| Nicholas Interiors Ltd | Manufacturing | 2011 |
| Nicholas Vale Broomlands Limited | Real estate | 2022 |
| Nicholas Vale Homes Limited | Real estate | 2016 |
| Nicholas Vale Leisure Limited | Administrative & support | 2023 |
| Nicholas Van Hire Ltd | Wholesale & retail | 2013 |
| Nicholas Vehicle Services Ltd | Wholesale & retail | 2023 |
| Nicholls Stellar BPR Trading Limited | Professional & scientific | 2022 |
| Nicholson (Beechams) Limited | Real estate | 2019 |
| Nicholson (Freehold) Limited | Financial services | 2016 |
| Nicholson (NO. 1) Limited | Real estate | 2014 |
| Nicholson (NO. 2) Limited | Real estate | 2015 |
| Nicholson (NO. 3) Limited | Real estate | 2017 |
| Nicholson (NO. 4) Limited | Real estate | 2023 |
| Nicholson (Pilkingtons) Limited | Real estate | 2020 |
| Nicholson (Rise) Limited | Real estate | 2024 |
| Nicholson (Threadneedle) Limited | Real estate | 2024 |
| Nicholson Asset Management Limited | Real estate | 2016 |
| Nicholson Construction Limited | Construction | 2016 |
| Nicholson Design & Build Limited | Professional & scientific | 2018 |
| Nicholson Employment Services Limited | Administrative & support | 2019 |
| Nicholson Group (PJN) Limited | Real estate | 2019 |
| Nicholson Homes Limited | Construction | 2021 |
| Nicholson Lettings Limited | Real estate | 2021 |
| Nicholson Maintenance Limited | Real estate | 2019 |
| Nicholson Studio Ltd | Professional & scientific | 2020 |
| Nick Boles Ltd | Professional & scientific | 2025 |
| Nick Cosmomedia Ltd | Transport & logistics | 2019 |
| Nick Huber Consulting Ltd | Information & communication | 2016 |
| Nick O'Sullivan Registered Farrier Services Ltd | Agriculture & fishing | 2017 |
| Nick Peet Limited | Arts & recreation | 2017 |
| Nick Pyne Limited | Real estate | 2014 |
| Nick Saltrese Limited | Information & communication | 2007 |
| Nick Shore Consulting Ltd | Professional & scientific | 2022 |
| Nickkycee Limited | Other services | 2026 |
| Nickleford Care Homes Ltd | Health & social care | 2000 |
| Nickmar Limited | Real estate | 2019 |
| Nickson & Associates Limited | Professional & scientific | 1994 |
| Nicky O'Connell Consulting Ltd | Other services | 2012 |
| Nico Recruitment Solutions (NRS) Ltd | Administrative & support | 2020 |
| Nico Recruitment Solutions Ltd | Administrative & support | 2018 |
| Nico Scrap Metal Ltd | Construction | 2024 |
| Nicoflo Limited | Manufacturing | 2020 |
| Nicol Aviation Ltd | Manufacturing | 2009 |
| Nicola Carragher Limited | Professional & scientific | 2015 |
| Nicola Cunningham Hair Limited | Other services | 2023 |
| Nicola Harris Beauty Ltd | Other services | 2011 |
| Nicola Harris Reiki (Liverpool) Ltd | Other services | 2024 |
| Nicola Hughes Ltd | Other services | 2015 |
| Nicola Mclaughlin Limited | Financial services | 2019 |
| Nicola Prior Training Academy Limited | Education | 2020 |
| Nicolae Raducanu Limited | Information & communication | 2016 |
| Nicoletaamazon Ltd | Transport & logistics | 2025 |
| Nicorclothing Ltd | Wholesale & retail | 2024 |
| Nicosia Catering Ltd | Hospitality | 2019 |
| Nicotine Database Limited | Professional & scientific | 2024 |
| Nics Care Ltd | Health & social care | 2026 |
| Nidan Ltd | Households | 2016 |
| Niderfyn Ltd | Wholesale & retail | 2015 |
| Nifty Records Ltd | Information & communication | 2019 |
| Niger Medic Limited | Health & social care | 2014 |
| Night and Day Liverpool Limited | Health & social care | 2024 |
| Night at the Ranch Ltd | Information & communication | 2025 |
| Nightfly Limited | Administrative & support | 2017 |
| Nightingale Opticians Limited | Health & social care | 2010 |
| Nigsy & Nelly Ltd. | Construction | 2013 |
| Nihad Health Ltd | Health & social care | 2025 |
| Niharika Liverpool Ltd | Wholesale & retail | 2023 |
| Niilo Ltd | Wholesale & retail | 2026 |
| Niirvana Stays Limited | Hospitality | 2024 |
| Nijs Properties Limited | Real estate | 2026 |
| Niki Private Ltd | Transport & logistics | 2020 |
| Niko & Alfy Ltd | Hospitality | 2026 |
| Niko Barber Ltd | Other services | 2019 |
| Niko Haircut Ltd | Other services | 2025 |
| Nikolas Aurelian Ltd | Construction | 2025 |
| Nikolov Chauffeurs Ltd | Transport & logistics | 2025 |
| Nikolov M Ltd | Construction | 2015 |
| Niksskin Aesthetics Ltd | Other services | 2016 |
| NIL Satis Nisi 2 Limited | Construction | 2014 |
| NIL Satis Nisi Limited | Construction | 2007 |
| NIL Satis Store Limited | Wholesale & retail | 2014 |
| Nile CT Management Ltd | Real estate | 2025 |
| Nile Enterprises Ltd | Wholesale & retail | 2024 |
| Nile Niche Limited | Real estate | 2022 |
| Nilsen Property Group Ltd | Real estate | 2020 |
| Nimai Ltd | Real estate | 2021 |
| Nimble Services Limited | Construction | 2016 |
| Nimbuscore Ltd | Wholesale & retail | 2025 |
| Nimrod Holdings Group Limited | Construction | 2019 |
| Nimvko Ltd | Wholesale & retail | 2024 |
| Nina Arama Ltd | Health & social care | 2023 |
| Nina Cakes Ltd | Manufacturing | 2025 |
| Nina Nashi Ltd | Information & communication | 2025 |
| Nina's Newsagent Ltd | Wholesale & retail | 2022 |
| Nine and TEN Oakfield Ltd | Hospitality | 2020 |
| Nine Dragons Restaurant Limited | Hospitality | 2007 |
| Nine Holdings UK Trading Ltd | Wholesale & retail | 2026 |
| Nine Ninety Two Ltd | Wholesale & retail | 2021 |
| Ninellos Ltd | Hospitality | 2023 |
| Nineteen Agency Ltd | Administrative & support | 2019 |