| Newfield International Company Limited | Extraterritorial | 1980 |
| Nexus Walton Ltd | Professional & scientific | 2025 |
| Nialson Limited | Real estate | 2013 |
| NIC4 Limited | Real estate | 2014 |
| Nick Bayes Property Services Ltd | Households | 2017 |
| Nine Yard Marketing Ltd | Professional & scientific | 2025 |
| NINE50 Limited | Professional & scientific | 2018 |
| Niocast Digital Ltd | Information & communication | 2016 |
| Niocom Associates Ltd | Information & communication | 2013 |
| Nittygritty Property Holdings Limited | Real estate | 2026 |
| NJL Mortgage Services Ltd | Financial services | 2017 |
| Nolan & Sons Properties Limited | Real estate | 2024 |
| North West Capital Ventures Ltd | Financial services | 2020 |
| North West Fire Extinguishers Ltd | Extraterritorial | 2021 |
| North West Skincare Ltd | Health & social care | 2010 |
| Northwich Capital Ventures Number 3 Ltd | Administrative & support | 2021 |
| Northwood (Macclesfield) Limited | Real estate | 2006 |
| Northwood (Sandbach) Limited | Real estate | 2012 |
| Norton Consultants Ltd | Professional & scientific | 2024 |
| Nottingham DAB Ltd | Information & communication | 2021 |
| Noughts and Crosses Pizza Limited | Hospitality | 2018 |
| Nova Body Sculpting Ltd | Health & social care | 2025 |
| NPT Electrical Services Limited | Manufacturing | 2015 |
| NS Acquisition Ltd | Extraterritorial | 2012 |
| NTG Soccer Events Limited | Administrative & support | 2025 |
| Nu-Floor Polymers Limited | Construction | 2021 |
| Nubold Group UK Holdings Ltd | Financial services | 2024 |
| Nueko Ltd | Information & communication | 2025 |
| Nurse AMY Ltd | Education | 2025 |
| Nutrifx Ltd | Wholesale & retail | 2012 |
| Nutrition FX Ltd | Wholesale & retail | 2010 |
| NW Engineering Limited | Manufacturing | 2021 |
| Nwevents Limited | Arts & recreation | 2018 |
| Nwth Ltd | Transport & logistics | 2023 |
| Nxtgen Consulting Ltd | Administrative & support | 2011 |
| NYA Birth Collective Ltd | Professional & scientific | 2026 |
| O Group (Sandbach) Ltd | Construction | 2025 |
| O&R Transport Ltd | Transport & logistics | 2016 |
| Oak Childcare Limited | Education | 2010 |
| Oak Consultants Ltd | Professional & scientific | 2022 |
| Oakdale Farm Cheshire Ltd | Agriculture & fishing | 2024 |
| Oakey Investments Limited | Financial services | 2023 |
| Oakley Management Associates Limited | Professional & scientific | 2018 |
| Oakset Ltd | Professional & scientific | 2011 |
| Oasis Plants Limited | Construction | 2018 |
| ODE Reformer Cheshire Ltd | Other services | 2026 |
| Odyn Systems Limited | Information & communication | 1997 |
| OG Forwarding Limited | Transport & logistics | 2022 |
| Oketop Limited | Construction | 1989 |
| Oldmid Management Limited | Households | 2022 |
| OLE Engineering Services Limited | Professional & scientific | 2014 |
| Olive & AVA Prints Ltd | Manufacturing | 2019 |
| Olive Spice Curry House Ltd | Hospitality | 2024 |
| Ollie and Phee Limited | Wholesale & retail | 2016 |
| Olympian Sheds Limited | Manufacturing | 1984 |
| Omiworld Tech Limited | Information & communication | 2025 |
| Omni Commercial Sales Ltd | Wholesale & retail | 2020 |
| Omnia Plumbing & Heating Ltd | Construction | 2013 |
| Omnia Trading Ltd | Wholesale & retail | 2024 |
| Omoco Ltd | Manufacturing | 2011 |
| ON Track Attire Ltd | Wholesale & retail | 2023 |
| One Earth Services Ltd | Administrative & support | 2020 |
| Opal Construction Services Ltd | Construction | 2022 |
| Opal Creative Solutions Ltd | Information & communication | 2017 |
| Opal Financials Ltd | Financial services | 2010 |
| Opass Distribution Ltd | Health & social care | 2015 |
| OPT 2 Vape Limited | Wholesale & retail | 2021 |
| OPT2VAPE Wolstanton Ltd | Wholesale & retail | 2025 |
| Optimised Process Solutions Ltd | Information & communication | 2023 |
| Optimux Digital Ltd | Information & communication | 2020 |
| Orchard Hearing Limited | Wholesale & retail | 2020 |
| ORD & Ward Brickworks Limited | Construction | 2025 |
| Originem Solutions Limited | Other services | 2019 |
| OUR 4 Legged Friends C.I.C. | Health & social care | 2015 |
| Outsource Automation Solutions Limited | Information & communication | 2020 |
| Overcast Products Ltd | Wholesale & retail | 2026 |
| Oxmus Limited | Information & communication | 2025 |
| P & M Preston Properties Limited | Real estate | 2022 |
| P L S Services Limited | Construction | 2001 |
| P. Miles Brickwork Contractors Limited | Construction | 2001 |
| P.P.R.S. (Northwest) Ltd | Wholesale & retail | 2009 |
| P10 Consulting Ltd | Information & communication | 2024 |
| P2 Internet Limited | Construction | 1999 |
| P3HOLDINGS Ltd | Professional & scientific | 2020 |
| Pacific Moto Ltd | Wholesale & retail | 2016 |
| Paddy Lennon Engineering Limited | Professional & scientific | 2014 |
| Palin Developments Ltd | Real estate | 2025 |
| Palka Ltd | Hospitality | 2017 |
| PAN Construction Solutions Ltd | Construction | 2022 |
| Panacea Group Limited | Wholesale & retail | 2021 |
| Panacea Logic Limited | Wholesale & retail | 2016 |
| Panacea Nexus Limited | Wholesale & retail | 2021 |
| Panemorfi Limited | Professional & scientific | 2020 |
| Paperlate Limited | Professional & scientific | 2003 |
| Paps Peri Limited | Hospitality | 2025 |
| Paps Pizza Limited | Hospitality | 2026 |
| Paramount Coaching Ltd | Health & social care | 2021 |
| Park House Care Home Limited | Health & social care | 2011 |
| Park House Paraplanning Limited | Administrative & support | 2017 |
| Parker Haworth Bioscience Limited | Professional & scientific | 2017 |