2014 |
| Mynatureguide Ltd | Information & communication | 2026 |
| Myrtoan Limited | Wholesale & retail | 2024 |
| Mysunrise Ltd | Information & communication | 2023 |
| Myth Machine Ltd | Information & communication | 2024 |
| Mythic Group Limited | Extraterritorial | 2020 |
| Mythic Studios Limited | Information & communication | 2020 |
| N & M Investment Properties Ltd | Wholesale & retail | 2024 |
| N & S Properties (UK) Ltd | Construction | 2003 |
| N and N Stays Ltd | Real estate | 2024 |
| N Best Profits Limited | Hospitality | 2015 |
| N C Kirby Properties Ltd | Real estate | 2021 |
| N Crocker Building Services Ltd | Construction | 2009 |
| N J Warren Limited | Construction | 2000 |
| N M Accountancy Limited | Professional & scientific | 2015 |
| N Modern Style Limited | Hospitality | 2016 |
| N P Cutland Ltd | Construction | 2010 |
| N Plant Investment Management Ltd | Real estate | 2023 |
| N W Carpenters Ltd | Construction | 2024 |
| N&B Foods Exeter Limited | Wholesale & retail | 2015 |
| N&P (SW) Services Ltd | Transport & logistics | 2020 |
| N.A. Guppy (Holdings) Limited | Financial services | 2013 |
| N.A. Guppy Group Holdings Limited | Financial services | 2018 |
| N.A. Guppy Limited | Construction | 1965 |
| N10 (SW) Ltd | Hospitality | 2026 |
| Na-Consultancy Ltd. | Education | 2014 |
| Nabizadeh Drainage Ltd | Water & waste | 2025 |
| Nacho Heaven Limited | Hospitality | 2021 |
| Nadder Ridge Farm Ltd | Agriculture & fishing | 2021 |
| Nads Baps Ltd | Hospitality | 2022 |
| Naganddog Limited | Manufacturing | 2012 |
| Nails 4 U Exeter Ltd | Other services | 2016 |
| Nalana Ltd | Transport & logistics | 2023 |
| Nandina Limited | Professional & scientific | 2019 |
| Nansledan North Management Company Limited | Households | 2017 |
| Nansledan Soth Management Company Limited | Households | 2014 |
| Nanwood Plumbing & Heating Ltd | Construction | 2016 |
| Nanxi River Ltd | Hospitality | 2020 |
| Naomi Francesca Ltd | Wholesale & retail | 2026 |
| Naomi J Ryan Limited | Real estate | 2008 |
| NAP Tools Limited | Manufacturing | 2015 |
| Naplex Digital Communications Limited | Wholesale & retail | 2019 |
| Napoleon Inn BOS Limited | Hospitality | 2023 |
| Nas-Tyres Rubber Solutions Ltd | Wholesale & retail | 2024 |
| Nashco Systems Limited | Construction | 2011 |
| Nasratullah Yousufzai Ltd | Wholesale & retail | 2023 |
| Nasrnoor Limited | Health & social care | 2019 |
| Nata Projects Limited | Professional & scientific | 2014 |
| Natasha Makes Ltd | Manufacturing | 2019 |
| Natasha Mccarty Designs Ltd | Wholesale & retail | 2024 |
| Natatomisam Limited | Real estate | 2009 |
| National Compliance Solutions Limited | Professional & scientific | 2019 |
| National Family Mediation | Health & social care | 1999 |
| National Family Mediation Service Ltd | Health & social care | 2016 |
| Natpropco Ltd | Extraterritorial | 2015 |
| Nattalia Ltd | Transport & logistics | 2025 |
| Natural Resource Professionals Ltd | Administrative & support | 2015 |
| Natural Vision Homes Limited | Real estate | 2019 |
| Naturally Floors SL | Construction | 2012 |
| Naturenode.Io Ltd | Professional & scientific | 2026 |
| Nautexe Global Limited | Professional & scientific | 2025 |
| Nautexe Global Operations UK Ltd | Professional & scientific | 2023 |
| Nautexe Limited | Manufacturing | 2019 |
| Nautical Trading Ltd | Manufacturing | 2023 |
| Navi-Port Shipping Services Limited | Transport & logistics | 2026 |
| Navisurv Ltd | Transport & logistics | 2014 |
| Navugo Group Ltd | Wholesale & retail | 2019 |
| NAZ Meraas Ltd | Real estate | 2022 |
| NAZ Taxi Limited | Transport & logistics | 2025 |
| Nazim Ltd | Hospitality | 2014 |
| NC Construction South West Limited | Construction | 2021 |
| NC Online Ltd | Wholesale & retail | 2024 |
| NCC Lettings Limited | Real estate | 2022 |
| NDH Transport Limited | Transport & logistics | 2024 |
| Ndochie Limited | Transport & logistics | 2025 |
| Neal Bertram Legal Services Limited | Professional & scientific | 2012 |
| Near Zero by Design Ltd | Information & communication | 2022 |
| Nearby Couriers Ltd | Transport & logistics | 2021 |
| Neat Experts Holdings Limited | Extraterritorial | 2014 |
| Neat Fabrication Limited | Manufacturing | 2015 |
| Neatly London Limited | Wholesale & retail | 2018 |
| Nectech Limited | Other services | 2021 |
| Nedcom Property Holdings Ltd | Real estate | 2025 |
| Nedcom Windows Solutions Ltd | Construction | 2021 |
| Nehnutel Nosti Ltd | Real estate | 2017 |
| Neighbour Homes Ltd | Real estate | 2022 |
| Neighbourhood BEE Corridor Community Interest Company | Education | 2023 |
| Neighbourworks CIC | Wholesale & retail | 2012 |
| Neli Harvey Ltd | Health & social care | 2025 |
| Nellie PR Limited | Professional & scientific | 2006 |
| Nelo Rowing UK Limited | Arts & recreation | 2017 |
| Nemrut Construction Ltd | Construction | 2025 |
| NEO Consulting Limited | Professional & scientific | 2003 |