| New Horizons Homecare Services Limited | Health & social care | 2017 |
| New Leaf Counselling & Psychotherapy Ltd | Health & social care | 2021 |
| New Mind Tattoo Ltd | Other services | 2023 |
| New Model Agency Limited | Professional & scientific | 2013 |
| New Model Business Academy Limited | Education | 2008 |
| New North Business Centre Limited | Administrative & support | 2022 |
| New Phaze Heating Limited | Construction | 2014 |
| New Road Fisheries Ltd | Hospitality | 2024 |
| New Smithy Drive Residents Association Limited | Households | 2005 |
| New Spicy Cottage Ltd | Hospitality | 2025 |
| New Tongyi Limited | Wholesale & retail | 2022 |
| New Top Chef NTC Ltd | Hospitality | 2026 |
| New Trend Barbers Limited | Other services | 2018 |
| New Vision Locum Ltd | Health & social care | 2024 |
| NEW2ME Cars Ltd | Wholesale & retail | 2019 |
| Newbooth Properties Limited | Real estate | 2019 |
| Newbrid Ltd | Agriculture & fishing | 2019 |
| Newcare Finance Limited | Construction | 2003 |
| Newco Nannies Limited | Administrative & support | 2023 |
| Newdez Limited | Information & communication | 2020 |
| Newgen Health Limited | Wholesale & retail | 2026 |
| Newham Worthington Ltd | Administrative & support | 2024 |
| Newhart Limited | Information & communication | 2025 |
| Newlands Business Consultants Limited | Financial services | 2022 |
| Newline Roofing Ltd | Construction | 2023 |
| Newmill Knitting Company Limited | Administrative & support | 1979 |
| Newmill Properties (Huddersfield) Limited | Construction | 1986 |
| Newsolution Property Ltd | Real estate | 2022 |
| Newsome 786 Ltd | Health & social care | 2021 |
| Newsome Community Forum Limited | Health & social care | 2014 |
| Newsome DIY Ltd | Wholesale & retail | 2025 |
| Newsome Green Grocer Limited | Wholesale & retail | 2026 |
| Newsome Health Matters Limited | Health & social care | 2014 |
| Newsome Medical Limited | Real estate | 2024 |
| Newsome Practice Ltd | Health & social care | 2010 |
| Newsome South Developments Limited | Real estate | 1991 |
| Newsome Store Limited | Wholesale & retail | 2023 |
| Newsome Surgery Limited | Health & social care | 2022 |
| Newsrack Ltd | Transport & logistics | 2002 |
| Newstrack Newsagents Ltd | Wholesale & retail | 2004 |
| Newton Assessors Limited | Professional & scientific | 2019 |
| Newtown Construction Management Limited | Construction | 2021 |
| Newvine Village Ltd | Education | 2013 |
| Nexa Shop Ltd | Wholesale & retail | 2025 |
| Nexfit Ltd | Wholesale & retail | 2022 |
| Nexssia Limited | Professional & scientific | 2026 |
| Next Generation Foot Health Training Ltd | Education | 2020 |
| Next Generation Supplies Ltd | Wholesale & retail | 2022 |
| Next Heritage Ltd | Wholesale & retail | 2025 |
| Next Level Groundworks Limited | Construction | 2018 |
| Next Step Forward Limited | Education | 2026 |
| Next Step House Limited | Hospitality | 2025 |
| Next Truck Ltd | Wholesale & retail | 2014 |
| Nextgen Data Limited | Information & communication | 2015 |
| Nextgen Industrial Doors Limited | Construction | 2023 |
| Nexthorizon Aviation Ltd | Education | 2025 |
| Nexus Tech International Ltd | Information & communication | 2024 |
| Ngac Limited | Information & communication | 2024 |
| Ngami Properties Ltd | Real estate | 2024 |
| NGC Business Finance Limited | Financial services | 2022 |
| Ngnf Ltd | Administrative & support | 2020 |
| NGT Projects Ltd | Construction | 2013 |
| NH Capital Investments Limited | Real estate | 2025 |
| NH Critical Ltd | Arts & recreation | 2020 |
| NH Healthcare Services Ltd | Health & social care | 2020 |
| Nhgi Ltd | Financial services | 2020 |
| NI Yorkshire Ltd | Transport & logistics | 2023 |
| NIA Community Collective CIC | Professional & scientific | 2020 |
| Niblett Group Limited | Administrative & support | 2021 |
| NIC Jones Ltd | Information & communication | 2022 |
| Niceday Consultancy Limited | Administrative & support | 2008 |
| Nicedeals Limited | Wholesale & retail | 2025 |
| Nick Ryden Motor Engineers Limited | Wholesale & retail | 2006 |
| Nickylicious Ltd | Hospitality | 2021 |
| Nickylicious Studio Ltd | Manufacturing | 2026 |
| Nicmafvalve Ltd | Professional & scientific | 2025 |
| Nicola Glennon Beauty Therapy Limited | Other services | 2021 |
| Nicrob Ltd | Administrative & support | 2018 |
| Nictrition Ltd | Health & social care | 2024 |
| Nida Limited | Health & social care | 2006 |
| Nidal Legal Consultants Ltd | Professional & scientific | 2023 |
| Nidderdale Nursery Ltd | Education | 2024 |
| Nigel Greenwood Consulting Ltd | Professional & scientific | 2021 |
| Nigel Leon Consultancy Ltd | Professional & scientific | 2023 |
| Nihann Ltd | Extraterritorial | 2017 |
| Niioma Ltd | Information & communication | 2025 |
| Niisa Global Limited | Wholesale & retail | 2023 |
| Niklaus Limited | Wholesale & retail | 2025 |
| Nima BED Ltd | Administrative & support | 2018 |
| Nina Torina Ltd | Health & social care | 2009 |
| Nina Torina Online Ltd | Professional & scientific | 2015 |
| Nine Hole Oasis Ltd | Wholesale & retail | 2019 |
| Ninth House Limited | Hospitality | 2014 |
| NIP Gloss Ltd | Wholesale & retail | 2025 |
| Nirvanah Limited | Health & social care | 2022 |
| Nisadent Ltd | Health & social care | 2015 |
| Nivi Global Impex Limited | Wholesale & retail | 2026 |
| Nivi GP Locums Limited | Health & social care | 2014 |
| Nixonville Properties Ltd | Real estate | 2025 |
| NJ4LA Ltd | Transport & logistics | 2024 |