| NJE Transport Services Ltd | Transport & logistics | 2017 |
| NN Convenience Store Ltd | Wholesale & retail | 2026 |
| NO.20 Elysian Hair and Beauty Ltd | Other services | 2019 |
| North Coast Group Ltd | Professional & scientific | 2023 |
| North Wales Anaesthesia Ltd | Health & social care | 2025 |
| North Wales Antiques Co Ltd | Wholesale & retail | 2026 |
| North Wales Bait Supplies Limited | Administrative & support | 1998 |
| North Wales Building Renovations Limited | Construction | 2023 |
| North Wales Cars Ltd | Wholesale & retail | 2020 |
| North Wales Coast Limited | Hospitality | 2022 |
| North Wales Coins Limited | Extraterritorial | 1973 |
| North Wales Compliance Solutions Ltd | Construction | 2024 |
| North Wales Dragons Limited | Arts & recreation | 2012 |
| North Wales Equestrian Limited | Agriculture & fishing | 2012 |
| North Wales Fire & Security Ltd | Professional & scientific | 2014 |
| North Wales Golf Limited | Wholesale & retail | 2022 |
| North Wales Greener Solutions Ltd | Construction | 2023 |
| North Wales Gynaecology Limited | Health & social care | 2021 |
| North Wales Logistics Ltd | Transport & logistics | 2017 |
| North Wales Mersey DEE Business Council Limited - Cyngor Busnes Gogledd Cymru a Merswy Dyfrdwy Cyfyngedig | Other services | 2019 |
| North Wales Plant Ltd | Transport & logistics | 2021 |
| North Wales Reflections Limited | Other services | 2021 |
| North Wales Surgical Solutions Limited | Health & social care | 2024 |
| North Wales Technologies Limited | Other services | 2016 |
| North Wales Tiling Limited | Construction | 2018 |
| North Wales Tourism - Cwmni Twristiaeth Gogledd Cymru | Other services | 1990 |
| North Wales Web Studio Limited | Other services | 2020 |
| North West Dental Equipment Ltd | Wholesale & retail | 2026 |
| North West Property Services KB Ltd | Construction | 2026 |
| Northern Pottery and Linen Company Limited | Wholesale & retail | 1979 |
| Northfield Property Developments Limited | Construction | 2018 |
| Northwest Builders Ltd | Construction | 2008 |
| NOT a Boring Box Ltd | Wholesale & retail | 2024 |
| NOT Quite WED YET Limited | Hospitality | 2020 |
| Novem IT Limited | Information & communication | 2000 |
| Novem Midco Limited | Information & communication | 2012 |
| NR ELM Ltd | Real estate | 2025 |
| NS Dineen Ltd | Construction | 2018 |
| NW Electrical Installations Ltd | Construction | 2018 |
| NW Reflections Holdings Ltd | Health & social care | 2024 |
| NW Rendering Ltd | Construction | 2025 |
| NW Site Services Limited | Construction | 2007 |
| NW Weed Control Ltd | Other services | 2024 |
| NWB Group Ltd | Construction | 2016 |
| NYE Williams Limited | Real estate | 2015 |
| O P Farming Ltd | Agriculture & fishing | 2024 |
| O'Connor Petrophysics Limited | Professional & scientific | 2025 |
| Oakes Logistics Ltd | Transport & logistics | 2022 |
| Oakwood Management (North Wales) Limited | Professional & scientific | 2009 |
| OBA Kope Ltd | Health & social care | 2022 |
| Odette Developments LLP | | 2024 |
| Offshore Global Recruitment Ltd | Administrative & support | 2006 |
| Oggys Properties Limited | Real estate | 2016 |
| Oilbd Consultants Ltd | Professional & scientific | 2023 |
| Oltra Services Ltd | Information & communication | 2025 |
| Omega-Ms Limited | Administrative & support | 2016 |
| ON Prolbem Ltd | Information & communication | 2025 |
| Online Developers Ltd | Professional & scientific | 2023 |
| Openears Hearing Ltd | Wholesale & retail | 2022 |
| Opulent Escapes Travel Limited | Administrative & support | 2024 |
| Ormeside Joinery Manufacturers Limited | Manufacturing | 2015 |
| Osborns Legal Limited | Professional & scientific | 2014 |
| Otung Limited | Information & communication | 2018 |
| Otung Property Limited | Real estate | 2018 |
| Owen Plough Ltd | Hospitality | 2026 |
| Owen UK Limited | Water & waste | 1994 |
| Owen's Catering Limited | Hospitality | 2016 |
| Oxygen Gym Ltd | Arts & recreation | 2018 |
| P H Evans Plumbing Ltd | Construction | 2019 |
| P J L Offshore Limited | Professional & scientific | 2025 |
| P.& W.Broilers Limited | Agriculture & fishing | 1960 |
| Pabo Tree Services Ltd | Wholesale & retail | 2017 |
| Padder's Properties Ltd | Real estate | 2020 |
| Pangaea Geochemistry Services Limited | Mining & quarrying | 2020 |
| Paradox Health and Fitness Ltd | Arts & recreation | 2016 |
| Parallel Imaging Limited | Health & social care | 2014 |
| Parallel Imaging Solutions Limited | Health & social care | 2021 |
| Parent PA Ltd | Information & communication | 2026 |
| Parkland Financial Management Limited | Financial services | 2003 |
| Parry and Jones Group Ltd | Construction | 2023 |
| Parry Legal Representation Ltd | Professional & scientific | 2025 |
| Parry's Commercials Ltd. | Wholesale & retail | 1989 |
| Parrys Blinds Ltd | Wholesale & retail | 2020 |
| Partnershipstwentyone Ltd | Information & communication | 2026 |
| Paul Christie Associates Ltd | Construction | 2024 |
| Peach Group Ltd. | Administrative & support | 2000 |
| Peak Elevation Coaching Limited | Education | 2023 |
| Pembroke Nursing Homes Limited | Health & social care | 2000 |
| Pengarnedd Properties Limited | Construction | 1989 |
| Penjen Limited | Real estate | 2025 |
| Perfect Indoor Garden Ltd | Other services | 2019 |
| Personaliseme Print Ltd | Manufacturing | 2023 |
| Petals Llandudno Limited | Wholesale & retail | 2010 |
| Petdex Limited | Information & communication | 2020 |
| Petroleum Geosciences Consultancy Limited | Mining & quarrying | 2016 |
| PH Psychology Services Ltd | Health & social care | 2018 |
| Phenlor 1 Ltd | Extraterritorial | 2011 |
| Phil Pearson Consulting Ltd | Information & communication | 2022 |
| Phil Smith Roofing and Building Ltd | Construction | 2022 |
| Phone Shop (Chester) Ltd | Wholesale & retail | 2012 |