| Needham Business Centre Limited | Administrative & support | 2012 |
| Needham Fabrications Limited | Manufacturing | 1997 |
| Needham Gym UK Ltd | Arts & recreation | 2023 |
| Needham Market Academy Ltd | Construction | 2018 |
| Needham Market Aerials Limited | Construction | 2003 |
| Needham Market Dental Practice Limited | Health & social care | 2024 |
| Needham Market FC Limited | Arts & recreation | 2016 |
| Needham Market Hand Car Wash Ltd | Administrative & support | 2026 |
| Needham Market P.O & Shop Ltd | Wholesale & retail | 2024 |
| Needham Market Self Storage Limited | Transport & logistics | 2024 |
| Needham Motor Engineers Ltd | Wholesale & retail | 2024 |
| Needham Quality Butchers Ltd | Wholesale & retail | 2023 |
| NEEDHAM3 Retail Ltd | Wholesale & retail | 2021 |
| Needhamarket Razor Ltd | Other services | 2025 |
| Needhams Holdings Limited | Construction | 2003 |
| Needhamtek Ltd | Other services | 2025 |
| Needinca Limited | Real estate | 1983 |
| Neetdowns Property Co. Limited | Real estate | 1965 |
| NEG Homes Ltd | Administrative & support | 2021 |
| Neil Andrew Office Solutions Limited | Wholesale & retail | 2016 |
| Neil Edwards Ltd | Administrative & support | 2014 |
| Neil Mccarthy Limited | Construction | 2006 |
| Neil Smith Painter & Decorator Ltd | Construction | 2021 |
| Neils Building Services Ltd | Construction | 2025 |
| Nell Window Cleaning Limited | Administrative & support | 2025 |
| Nelson Potter (Dodnash) Limited | Manufacturing | 1992 |
| Nelson Ventures Ltd | Construction | 2024 |
| Nelsons Lettings Ltd | Real estate | 2017 |
| Nelson’S Global Trading Ltd. | Wholesale & retail | 2020 |
| Nema Properties Limited | Real estate | 1997 |
| Nemo Wine Cellars Ltd | Wholesale & retail | 2019 |
| Nene Way Holidays Limited | Hospitality | 2024 |
| Neocorp Estates Ltd | Real estate | 2017 |
| Neocorp Estates Management Ltd | Construction | 2020 |
| Neocorp Hospitality Ltd | Hospitality | 2020 |
| Neocorp Ltd | Financial services | 2015 |
| Neon Street Limited | Administrative & support | 2011 |
| Neotek Resources Limited | Information & communication | 2013 |
| Neptune Marina Limited | Arts & recreation | 2004 |
| Neptune Marina New Holdings Limited | Arts & recreation | 2011 |
| Neptune Marina Properties Holdings Limited | Real estate | 2011 |
| Neptune Marina Properties Limited | Real estate | 1989 |
| Neptune Print & Promotional Services Ltd | Manufacturing | 2021 |
| Neptune Sailing | Arts & recreation | 2012 |
| Nera Holdings Ltd | Real estate | 2023 |
| Neravion Works Limited | Information & communication | 2026 |
| Nero Niru Limited | Wholesale & retail | 2025 |
| Nerostorm Limited | Information & communication | 2008 |
| Ness Hospitality Limited | Professional & scientific | 2026 |
| Nestia Ltd | Real estate | 2025 |
| Nestrovo Ltd | Information & communication | 2023 |
| Nestta Consulting Limited | Information & communication | 2015 |
| Nesvent Limited | Wholesale & retail | 2022 |
| Net-Ctrl Limited | Information & communication | 2002 |
| Net-Trekking Limited | Information & communication | 2011 |
| Netelco Ltd | Construction | 2026 |
| Netrisk Limited | Information & communication | 2015 |
| Network Design & Implementation Limited | Information & communication | 2003 |
| Network Smart System Ltd | Wholesale & retail | 2020 |
| Networx Utilities Limited | Construction | 2016 |
| Neuro Occupational Therapy East Ltd | Health & social care | 2023 |
| Neurodivergent Abilities CIC | Administrative & support | 2023 |
| Neutral Territory Limited | Professional & scientific | 2021 |
| Neverland Holdings Ltd | Financial services | 2021 |
| Neverland London Limited | Hospitality | 2016 |
| New AGE Plumbing and Heating Services Ltd | Construction | 2021 |
| New Approach Partnership Limited | Administrative & support | 2013 |
| New Centric Solutions Limited | Wholesale & retail | 2022 |
| New Concept Properties Ltd | Real estate | 2019 |
| New CUT West Properties LLP | | 2023 |
| New Dwells Limited | Real estate | 2019 |
| New Global Logistics Limited | Transport & logistics | 2026 |
| New Golden Ship Ltd | Real estate | 2026 |
| New Hampshire Communications Limited | Information & communication | 2001 |
| New Heritage Solutions Community Interest Company | Education | 2010 |
| New Homes (Suffolk) Ltd | Construction | 2014 |
| New Horizons Introductions Limited | Other services | 2019 |
| New Istanbul Barber Limited | Wholesale & retail | 2020 |
| New Oriental Star Limited | Hospitality | 2023 |
| New Pocket Enterprises Limited | Wholesale & retail | 2022 |
| New Rose Management Limited | Professional & scientific | 2025 |
| New Skill Centre Ipswich Ltd | Health & social care | 2025 |
| New Strand Trading Ltd | Wholesale & retail | 2025 |
| New Street Woodbridge (Management Company) Limited | Households | 2024 |
| New View Builders Ltd | Construction | 2025 |
| New View Construction Ltd | Construction | 2015 |
| New Way Transport Ltd | Transport & logistics | 2018 |
| New Weather CIC | Health & social care | 2013 |
| New Wolsey Theatre Productions Limited | Arts & recreation | 2014 |
| Newbold Consulting Limited | Professional & scientific | 2024 |
| Newbuck Holdings Limited | Real estate | 2023 |
| Newincco 1399 Limited | Professional & scientific | 2016 |
| Newincco 1400 Limited | Financial services | 2016 |
| Newis Framing Limited | Manufacturing | 2005 |
| Newland Andrews Consultancy Ltd | Information & communication | 2024 |
| Newlet Marketing Ltd | Wholesale & retail | 2026 |
| Newlife Upholstery Ltd | Manufacturing | 2024 |
| Newmace Properties Limited | Households | 1973 |
| Newmarket Chamber of Commerce Ltd. | Other services | 2014 |
| Newmarket Lettings Ltd | Real estate | 2003 |