| Neuropsychology Diagnostics Limited | Administrative & support | 2016 |
| Nevad Ltd | Information & communication | 2021 |
| Never BE Limited | Administrative & support | 2007 |
| Never Forget Another Renewal Date Ltd | Financial services | 2024 |
| Never Over Theatre Limited | Arts & recreation | 2025 |
| Nevertoolate Fitness Ltd | Information & communication | 2020 |
| New 4 YOU Limited | Wholesale & retail | 2024 |
| New AGE Property Solutions Limited | Real estate | 2023 |
| New Barns Stores Ltd | Real estate | 2021 |
| New Belgravia Limited | Hospitality | 2022 |
| New Bridge Cultural Exchange Ltd | Education | 2018 |
| New Build and Refurbishment Contractor Ltd | Construction | 2022 |
| New Build and Renewables Holdings South West Limited | Construction | 2023 |
| New Build Furniture Consultancy Limited | Wholesale & retail | 2024 |
| New Car? Ltd | Wholesale & retail | 2016 |
| New Chapter Pilates Ltd | Arts & recreation | 2026 |
| New City Traders Limited | Other services | 2023 |
| New Connections Limited | Professional & scientific | 2024 |
| New Cross Service Management Ltd | Real estate | 2025 |
| New Cunningham Automotive Ltd | Manufacturing | 2020 |
| New Dawn Childcare Services Community Interest Company | Health & social care | 2022 |
| New Dawn Publishers Limited | Information & communication | 2024 |
| New Dawn Tech Ltd | Wholesale & retail | 2018 |
| New Dimension 114 Limited | Professional & scientific | 2018 |
| New Dimension Limited | Information & communication | 1998 |
| New Dream UK Ltd | Real estate | 2025 |
| New Dynamic Limited | Administrative & support | 2013 |
| New Education System Limited | Information & communication | 2022 |
| New Electrical Ltd | Construction | 2020 |
| New England Hotel Ltd. | Hospitality | 1997 |
| New Fcsb Services Ltd | Construction | 2016 |
| New Forest Fritham Limited | Health & social care | 2024 |
| New Gana Restaurant Ltd | Hospitality | 2018 |
| New Generation Football Club Ltd | Arts & recreation | 2018 |
| New Green Solutions Limited | Real estate | 2012 |
| New Harrow OFF License Ltd | Wholesale & retail | 2021 |
| New Harrow Weald Sushi Ltd | Wholesale & retail | 2023 |
| New Health Supplies Limited | Wholesale & retail | 2010 |
| New Horizons Education and Culture Ltd | Education | 2019 |
| New House Properties Limited | Real estate | 2023 |
| New Image Communications Limited | Information & communication | 2006 |
| New Kilimanjaro UK Limited | Administrative & support | 2005 |
| New Left Review Limited | Information & communication | 1960 |
| New Left Trust | Professional & scientific | 1992 |
| New Life Suwarta Sangat | Education | 2009 |
| New Light Developments 2 Ltd | Real estate | 2021 |
| New Light Developments Ltd | Real estate | 2018 |
| New Little Heaven Ltd | Education | 2025 |
| New Lives Therapy Services Ltd | Education | 2026 |
| New London News Ltd | Wholesale & retail | 2013 |
| New Look Impressions Ltd | Other services | 2007 |
| New Mile Limited | Extraterritorial | 2008 |
| New Moon Properties Limited | Real estate | 2023 |
| New Newbury Sushi Limited | Hospitality | 2019 |
| New ORA Limited | Wholesale & retail | 2002 |
| New Orchard UK Ltd | Real estate | 2020 |
| New Park Enterprises Limited | Wholesale & retail | 2012 |
| New Peri Peri Chicken Ltd | Hospitality | 2019 |
| New Possible Limited | Professional & scientific | 2021 |
| New Residential Ltd | Real estate | 2022 |
| New Road Venture Limited | Administrative & support | 2023 |
| New Roofing Systems Ltd | Construction | 2024 |
| New Smart Way Real Estate Brokers Ltd | Real estate | 2021 |
| New South Harrow Food and Wine Ltd | Wholesale & retail | 2018 |
| New Start New Beginnings Limited | Other services | 2020 |
| New Success China (UK Division) Ltd | Real estate | 2022 |
| New Tours Live Limited | Information & communication | 2021 |
| New Vista Limited | Construction | 2013 |
| New Voyages Limited | Professional & scientific | 2024 |
| New Wembley Sushi Ltd | Hospitality | 2024 |
| New-Turn Driving School Ltd | Education | 2017 |
| Newage Builders Ltd | Construction | 2022 |
| Newari Ltd | Administrative & support | 2017 |
| Neways Management Limited | Real estate | 1986 |
| Newbarnes Limited | Real estate | 2018 |
| Newblock Properties Limited | Construction | 2013 |
| Newcastle Academic Press Limited | Information & communication | 2014 |
| Newgen Properties Limited | Real estate | 2024 |
| Newhall Farm Estate Limited | Agriculture & fishing | 2016 |
| Newhouse Retail Ltd | Wholesale & retail | 2024 |
| Newing & Lacey Limited | Construction | 2014 |
| Newlands Development Ltd | Construction | 2017 |
| Newlands One Development Ltd | Real estate | 2023 |
| Newlands Two Development Ltd | Real estate | 2025 |
| Newlink Logistics Ltd | Transport & logistics | 2025 |
| Newman & Partners Insolvency & Recovery Services Limited | Financial services | 2004 |
| Newman DE Vere Limited | Administrative & support | 1985 |
| Newmatch Limited | Real estate | 2019 |
| Newmile Associates Limited | Administrative & support | 2015 |
| Newmir Limited | Professional & scientific | 1986 |
| Newmoon Ingredients Ltd | Wholesale & retail | 2026 |
| Newport Capital Management Limited | Professional & scientific | 2009 |
| News Technology Limited | Professional & scientific | 1998 |
| Newsasset Limited | Information & communication | 2012 |
| Newstone Estates Limited | Administrative & support | 2019 |
| Newtel Properties Limited | Real estate | 2025 |
| Newton Finance Ltd | Financial services | 2004 |
| Newton Information Technology Limited | Information & communication | 2006 |
| Newton IT Group Limited | Professional & scientific | 2007 |
| Newton IT Holdings Limited | Information & communication | 1997 |