| Ne-U Life Ltd | Wholesale & retail | 2021 |
| Neal Bryant Ltd | Professional & scientific | 2018 |
| Neal Carter Limited | Professional & scientific | 2010 |
| Nealls's Wheels Tyres Ltd | Wholesale & retail | 2024 |
| Nearart Homes Investments Limited | Construction | 1995 |
| Neatsmith Finance Ltd | Administrative & support | 2013 |
| Neatsmith Holdings Ltd | Financial services | 2017 |
| Neatsmith Ltd | Manufacturing | 2013 |
| Neatsmith South London LLP | | 2010 |
| Nebere CIC | Information & communication | 2024 |
| Nebs Investments LLP | | 2023 |
| Nebs Property Services Ltd | Construction | 2019 |
| Neca Giant Limited | Wholesale & retail | 2025 |
| Nedaxelar Limited | Financial services | 2004 |
| Neela Bettridge Ltd | Other services | 2011 |
| Neelum Services Limited | Health & social care | 2022 |
| Neet Investment Properties Ltd | Real estate | 2019 |
| Neev Home Limited | Real estate | 2020 |
| Nehemi Ltd | Health & social care | 2013 |
| Nehoriya Ltd | Real estate | 2025 |
| Neil D Enterprises Limited | Financial services | 2016 |
| Neil Eckersley Productions Ltd | Arts & recreation | 2015 |
| Neil Kitchen Limited | Health & social care | 2010 |
| Neil Medical Services Limited | Information & communication | 2019 |
| Neiss Care + Ltd | Administrative & support | 2015 |
| Nekoda Mint Limited | Professional & scientific | 2023 |
| Neku Ltd | Education | 2013 |
| Nelsands Limited | Public administration | 2023 |
| Nemvest Limited | Real estate | 2016 |
| Nenis Trades Limited | Wholesale & retail | 2025 |
| NEO Capital Consulting Limited | Professional & scientific | 2016 |
| NEO Home Interiors & Floor Concepts Ltd | Construction | 2023 |
| NEO Nest Ltd | Wholesale & retail | 2025 |
| NEO Property Holdings UK Limited | Real estate | 2026 |
| Neogene Holdings Limited | Professional & scientific | 2015 |
| Neogene Limited | Manufacturing | 2015 |
| Neon Rail Ltd | Construction | 2024 |
| Neosense Limited | Wholesale & retail | 2023 |
| Neovate Limited | Information & communication | 2019 |
| Nepal Holidays Limited | Administrative & support | 2021 |
| Nepra Limited | Wholesale & retail | 2026 |
| Nerdvana Limited | Transport & logistics | 1999 |
| Nere Properties Ltd | Real estate | 2024 |
| Nere Services Ltd | Professional & scientific | 2019 |
| Nest and Play Ltd | Wholesale & retail | 2026 |
| Nestcart Ltd | Wholesale & retail | 2025 |
| Nestforall Property Services Ltd | Real estate | 2025 |
| Nesti Estates Ltd | Real estate | 2025 |
| Nestled North Ltd | Real estate | 2024 |
| NET Class Windows Ltd | Households | 2020 |
| NET Zero People Limited | Administrative & support | 2023 |
| NET Zero Search Global Ltd | Administrative & support | 2025 |
| Netcom Distributors Limited | Information & communication | 1997 |
| Netera Ltd | Information & communication | 2023 |
| Netstat Limited | Information & communication | 2007 |
| Netsuccess Limited | Information & communication | 2016 |
| Netvisual Ltd | Information & communication | 2022 |
| Network & Security Limited | Information & communication | 2012 |
| Network 41 Management Limited | Households | 2016 |
| Network of Executive Women in Hospitality UK Limited | Other services | 2006 |
| Neuralsense Limited | Information & communication | 2024 |
| Neurolink Occupational Therapy Ltd | Health & social care | 2015 |
| Neurolink Physiotherapy Ltd | Health & social care | 2006 |
| Neurolink Psychology Expert Witness Services Limited | Health & social care | 2023 |
| Neurolink Psychology Limited | Health & social care | 2007 |
| Neurolistics Ltd | Health & social care | 2020 |
| Neuronurtura Ltd | Education | 2025 |
| Neuropsychology Services Limited | Health & social care | 2012 |
| Neurorelate Ltd | Information & communication | 2025 |
| Neuroworks Consulting Ltd | Health & social care | 2015 |
| Never Alone Ltd | Professional & scientific | 2025 |
| Nevish Capital Limited | Professional & scientific | 2019 |
| Nevrast Consulting Ltd | Professional & scientific | 2024 |
| New ACH Limited | Professional & scientific | 2013 |
| New Agenda (London) Limited | Construction | 2004 |
| New Beginnings South Ltd | Health & social care | 2014 |
| New Cavendish Trustees Limited | Real estate | 1992 |
| New Century F M Limited | Financial services | 2016 |
| New Century Landscaping Ltd. | Administrative & support | 2006 |
| New Entity Limited | Administrative & support | 2024 |
| New Entity Pictures Ltd | Information & communication | 2023 |
| New GEN Auto's UK Ltd | Extraterritorial | 2023 |
| New Happy Palace Watford Ltd | Hospitality | 2026 |
| New Holidays London Limited | Other services | 2010 |
| New Home Pizza Limited | Hospitality | 2018 |
| New Hope Retail Ltd | Wholesale & retail | 2011 |
| New Impetus International Limited | Professional & scientific | 2017 |
| New Interface Limited | Information & communication | 2016 |
| New Linden Hotel Limited | Hospitality | 2000 |
| New Link Ltd | Professional & scientific | 2023 |
| New Logistics Ltd | Professional & scientific | 2000 |
| New Moon Future Solutions Ltd | Information & communication | 2009 |
| New Shapla Watford Ltd | Hospitality | 2015 |
| New Shepherd Care Limited | Administrative & support | 2018 |
| New Systems for Production Ltd | Information & communication | 2024 |
| New UK Marketing Ltd | Other services | 2012 |
| New Way Vegan Ltd | Wholesale & retail | 2020 |
| Newacore Global Ltd | Information & communication | 2025 |
| Newacore Ltd | Information & communication | 2022 |
| Newacore Software Ltd | Information & communication | 2025 |