| Nalbina Ltd | Administrative & support | 2025 |
| Nalestar Holdings Ltd | Professional & scientific | 2021 |
| Nali Autos Limited | Wholesale & retail | 2025 |
| Nali Properties Ltd | Real estate | 2024 |
| Nalla Consultancy Ltd | Professional & scientific | 2025 |
| Nalla Properties Ltd | Real estate | 2025 |
| Nalmorfield Ltd | Transport & logistics | 2015 |
| Nalo Group Ltd | Professional & scientific | 2025 |
| Nalor Ltd | Information & communication | 2025 |
| Nalwick Results Ltd | Transport & logistics | 2015 |
| NAM Khang Supermarket Limited | Wholesale & retail | 2021 |
| Namaste Indian Restaurant Ltd | Hospitality | 2019 |
| Namaste Sutra Ltd | Wholesale & retail | 2025 |
| Namche Restaurant Limited | Hospitality | 2019 |
| Name Done Ltd | Information & communication | 2023 |
| Named SOX Limited | Wholesale & retail | 2018 |
| Nami Car Parts Limited | Wholesale & retail | 2020 |
| Nan-Tech Ltd | Wholesale & retail | 2026 |
| Nana Wholesale Ltd | Wholesale & retail | 2025 |
| Nana's African Emporium Ltd | Wholesale & retail | 2019 |
| Nanak Investment Holdings Limited | Financial services | 2020 |
| Nanak Investments UK Limited | Real estate | 2020 |
| NANDANASIRI9IT Ltd | Information & communication | 2021 |
| Nandani Ltd | Real estate | 2023 |
| Nandha Property Investments Limited | Real estate | 2025 |
| Nandu Cons Ltd | Construction | 2025 |
| Nangreaves Illustrious Ltd | Transport & logistics | 2015 |
| Nanhil Ltd | Health & social care | 2019 |
| Nano Furniture Ltd | Wholesale & retail | 2022 |
| Nano Properties Limited | Real estate | 2023 |
| Nano Sasloo Ltd | Real estate | 2021 |
| Nanostix Leicester Ltd | Wholesale & retail | 2018 |
| Nansen Ockerby Ltd | Wholesale & retail | 2025 |
| Nanton Care Services Ltd | Health & social care | 2019 |
| Naohon Consultancy Limited | Professional & scientific | 2018 |
| Naomi Dwyer Independent Funeral Services Ltd | Other services | 2026 |
| NAP Time Limited | Hospitality | 2017 |
| NAP Trading Limited | Wholesale & retail | 2026 |
| Napcroft Business Ltd | Wholesale & retail | 2015 |
| Napit Pods Ltd | Hospitality | 2021 |
| Napora Restaurants Ltd | Hospitality | 2017 |
| Naqavi Ltd | Health & social care | 2013 |
| Naqavi Properties Ltd | Real estate | 2018 |
| Naqvi GP Services Ltd | Health & social care | 2021 |
| Naran Jewellers Limited | Wholesale & retail | 2024 |
| Naranjo Ltd | Health & social care | 2022 |
| Narans & Johal Limited | Real estate | 2012 |
| Narbhavi Properties Ltd | Real estate | 2023 |
| Narbles Ltd | Administrative & support | 2016 |
| Narborough & District Bowling & Social Club Limited | Arts & recreation | 1947 |
| Narborough & Littlethorpe Leisure Gardeners CIC | Agriculture & fishing | 2019 |
| Narborough Fascias Ltd | Construction | 2026 |
| Narborough GAS & Plumbing Limited | Construction | 2018 |
| Narborough Hotel Limited | Hospitality | 2014 |
| Narborough Landscapes and Fencing Limited | Other services | 2010 |
| Narborough Properties LLP | | 2022 |
| Narborough Scaffold Services Ltd | Construction | 2019 |
| Narborough Wood Properties Ltd | Real estate | 2020 |
| Nareik Holdings Ltd | Administrative & support | 2024 |
| Naresh Chavda Ltd | Financial services | 2017 |
| Naresh Food and Wine Limited | Wholesale & retail | 2019 |
| Narka Interiors Ltd | Extraterritorial | 2024 |
| Narna Ltd | Construction | 2026 |
| Narp Capital Ltd | Real estate | 2013 |
| Narrowgate Ltd | Manufacturing | 2013 |
| Narrowtrans Limited | Extraterritorial | 2024 |
| Narsing Capital Limited | Administrative & support | 2019 |
| Nartopa Invest Limited | Real estate | 2023 |
| Nartopa Ltd | Professional & scientific | 2018 |
| Narwal Wealth Management Ltd | Financial services | 2013 |
| NAS Properties (Leicester) Limited | Construction | 2023 |
| NAS Surgical Solutions Ltd | Health & social care | 2022 |
| Nasaah Ltd | Administrative & support | 2025 |
| Nascoglobal Limited | Manufacturing | 2006 |
| Naseby Reservoir Carp Fishery Limited | Agriculture & fishing | 2024 |
| Nash Capital Ltd | Real estate | 2019 |
| Nashe Limited Company Limited | Health & social care | 2016 |
| Nashehomes Limited | Real estate | 2025 |
| Nashih Habesha Shop Ltd | Wholesale & retail | 2026 |
| Nashspark Services Ltd | Administrative & support | 2025 |
| Nashtawala Limited | Hospitality | 2018 |
| Nashville Burg Limited | Hospitality | 2026 |
| Nasim Holdings Ltd | Real estate | 2023 |
| Nasim's Homemade Savouries Limited | Hospitality | 2022 |
| Nasim's Limited | Construction | 2020 |
| Nasjen Limited | Real estate | 2021 |
| Nassau Business Growth Ltd | Professional & scientific | 2018 |
| Nassif Holdings Ltd | Financial services | 2024 |
| Nassif Residentials Ltd | Real estate | 2025 |
| Nassr Trading Ltd | Wholesale & retail | 2021 |
| Nastenka Womens Health Clinic Ltd | Professional & scientific | 2026 |
| Nasza Dely Leics Ltd | Wholesale & retail | 2017 |
| NAT Futures Limited | Health & social care | 2026 |
| NAT Properties Ltd | Real estate | 2017 |
| NAT Retail Ltd | Hospitality | 2026 |
| Nat-T Healthcare Ltd | Public administration | 2022 |
| Nata Services Ltd | Administrative & support | 2017 |
| Natabra Properties Limited | Real estate | 2016 |
| Natalie Holden Property Ltd | Real estate | 2024 |
| Natalie Packer Educational Consultancy Ltd | Education | 2014 |