| Newton Riverside Builders Limited | Construction | 2023 |
| Nexaria Ltd | Information & communication | 2025 |
| Nexgen Homes (SW) Ltd | Real estate | 2026 |
| Nexith Technologies Ltd | Information & communication | 2026 |
| Nexity Group Ltd | Administrative & support | 2025 |
| Nexo Mechanics Ltd | Information & communication | 2023 |
| Nexpay Merchant Services Limited | Other services | 2012 |
| Next GEN Narratives CIC | Information & communication | 2025 |
| Next Generation Housing Ltd | Real estate | 2020 |
| Next Generation Staffing Limited | Administrative & support | 2005 |
| Next Level Carpentry Ltd | Manufacturing | 2021 |
| Nexura Enterprise Limited | Wholesale & retail | 2026 |
| Nexus Couriers Ltd | Transport & logistics | 2024 |
| Nexus Group PVT Ltd | Real estate | 2024 |
| Nexus Scaffolding Limited | Construction | 2018 |
| Nexus UAS Ltd | Professional & scientific | 2024 |
| NGAURUHOE8 Limited | Health & social care | 2016 |
| NGW Management Ltd | Real estate | 2025 |
| NH Capital Advisory Ltd | Real estate | 2026 |
| Niche Air Ltd | Transport & logistics | 2020 |
| Niche Store Ltd | Wholesale & retail | 2004 |
| Nicholson (SW) Ltd | Wholesale & retail | 2018 |
| Nick Horrocks Golf Limited | Wholesale & retail | 2013 |
| Nick Jevons Designs Ltd | Arts & recreation | 2018 |
| Nickchris Properties Limited | Real estate | 2019 |
| Nickel Freehold Management Limited | Households | 2017 |
| Nigerian Community in Plymouth CIC | Education | 2025 |
| Nigerian Foods Ltd | Administrative & support | 2012 |
| Nigerians in Plymouth Enterprises Network CIC | Professional & scientific | 2025 |
| Nightingale Europe Limited | Wholesale & retail | 2017 |
| Nightingale Quality Consulting Ltd | Information & communication | 2023 |
| Nikomus Games Ltd | Information & communication | 2017 |
| Nile Court Amenity Limited | Households | 2013 |
| Nimar Services Ltd | Construction | 2022 |
| Nina Rosie Health Care Ltd | Health & social care | 2016 |
| Nine Hillsborough Management Limited | Households | 2003 |
| Nineteen Gascoyne Place Limited | Real estate | 1985 |
| Nippy Chippy South West Ltd | Hospitality | 2024 |
| Nissi Property Services Ltd | Professional & scientific | 2024 |
| Nixplay Design Limited | Administrative & support | 2021 |
| Nixplay UK Limited | Manufacturing | 2021 |
| NJ Prentice Consultancy Limited | Professional & scientific | 2019 |
| NJB Global Ltd | Wholesale & retail | 2025 |
| Njenga Njeri Services Limited | Health & social care | 2026 |
| NJO Sails Limited | Manufacturing | 2016 |
| Njtrading Limited | Hospitality | 2017 |
| NJW Domestic Services Ltd | Construction | 2025 |
| NL & IO Properties Limited | Real estate | 2025 |
| NLV Developments Ltd | Real estate | 2022 |
| NM Archer Ltd | Transport & logistics | 2017 |
| NM Protection Ltd | Administrative & support | 2025 |
| NM Yachting Ltd | Professional & scientific | 2013 |
| NMA Operations Limited | Arts & recreation | 1994 |
| NMH Enterprise Ltd | Wholesale & retail | 2024 |
| NMH Wealth Ltd | Financial services | 2020 |
| NO 42 Connaught Avenue Management Company Limited | Households | 1989 |
| NO 9 Hill Park Crescent Management Co. Limited | Real estate | 1989 |
| NO Hassle Travel Ltd | Transport & logistics | 2025 |
| NO Pressure Events Ltd | Arts & recreation | 2013 |
| NO Skool CIC | Education | 2025 |
| NO Time 2 Waste Ltd | Water & waste | 2025 |
| NO. 6 Woodside Management Ltd | Households | 2014 |
| NO.122 Ltd | Real estate | 2020 |
| NO.23 Hair Aesthetic Beauty Products Ltd | Wholesale & retail | 2025 |
| NO.3 Nails Beauty Training Ltd | Other services | 2025 |
| Noakes Habermehl & Kerr Limited | Wholesale & retail | 2014 |
| Noble Accounting Limited | Professional & scientific | 2023 |
| Nodlang Limited | Wholesale & retail | 2024 |
| Nohma Ltd | Wholesale & retail | 2021 |
| Nokutenda Limited | Health & social care | 2014 |
| Nolar Automotive Limited | Wholesale & retail | 2026 |
| Nomac Interior Finishes Ltd | Construction | 2020 |
| Nominull Ltd | Information & communication | 2023 |
| NON Stop Services Group Ltd | Administrative & support | 2022 |
| Nonsensical Limited | Hospitality | 2024 |
| Noodle & Snoot Limited | Construction | 2026 |
| Nook Houseplants Ltd | Wholesale & retail | 2021 |
| Noor Hari Spice Ltd | Hospitality | 2025 |
| Noordhaven Limited | Financial services | 2024 |
| Nora's Restaurant Ltd | Hospitality | 2024 |
| Norand Ltd | Real estate | 2020 |
| Nordic Holdings (SW) Ltd | Professional & scientific | 2010 |
| Nordic Installations Ltd | Manufacturing | 2007 |
| Nordstrom International Limited | Information & communication | 2012 |
| Normandy Parc Residents Company Limited | Households | 2016 |
| North Building Contractors Limited | Construction | 2014 |
| North Cornwall Fasteners Ltd | Wholesale & retail | 2024 |
| North Devon Fasteners Ltd | Wholesale & retail | 2024 |
| North Hill House Limited | Hospitality | 2024 |
| North Hill PLY PUB Ltd | Hospitality | 2025 |
| North Hill Software Limited | Wholesale & retail | 2013 |
| North Hill SW Ltd Limited | Hospitality | 2025 |
| North Infrastructure Ltd | Manufacturing | 2019 |
| North of New Ltd | Wholesale & retail | 2025 |
| North Western Leisure Ltd | Financial services | 2023 |
| NORTHEAST44 Ltd | Households | 2018 |
| Northey Services Limited | Administrative & support | 2026 |
| Northmore Business Associates Limited | Professional & scientific | 2011 |
| Northshore Commerce Ltd | Wholesale & retail | 2026 |
| Northsong Compass Ltd | Manufacturing | 2026 |