| M U Khokhar Ltd | Other services | 2019 |
| M&H Bookkeeping Todmorden Limited | Professional & scientific | 2025 |
| M.G.Caravan Company Limited | Construction | 1946 |
| Mahmood Bros Ltd | Wholesale & retail | 2020 |
| Mams Shop Ltd | Wholesale & retail | 2019 |
| Mandy Indiana LLP | | 2025 |
| Mankinholes Hall Limited | Hospitality | 2024 |
| Mankinholes Water Board Limited | Administrative & support | 2023 |
| Mark Routledge Electrical Services Limited | Construction | 2003 |
| Markland Restoration & Crafts Ltd | Manufacturing | 2019 |
| Marshalls of Todmorden Limited | Wholesale & retail | 1963 |
| Martin Newell Consultancy Ltd | Professional & scientific | 2015 |
| Mary & the Elements Ltd | Health & social care | 2022 |
| Masud &Co Limited | Hospitality | 2025 |
| Mata Care Ltd | Health & social care | 2025 |
| Matrix Independent Ltd | Administrative & support | 2007 |
| MB UK Traders Ltd | Wholesale & retail | 2022 |
| MCB Electrical Contractors (NW) Limited | Construction | 2013 |
| Mclernon James Properties Limited | Real estate | 2024 |
| Mcmillan Landscapes Ltd | Administrative & support | 2022 |
| Medallionflame Ltd | Wholesale & retail | 2019 |
| MIH PVT Ltd | Hospitality | 2025 |
| Mike Hall Acib Limited | Financial services | 2003 |
| Milkin' IT and More Ltd | Hospitality | 2023 |
| Mill Bank Close Apartments Limited | Households | 2023 |
| Milton and Mortimer Ltd | Manufacturing | 2016 |
| Mini ME (Yorkshire) Limited | Agriculture & fishing | 2019 |
| Mitchell & Mitchell Properties Limited | Real estate | 2017 |
| MJS Developments NW Ltd | Construction | 2023 |
| MM Automobils Ltd | Wholesale & retail | 2023 |
| Mondavia Ltd | Construction | 2021 |
| Monkey Mezzanini Limited | Hospitality | 2021 |
| Monro Roofing Ltd | Construction | 2022 |
| Moonlight Shop 1111 Ltd | Wholesale & retail | 2023 |
| Moors and Dales Limited | Construction | 2026 |
| Motorcycle Stars Ltd | Wholesale & retail | 2022 |
| Mpharm Locums Ltd | Wholesale & retail | 2008 |
| MR Wilson's Second Liners Ltd | Arts & recreation | 2015 |
| Mulberry Boutique Stays Ltd | Real estate | 2024 |
| Mulheran D Limited | Wholesale & retail | 2020 |
| Mushroomsalmon Ltd | Transport & logistics | 2019 |
| My Bombay Lounge Ltd | Hospitality | 2025 |
| My Rams DEN Limited | Real estate | 2025 |
| Nafsak Properties Ltd | Real estate | 2026 |
| NAN Moor’S Promotions Ltd | Arts & recreation | 2026 |
| Natural Endings Limited | Wholesale & retail | 2008 |
| Navigation Supply Co. Limited | Wholesale & retail | 1980 |
| ND Matters in the Community CIC | Education | 2024 |
| ND Matters Ltd | Education | 2023 |
| Nebouldproperties Ltd | Real estate | 2026 |
| Nectar Metals Ltd | Water & waste | 2026 |
| Nest Financial Services (UK) Ltd | Administrative & support | 2017 |
| Neutron Software Ltd. | Information & communication | 2012 |
| New Ohms Ltd | Construction | 2020 |
| Next Tour Ltd | Professional & scientific | 2012 |
| Nick Farrimond Film Production Ltd | Information & communication | 2022 |
| Nicklety Homes Limited | Construction | 2016 |
| Nightingale Floor Recordings Limited | Information & communication | 2026 |
| Noir Gifts Limited | Wholesale & retail | 2011 |
| North West Public Transport Users' Forum Community Interest Company | Professional & scientific | 2007 |
| Noshahi Burger Ltd | Hospitality | 2024 |
| Nuvo Studio Ltd | Professional & scientific | 2010 |
| OI Enterprise Limited | Wholesale & retail | 2021 |
| OJ Trans-Atlantic Logistics & Consulting Ltd | Wholesale & retail | 2024 |
| OJS Rigging & Lifting Solutions Ltd | Construction | 2019 |
| OJS Testing Ltd | Construction | 2021 |
| Online Import Trading Limited | Wholesale & retail | 2020 |
| Orchan Associates Limited | Professional & scientific | 2022 |
| Ordersage Ltd | Administrative & support | 2019 |
| Oreglinite Ltd | Hospitality | 2020 |
| Original Equestrian Ltd | Education | 2024 |
| Outdoors Izzy Ltd | Hospitality | 2022 |
| Paint and Paper (Todmorden) Limited | Wholesale & retail | 2023 |
| Painton Faders Limited | Manufacturing | 2023 |
| Pakistan Fast Food Ltd | Hospitality | 2026 |
| Pakistan Takeaway Ltd | Hospitality | 2024 |
| Parker Properties North West Ltd | Real estate | 2024 |
| PDQ Property Solutions Limited | Real estate | 2006 |
| Pennine Access Ltd | Construction | 2023 |
| Pennine Housing Ltd | Households | 2025 |
| Penta Plus Projects Ltd | Construction | 2024 |
| Perry Richards Management Services Limited | Health & social care | 2004 |
| Petsit London Ltd | Other services | 2017 |
| Pextenement Cheese Company Limited | Manufacturing | 2008 |
| Pextenement Properties Limited | Real estate | 2022 |
| Phithus Ltd | Administrative & support | 2019 |
| Physique Gym Ltd | Arts & recreation | 2017 |
| Pink Pyjamas Productions Ltd | Information & communication | 2021 |
| Pinnacle Risk Consultancy Limited | Administrative & support | 2016 |
| Pivotal Digital Ltd | Information & communication | 2010 |
| PJ, CE & PJ Stephenson Ltd | Real estate | 2026 |
| PJT Quality Construction Limited | Construction | 2023 |
| Porcus Events Ltd | Hospitality | 2017 |
| Porcus Ltd | Wholesale & retail | 2022 |
| Porcus People Limited | Agriculture & fishing | 2013 |
| Porters Books Ltd | Information & communication | 2025 |
| Positive Outcome Associates Ltd | Other services | 2010 |
| Premier Range Group Limited | Wholesale & retail | 2021 |
| Prestige Cars (Walsden) Limited | Wholesale & retail | 2003 |
| Preston's of Rossendale Limited | Construction | 2012 |