| Newcastle Drive Management Company Limited | Real estate | 2018 |
| Newcastle Fairmount Limited | Real estate | 1986 |
| Newcastle Heights Management Company Limited | Real estate | 1984 |
| Newcombe's Care Services Limited | Health & social care | 2021 |
| Newfie Properties Ltd | Construction | 2025 |
| Newfields Bess Ltd | Construction | 2022 |
| Newgate Consultancy Ltd | Information & communication | 2020 |
| Newgate Lodge (EMI) Limited | Health & social care | 2000 |
| Newhaven Consulting Ltd | Professional & scientific | 2020 |
| Newkbyte Ltd | Information & communication | 2025 |
| Newland Dawn Ltd | Real estate | 2025 |
| Newlink Ventures Ltd | Wholesale & retail | 2020 |
| Newlook Ceilings Limited | Construction | 2003 |
| Newlynn Eco Living Limited | Real estate | 2024 |
| Newlynn Holdings Ltd | Financial services | 2022 |
| Newlynn Homes (East Bridgeford) Limited | Construction | 2021 |
| Newlynn Homes (Kirton Lindsey) Ltd | Construction | 2022 |
| Newlynn Homes (Rutland) Ltd | Real estate | 2019 |
| Newlynn Homes(Barnstone) Limited | Construction | 2021 |
| Newlynn Plant Services Limited | Administrative & support | 2016 |
| Newmatdev Ltd | Professional & scientific | 2025 |
| Neworks Consulting Ltd | Information & communication | 2024 |
| Newplas Roofing Systems Limited | Construction | 2021 |
| Newpoint Stores Limited | Wholesale & retail | 2017 |
| Newport Langley Ltd | Wholesale & retail | 2019 |
| Newport Property Services Ltd | Real estate | 2021 |
| Newpriory Limited | Real estate | 2002 |
| Newslife Ltd | Information & communication | 2015 |
| Newson Gale Limited | Manufacturing | 1988 |
| Newstar Bathroom Limited | Wholesale & retail | 2026 |
| Newstead Enterprise Limited | Arts & recreation | 2010 |
| Newstead Estates Ltd | Real estate | 2015 |
| Newstead Trading Limited | Construction | 2026 |
| Newstead UK Trading Limited | Construction | 2025 |
| Newtec Construction Limited | Construction | 2000 |
| Newthorpe Interiors Limited | Construction | 2025 |
| Newthorpe Sales Ltd | Construction | 2014 |
| Newton Abbot V.E. Limited | Other services | 1996 |
| Newton Architects Ltd | Professional & scientific | 2009 |
| Newton Asset Capital Ltd | Real estate | 2023 |
| Newton Cavell Limited | Real estate | 2002 |
| Newton Construction Limited | Construction | 2008 |
| Newton Group (Midlands) Ltd | Construction | 2025 |
| Newton Homes Group Ltd | Real estate | 2025 |
| Newton Langsett Engineering Consultants Ltd | Information & communication | 2022 |
| Newton Media Group Ltd | Information & communication | 2023 |
| Newton Willow Limited | Real estate | 2017 |
| Newtono Limited | Information & communication | 2015 |
| Newtoyou Studios Ltd | Wholesale & retail | 2025 |
| Newvision Security Solutions Ltd | Administrative & support | 2018 |
| Nexa AI Solutions Limited | Information & communication | 2025 |
| Nexaforge Tech Ltd | Information & communication | 2024 |
| Nexaprime Technologies Limited | Information & communication | 2025 |
| Nexbay Properties Limited | Real estate | 2013 |
| Nexerax Ltd | Information & communication | 2023 |
| Nexgen Promotions Limited | Wholesale & retail | 2025 |
| Nexgeneration Nests Ltd | Real estate | 2024 |
| Nexo Trade Hub Ltd | Information & communication | 2026 |
| Nexochain Limited | Information & communication | 2025 |
| Nexoil International Ltd | Wholesale & retail | 2023 |
| Nexor Limited | Information & communication | 2004 |
| Nexora AD Ltd | Wholesale & retail | 2026 |
| Nexora Traders Ltd | Wholesale & retail | 2025 |
| Nexoria Ltd | Real estate | 2024 |
| Nexport Trade Ltd | Other services | 2025 |
| Nexstor Limited | Information & communication | 2004 |
| Next Chapter Training Ltd | Other services | 2026 |
| Next Chapter Ventures Ltd | Financial services | 2026 |
| Next Day Online Sales Ltd | Wholesale & retail | 2023 |
| Next Door Dance CIC | Arts & recreation | 2024 |
| Next GEN Empowerment Hub CIC | Education | 2025 |
| Next Generation Estates Ltd | Real estate | 2022 |
| Next Haven Strategies Ltd | Professional & scientific | 2025 |
| Next House Ltd | Construction | 2026 |
| Next Level Catering Ltd | Hospitality | 2019 |
| Next Level Living Ltd | Real estate | 2025 |
| Next Level of Performance Ltd | Manufacturing | 2020 |
| Next Level Refurbishments Ltd | Construction | 2026 |
| Next Level Sport ED Ltd | Education | 2017 |
| Next Level Sports Ltd | Education | 2017 |
| Next Level Tailored Education Ltd | Education | 2026 |
| Next Move Estates Limited | Real estate | 2006 |
| Next Phase Coaching Limited | Other services | 2025 |
| Next Realm Ltd | Information & communication | 2021 |
| Next Regeneration Ltd | Administrative & support | 2020 |
| Next Root Solutions Limited | Information & communication | 2024 |
| Next Steps ED CIC | Education | 2024 |
| Next Steps Home Living Ltd | Health & social care | 2025 |
| Next Steps Rehabilitation CIC | Households | 2025 |
| Next Trick Ltd | Information & communication | 2018 |
| Next Verse Ltd | Information & communication | 2026 |
| Nextcartseller Ltd | Wholesale & retail | 2026 |
| Nextec Direct Limited | Wholesale & retail | 2010 |
| Nextgen Autos Ltd | Wholesale & retail | 2020 |
| Nextgen Data Solutions Ltd | Information & communication | 2025 |
| Nextgen Education Ltd | Professional & scientific | 2024 |
| Nextgen OPS Limited | Information & communication | 2025 |
| Nextgen Precast Ltd | Construction | 2025 |
| Nextgen Robotics and Innovation Limited | Wholesale & retail | 2019 |
| Nexti Media Limited | Professional & scientific | 2024 |