| NO.53 Limited | Real estate | 2025 |
| NOA Cosmetic Tours Ltd | Other services | 2024 |
| Noah's ARK Inn Ltd | Hospitality | 2026 |
| Noble Barbers Derby Ltd | Other services | 2023 |
| Noble Gates Limited | Manufacturing | 2002 |
| Noble Grain Interiors Ltd | Manufacturing | 2025 |
| Noble Purpose Healthcare Ltd | Health & social care | 2024 |
| Noblestone Partners Limited | Real estate | 2024 |
| NOBLUE2 Limited | Information & communication | 2000 |
| NOBLUE2 Saas Limited | Information & communication | 2010 |
| Nocarta Ltd | Health & social care | 2024 |
| Noctorious Property Investments Limited | Real estate | 2022 |
| Node 4 Holdings Limited | Professional & scientific | 2013 |
| Node 4 Limited | Information & communication | 2003 |
| NOI Holding Ltd | Financial services | 2025 |
| Noir LUX Candles Ltd | Manufacturing | 2024 |
| Noise Control Systems Ltd | Professional & scientific | 2005 |
| NOJ Barker Limited | Wholesale & retail | 2026 |
| Noma Psychology Ltd | Education | 2022 |
| Nomad Digital (India) Limited | Extraterritorial | 2012 |
| Nomad Digital Limited | Information & communication | 2002 |
| Nomad Holdings Limited | Information & communication | 2006 |
| Nomad Tackle Ltd | Wholesale & retail | 2025 |
| Noman Rasheed Ltd | Wholesale & retail | 2024 |
| Nonkosi Limited | Real estate | 2023 |
| Noodle Cottages Limited | Real estate | 2021 |
| Noor Optics (Notts) Limited | Health & social care | 2019 |
| Nophi Residential Estates Ltd | Real estate | 2026 |
| Norcon Computers Limited | Information & communication | 1983 |
| Nordbarn Ltd | Professional & scientific | 2022 |
| Nordmind AI Ltd | Information & communication | 2025 |
| Nordovicum LLP | | 2026 |
| Norfolk Vintage & Salvage Ltd | Wholesale & retail | 2020 |
| Normanton Bakery Limited | Manufacturing | 2019 |
| Normanton Cafe Derby Ltd | Hospitality | 2020 |
| Normanton Driving School Limited | Education | 2025 |
| Normanton Hand Car Wash Limited | Administrative & support | 2022 |
| Normanton Investments Limited | Transport & logistics | 2015 |
| Normanton Launderette Ltd | Administrative & support | 2026 |
| Normanton Lodge Limited | Health & social care | 2005 |
| Normanton Mini Market Ltd | Wholesale & retail | 2026 |
| Normanton Mobility Centre Limited | Administrative & support | 2018 |
| Normanton Pizza Limited | Hospitality | 2024 |
| Normcirca Limited | Transport & logistics | 1982 |
| Norri Tifin Ltd | Hospitality | 2026 |
| Norris Water Consulting Ltd | Professional & scientific | 2026 |
| Norse Property Consulting Ltd | Construction | 2025 |
| Norter Holdings Limited | Real estate | 2025 |
| North & South Properties Ltd | Real estate | 2025 |
| North END Design Limited | Professional & scientific | 2020 |
| North Skyfall Lashes Ltd | Other services | 2024 |
| North Star Commercial Finance Ltd | Financial services | 2024 |
| North Street Garage (Derby) Limited | Wholesale & retail | 2018 |
| North Summit Outdoors Ltd | Wholesale & retail | 2026 |
| North Works Management Company Limited | Households | 2024 |
| Northbridge Homes Ltd | Real estate | 2025 |
| Northcote House Nurseries Limited | Education | 1996 |
| Northern Aspect Limited | Manufacturing | 2023 |
| Northernrange Limited | Financial services | 2020 |
| Northgrid Power Engineering Ltd | Construction | 2025 |
| Northlink Digital Ltd | Information & communication | 2010 |
| Northwind Global Logistics Ltd | Transport & logistics | 2026 |
| Northwood (Derby) Limited | Real estate | 2003 |
| Norton Green Residents Management Company Limited | Households | 2015 |
| Norton Signs Limited | Construction | 2025 |
| Noshh Box Ltd | Hospitality | 2018 |
| Nostalgic Clothing Limited | Wholesale & retail | 2012 |
| NOT Cowboy Builders Ltd | Construction | 2026 |
| NOT Just Seen Care& Academy Ltd | Administrative & support | 2023 |
| NOT! Theusualbusiness Ltd | Administrative & support | 2017 |
| Notesense Limited | Information & communication | 2026 |
| Notjustbrownies Ltd | Wholesale & retail | 2020 |
| Notrox Surgical UK Ltd | Wholesale & retail | 2023 |
| Notsa Holdings Ltd | Hospitality | 2026 |
| Notsa Limited | Hospitality | 2024 |
| Nottingham Aggregates Limited | Real estate | 2021 |
| Nottingham Architectural Salvage Limited | Wholesale & retail | 2026 |
| Nottingham Auto Care Ltd | Wholesale & retail | 2023 |
| Nottingham BD (Holdings) Limited | Financial services | 2022 |
| Nottingham Breakdown Service Ltd | Wholesale & retail | 2021 |
| Nottingham Coffee Festival Limited | Administrative & support | 2022 |
| Nottingham Foot and Ankle Limited | Health & social care | 2012 |
| Nottingham Garage Doors Ltd | Manufacturing | 2004 |
| Nottingham Gynaecology Ltd | Health & social care | 2019 |
| Nottingham Heliport Limited | Transport & logistics | 2014 |
| Nottingham Horticulture Ltd | Wholesale & retail | 2018 |
| Nottingham Ready MIX Limited | Extraterritorial | 2007 |
| Nottingham Recovery Ltd | Wholesale & retail | 2024 |
| Nottingham Roman Catholic Diocesan Education Service | Education | 2011 |
| Nottingham Scooter Centre Ltd | Wholesale & retail | 2024 |
| Nottingham Suspended Ceilings Limited | Construction | 1963 |
| Nottingham Symphony Orchestra | Arts & recreation | 2003 |
| Nottingham Tamatanga Ltd | Hospitality | 2009 |
| Nottingham Trim Repairs Limited | Wholesale & retail | 2001 |
| Nottinghamapps Limited | Information & communication | 2023 |
| Notts. & Derby Cash Registers Limited | Manufacturing | 1981 |
| Notts/Derbyshire Cleaning Ltd | Administrative & support | 2007 |
| Noughtpoint Media Ltd | Information & communication | 2025 |
| Nourish Healthcare Solutions Limited | Administrative & support | 2023 |
| Nova Axis Holdings Ltd | Financial services | 2026 |