| Northbrook Bower Limited | Households | 2009 |
| Northbrook Court Management (Winchester) Limited | Households | 2001 |
| Northbrook Estate Limited | Real estate | 2013 |
| Northbrook Park Estate Limited | Real estate | 2021 |
| Northbrook Park LLP | | 2013 |
| Northbrook Park Residential LLP | | 2019 |
| Northerwood Freeholders (Lyndhurst) Limited | Households | 1981 |
| Northforge Studio Ltd | Information & communication | 2026 |
| Northgate Chambers Management Limited | Households | 1997 |
| Northlands Assets Solutions Ukeig | | 2013 |
| Northlands House Limited | Health & social care | 2022 |
| Northside Travel Solutions Limited | Transport & logistics | 2022 |
| Northstar Wealth Management Group Ltd | Financial services | 2014 |
| Northway Consultancy Ltd | Information & communication | 2025 |
| Northwood (Salisbury) Limited | Real estate | 2014 |
| Norwegian Cruise Line Group UK Limited | Administrative & support | 2000 |
| NOS 2-8 (Even) Almatade Road Bitterne Management Company Limited | Real estate | 2002 |
| Nosh Grill Ltd | Hospitality | 2025 |
| Nosh Services Ltd | Construction | 2024 |
| Noss on Dart Hotel Limited | Hospitality | 2024 |
| NOT for Profit Funeral Plans Ltd | Other services | 2017 |
| NOT Vegan Friendly Ltd | Health & social care | 2020 |
| Nother Limited | Information & communication | 2014 |
| Noursh Ltd | Wholesale & retail | 2024 |
| Nova Aventus Ltd | Other services | 2025 |
| Nova Bournemouth Ltd | Hospitality | 2025 |
| Nova Build Group Limited | Manufacturing | 2017 |
| Nova Candles Ltd | Wholesale & retail | 2023 |
| Nova Care Consultants Ltd | Health & social care | 2019 |
| Nova Commercial Ltd | Wholesale & retail | 2025 |
| Nova Core Investments Ltd | Financial services | 2020 |
| Nova Fast Transport Ltd | Transport & logistics | 2022 |
| Nova Forest Kitchen Limited | Hospitality | 2021 |
| Nova One Design Ltd | Professional & scientific | 2026 |
| Nova Plumbing and Heating Ltd | Construction | 2008 |
| Nova Structures Limited | Manufacturing | 2017 |
| Nova Technology Ltd | Information & communication | 2021 |
| Nova UK Group Limited | Wholesale & retail | 2019 |
| Nova-Clean Ltd | Administrative & support | 2025 |
| Novacore Technologies Ltd | Manufacturing | 2025 |
| Novae Aesthetics Ltd | Other services | 2026 |
| Novaenertech Ltd | Wholesale & retail | 2026 |
| Novalis Prime Properties Limited | Real estate | 2026 |
| Novanestsales Ltd | Wholesale & retail | 2025 |
| Novanomad Ltd | Wholesale & retail | 2025 |
| Novara Coffee House Limited | Hospitality | 2025 |
| Novascale Enterprise Ltd | Transport & logistics | 2025 |
| Novaseal Limited | Manufacturing | 2002 |
| Novaserve Limited | Administrative & support | 2025 |
| Novaspace Solutions Ltd | Information & communication | 2024 |
| Novaspree Co Ltd | Wholesale & retail | 2026 |
| Novelinx Group Ltd | Transport & logistics | 2021 |
| Noveltech Solutions Ltd | Information & communication | 2016 |
| Novirem Company Ltd | Transport & logistics | 2017 |
| Novus Crown Consultancy Ltd | Professional & scientific | 2025 |
| Novus Medical Holdings Ltd | Administrative & support | 2016 |
| Novus Medical Limited | Manufacturing | 2014 |
| Novus Online Limited | Wholesale & retail | 2021 |
| NOW Properties (Southern) Limited | Real estate | 2023 |
| Nowe Building Services Limited | Construction | 2015 |
| Noyce Holdings Limited | Financial services | 2016 |
| Noyce Insurance Solutions Limited | Financial services | 2002 |
| NP Brown Limited | Information & communication | 2021 |
| NP Creations Limited | Wholesale & retail | 2020 |
| NP Luxury Limited | Professional & scientific | 2015 |
| NPB Consulting Ltd | Professional & scientific | 2018 |
| NPT Management Systems Ltd | Professional & scientific | 2021 |
| NPT Property Management Ltd | Real estate | 2024 |
| Nquiringminds Limited | Information & communication | 2010 |
| Nraka Ltd | Real estate | 2026 |
| NRG Mailbox Holdings Limited | Transport & logistics | 2024 |
| NRG Recruitment Group Ltd | Professional & scientific | 2025 |
| NRG Resourcing Ltd | Administrative & support | 2017 |
| NRG Security Limited | Professional & scientific | 2026 |
| NRG Specialist Lending Recruitment Ltd | Administrative & support | 2025 |
| Nrts Consultants Ltd | Professional & scientific | 2018 |
| NRV Mogal Limited | Hospitality | 2023 |
| NS Medicare Ltd | Health & social care | 2016 |
| NSN Hampshire Ltd | Other services | 2017 |
| Nsns Holdings Limited | Other services | 2019 |
| NSR Entertainments Ltd | Hospitality | 2020 |
| NSR Holdings (UK) Limited | Professional & scientific | 2019 |
| NSS Electrical Services Limited | Construction | 2014 |
| Nssp Properties Limited | Real estate | 2024 |
| NST Legal Limited | Professional & scientific | 2012 |
| NST Worldwide Ltd | Arts & recreation | 2022 |
| Nstds Creators Ltd | Information & communication | 2025 |
| NT Optics Limited | Professional & scientific | 2004 |
| NT Property Solutions Ltd | Real estate | 2017 |
| NTK Contractors Ltd | Construction | 2026 |
| NTP Business Consulting Limited | Professional & scientific | 2020 |
| Nu-Ar Company Limited | Administrative & support | 2025 |
| Nubera Nexus Ltd | Wholesale & retail | 2025 |
| Nubilous Limited | Administrative & support | 2017 |
| Nude by Nature Limited | Professional & scientific | 2004 |
| Nudge Coaching Ltd | Extraterritorial | 2024 |
| Nufon Technologies Limited | Information & communication | 2008 |
| Nuibu Outdoors Limited | Wholesale & retail | 2021 |
| Nulla Services Ltd | Health & social care | 2019 |
| Nulli Secundus Barbers Limited | Other services | 2003 |