| Nant Issa Hall Farm Limited | Real estate | 2018 |
| Nant View Developments Limited | Construction | 2024 |
| Nantmawr Management Ltd | Professional & scientific | 2025 |
| Narrow Boat Inn Ltd | Hospitality | 2018 |
| National Autos Limited | Wholesale & retail | 2024 |
| Nationwide Waste Services Limited | Water & waste | 2007 |
| Navigator Media & Advertising Ltd | Manufacturing | 2020 |
| NAZ Eastern EYE Ltd | Hospitality | 2024 |
| NAZ Property Investments Ltd | Real estate | 2025 |
| Neil Harris Electrical Ltd | Manufacturing | 2024 |
| Neil the Knit Limited | Wholesale & retail | 2022 |
| Nemesis V Limited | Education | 2021 |
| Netcine Limited | Real estate | 2002 |
| Netleap.Io Ltd | Information & communication | 2024 |
| Netpmd Design and Integration Limited | Information & communication | 2013 |
| Netpmd Ltd | Construction | 2019 |
| New House Farm Stud Limited | Agriculture & fishing | 2010 |
| New Leaf Counselling & Well-Being Ltd | Health & social care | 2019 |
| Newbridge Day Nursery Ltd | Education | 2026 |
| Newgate Clocks Limited | Extraterritorial | 2020 |
| Newgate World Limited | Manufacturing | 2000 |
| Newland Limited | Construction | 1989 |
| Nexa Law Limited | Professional & scientific | 2016 |
| Niche Patisserie Ltd | Manufacturing | 2020 |
| Nicholas Llewelyn Ltd | Other services | 2023 |
| Nick Cheetham Consulting Limited | Professional & scientific | 2023 |
| Nile Delights Ltd | Hospitality | 2025 |
| Nilsbtraining Ltd | Education | 2021 |
| Nitran Transport Limited | Transport & logistics | 2015 |
| NJB Cooling Ltd | Construction | 2022 |
| NO Fall Ltd | Construction | 2020 |
| NO7 Duncan ST Limited | Hospitality | 2022 |
| Noakes Building Services Limited | Construction | 2013 |
| Norlog (UK) Limited | Manufacturing | 2012 |
| North American Securities Limited | Financial services | 2010 |
| North Shropshire Transport Limited | Transport & logistics | 1999 |
| North Wales Sporting Club Limited | Arts & recreation | 2025 |
| Northwest LEO Ltd | Wholesale & retail | 2017 |
| Northwood Consult Ltd | Professional & scientific | 2022 |
| Nortnewydd Limited | Agriculture & fishing | 2014 |
| Norton Building Co Ltd | Construction | 2023 |
| Norwood Design and Development Ltd | Information & communication | 2006 |
| Notwood Investments Limited | Construction | 2014 |
| Novomes Roni Limited | Wholesale & retail | 2024 |
| NTN Autos Limited | Wholesale & retail | 2017 |
| NUT Tree Farm Limited | Extraterritorial | 2008 |
| NUT Tree LLP | | 2009 |
| Nyke Energy North West Ltd | Other services | 2018 |
| Nyke Energy Services Limited | Other services | 1996 |
| Nyke EOT Trustee Limited | Financial services | 2023 |
| O Nitran Transport Ltd | Transport & logistics | 2022 |
| O-Cab Ltd | Transport & logistics | 2026 |
| OAF America Limited | Information & communication | 2024 |
| Oak Apple Investments Limited | Financial services | 2020 |
| Oak Inn Properties Limited | Real estate | 2014 |
| Oak Street Garage Oswestry Limited | Wholesale & retail | 2013 |
| Oakhurst Hall Estates Limited | Real estate | 2022 |
| Oakwood Grange, Morda, Residents' Association Limited | Households | 2016 |
| Obsidian Tint Ltd | Wholesale & retail | 2025 |
| OCC Trading Limited | Other services | 2014 |
| Occasions 4 U Limited | Professional & scientific | 2007 |
| Ocean Telecom (UK) Limited | Wholesale & retail | 1999 |
| Oerley Way 1969 Limited | Extraterritorial | 2015 |
| Offas Brewing Company Ltd | Manufacturing | 2026 |
| Office 81 Limited | Real estate | 2022 |
| OGC Trading Limited | Arts & recreation | 2021 |
| OKB Installations Limited | Construction | 2024 |
| OLA Holdings Ltd | Professional & scientific | 2015 |
| Old School House Oswestry Ltd | Hospitality | 2021 |
| Old Station Yard (Penybont) Management Company Limited | Households | 2023 |
| Oliver's Wholesale Ltd | Wholesale & retail | 2022 |
| Onsp Ltd | Real estate | 2007 |
| Open Space Studios CIC | Education | 2018 |
| Openhouse Restaurants Limited | Hospitality | 2024 |
| OPER8 Ltd | Information & communication | 2025 |
| OPR Consultants Limited | Professional & scientific | 2022 |
| Optimax Business Solutions Limited | Professional & scientific | 2012 |
| Option 13 Ltd | Information & communication | 2008 |
| Orion Professional Services Limited | Professional & scientific | 2025 |
| Orka (Innovation) Ltd | Manufacturing | 2024 |
| Orthopaedic Institute Ltd | Health & social care | 1994 |
| Orviston Limited | Construction | 1987 |
| Osflow Ltd | Construction | 2023 |
| Osgo Clinic Limited | Health & social care | 2016 |
| Osnosh CIC | Water & waste | 2019 |
| Ospods Limited | Manufacturing | 2013 |
| Osteopathic Health Care Limited | Health & social care | 2016 |
| Oswald Road Property Management Limited | Real estate | 2015 |
| Oswalds Cars Ltd | Transport & logistics | 2021 |
| Oswalds Property and Holdings Limited | Financial services | 2024 |
| Oswell Penda Pharmaceutical Ltd | Manufacturing | 2018 |
| Oswestry and District Agricultural Society | Agriculture & fishing | 1999 |
| Oswestry and North Shropshire Model Engineering Society | Arts & recreation | 1997 |
| Oswestry BID Limited | Other services | 2017 |
| Oswestry Borderland Tourism Limited | Other services | 2010 |
| Oswestry Care Limited | Health & social care | 2000 |
| Oswestry Community Action | Health & social care | 1997 |
| Oswestry Equestrian Limited | Agriculture & fishing | 2021 |
| Oswestry Focus CIC | Other services | 2025 |
| Oswestry Freemasons Hall Company Limited | Other services | 2019 |