| Newlands Entertainment Agency Ltd | Arts & recreation | 2011 |
| Newlay Asphalt (Lincs) Limited | Manufacturing | 2025 |
| Nexphase Limited | Professional & scientific | 2012 |
| Next Day Plates Ltd | Wholesale & retail | 2025 |
| Next Horizons Coaching Ltd | Education | 2025 |
| Nexus Marketing Limited | Wholesale & retail | 2008 |
| Nezuban Limited | Information & communication | 2022 |
| Nezuban UK Ltd | Information & communication | 2022 |
| Nicholson Court Beverley (Management) Limited | Construction | 2007 |
| Nicholson Goldsmiths Limited | Other services | 2008 |
| Nick Robinson Lawn and Garden Care Limited | Administrative & support | 2008 |
| Nico Clubhouse Holdings Ltd | Financial services | 2022 |
| Nico Property Investments Ltd | Real estate | 2022 |
| Nieklan Services Limited | Transport & logistics | 2012 |
| NIETOS213 | Real estate | 2002 |
| Nigandra Farms Limited | Agriculture & fishing | 1981 |
| Nigel Coyle & Co Ltd | Professional & scientific | 2010 |
| Nigel Orman Limited | Administrative & support | 2012 |
| Nigel Rice Transport and Storage Limited | Transport & logistics | 2013 |
| Nite Direct Marketing Limited | Manufacturing | 2012 |
| NJM Property Ltd | Real estate | 2013 |
| NK Associates (Hull) Limited | Hospitality | 2018 |
| NL Studio Ltd | Professional & scientific | 2026 |
| NMV Engineering & Projects Ltd | Administrative & support | 2007 |
| Noabella Ltd | Wholesale & retail | 2019 |
| Noble Investors Ltd | Real estate | 2020 |
| Noblemans of Beverley Limited | Other services | 2018 |
| Noddfa Care and Consultancy Ltd | Health & social care | 2025 |
| Noisproperties Ltd | Real estate | 2024 |
| Noor Medical Services Limited | Health & social care | 2004 |
| Norman Jarvis & SON Limited | Manufacturing | 2013 |
| Normans Country Homes Yorkshire Ltd | Construction | 2024 |
| North Bar Engineer Ltd | Construction | 2017 |
| North Bar Refrigeration Ltd | Construction | 2022 |
| North Bar Wealth Limited | Professional & scientific | 2018 |
| North END Farm Limited | Agriculture & fishing | 2002 |
| North END Wigwams Ltd | Hospitality | 2022 |
| North Hull Sports Network CIC | Education | 2021 |
| North Marine Limited | Manufacturing | 1998 |
| North Path Recruitment Ltd | Administrative & support | 2026 |
| North Wold Inns Limited | Hospitality | 1975 |
| Northbar Finance Limited | Other services | 2025 |
| Northern Granite Specialists Ltd | Construction | 2007 |
| Northern Star Flooring Limited | Construction | 2009 |
| Norwood Interiors Limited | Construction | 2020 |
| Norwood Offices (Beverley) Ltd | Real estate | 2019 |
| Norwood Padel Ltd | Wholesale & retail | 2025 |
| Norwood Promotions Ltd | Professional & scientific | 2013 |
| Nourish Body Studios Ltd | Arts & recreation | 2025 |
| Novo Web Ltd | Information & communication | 2023 |
| NP Travel Limited | Transport & logistics | 2021 |
| NPN Medical Services Limited | Health & social care | 2024 |
| Npns Limited | Real estate | 2018 |
| NRB Ltd | Wholesale & retail | 2020 |
| NS Social Work Ltd | Health & social care | 2022 |
| NSC Builders Limited | Construction | 2003 |
| Ntwk Media Ltd | Professional & scientific | 2020 |
| Nuove Avventure Ltd | Hospitality | 2013 |
| Nuussisut Shipping Limited | Administrative & support | 2020 |
| O5 Farming Limited | Agriculture & fishing | 2026 |
| Oakland Property & Land Limited | Hospitality | 2008 |
| Oaklm Ltd | Financial services | 2021 |
| Oaks of Beverley Limited | Wholesale & retail | 2019 |
| Obstetrics, Gynaecology & Psychiatry Consultation Limited | Health & social care | 2016 |
| OCD Performance Ltd | Manufacturing | 2026 |
| Ockelton Electrical Contractors Ltd | Construction | 2021 |
| Ockelton Investments Limited | Real estate | 2026 |
| OCS Mortgage Services Ltd | Financial services | 2023 |
| Octavian Holdings Limited | Financial services | 2023 |
| Octopus Leadership Ltd | Professional & scientific | 2020 |
| ODD Socks for Everyone Limited | Transport & logistics | 2022 |
| OG Civils Ltd | Construction | 2022 |
| Ogino Ltd | Hospitality | 2011 |
| Ogive Intellectual Property Limited | Other services | 2008 |
| OH My COD (2020) Limited | Hospitality | 2020 |
| OH My Dog (East Yorkshire) Ltd | Wholesale & retail | 2020 |
| OH My Dog Beverley Ltd | Wholesale & retail | 2026 |
| Oiljar Ltd | Professional & scientific | 2022 |
| Old Hymerians Association (Holdings) Limited (the) | Professional & scientific | 1949 |
| Old Town Convenience Ltd | Wholesale & retail | 2023 |
| Old Town Optometrists Ltd | Wholesale & retail | 2013 |
| Oldroyds Corner Ltd | Administrative & support | 2016 |
| Oligra Limited | Professional & scientific | 2015 |
| Oliver Hudson Surveying Ltd | Professional & scientific | 2024 |
| Ombler Laboratories Limited | Manufacturing | 2015 |
| Omega Facilities Limited | Administrative & support | 2016 |
| Omni Cubed Europe Ltd | Wholesale & retail | 2016 |
| Omnia Coria (Beverley) Ltd | Wholesale & retail | 2025 |
| Onceup-On-Time PVT Ltd | Wholesale & retail | 2025 |
| One 2 One Environmental Limited | Construction | 2019 |
| Oneworld Travel Group Limited | Administrative & support | 2004 |
| Onteck Limited | Information & communication | 2009 |
| Oomwoc Ltd | Real estate | 2024 |
| Open Tech (East Yorkshire) Limited | Information & communication | 2020 |
| Operation K9 Academy Ltd | Education | 2024 |
| Optimal Wind Ltd | Administrative & support | 2018 |
| Oracle Plumbing and Heating Supplies Limited | Wholesale & retail | 2015 |
| Oracle Taps Limited | Wholesale & retail | 2014 |
| Orchard Professional Solutions Ltd | Administrative & support | 2012 |
| Orion Assets Ltd | Real estate | 2015 |