| M & S Properties (Liverpool) Ltd | Real estate | 2017 |
| M & SON Group Ltd | Wholesale & retail | 2022 |
| M & V Cullen Ltd. | Hospitality | 2020 |
| M a Anthony Family Wealth Trading Limited | Professional & scientific | 2017 |
| M a B Social Ltd | Wholesale & retail | 2020 |
| M a Ceramics Limited | Construction | 2019 |
| M a Hamilton Ltd | Wholesale & retail | 2024 |
| M a Morton Limited | Information & communication | 2009 |
| M and M Trucker Limited | Transport & logistics | 2023 |
| M and P Consultancy Ltd | Professional & scientific | 2009 |
| M Auth Ltd | Administrative & support | 2017 |
| M B E Security Services Limited | Administrative & support | 2014 |
| M Bailey Trading Limited | Agriculture & fishing | 2014 |
| M Bennett Construction Limited | Construction | 2009 |
| M Blundell Project Management Limited | Construction | 2019 |
| M Bogan Education Ltd | Education | 2020 |
| M Borthwick Properties Ltd | Real estate | 2022 |
| M Build Limited | Construction | 2019 |
| M Burns & Co Limited | Wholesale & retail | 2026 |
| M Byte Technical Consulting Ltd | Information & communication | 2015 |
| M C B a Ltd | Professional & scientific | 2018 |
| M C Carpenters Limited | Construction | 2022 |
| M C P Restorations Ltd | Administrative & support | 2019 |
| M C Property North West Limited | Real estate | 2015 |
| M Carragher Limited | Professional & scientific | 2013 |
| M Carter Trading Limited | Professional & scientific | 2016 |
| M Cassidy Limited | Real estate | 2019 |
| M Clark Electrical Ltd | Manufacturing | 2016 |
| M Composites Limited | Manufacturing | 2023 |
| M Contracting and Logistics Ltd | Construction | 2025 |
| M Coyne Electricals Ltd | Construction | 2008 |
| M Design and Build Ltd | Construction | 2016 |
| M Developments (NW) Ltd | Construction | 2019 |
| M Dillon Ltd | Transport & logistics | 2010 |
| M Doyle Engineering Ltd | Construction | 2026 |
| M F 1 Traders Ltd | Wholesale & retail | 2026 |
| M F Prohold Ltd | Wholesale & retail | 2020 |
| M FOX Civils Ltd | Construction | 2023 |
| M Global Foods Ltd | Wholesale & retail | 2023 |
| M H Eventz Ltd | Hospitality | 2023 |
| M H Liverpool Ltd | Hospitality | 2024 |
| M H Phypers Ltd | Information & communication | 2012 |
| M Hathaway Building Services Ltd | Construction | 2015 |
| M Holmes Electrical Services Limited | Construction | 2020 |
| M Igoe Limited | Construction | 1985 |
| M J F Dryliners Ltd | Construction | 2020 |
| M J Mccabe Consulting Ltd | Information & communication | 2021 |
| M J Mcginn Electrical Limited | Construction | 2016 |
| M J Quinn Constructel Limited | Information & communication | 2008 |
| M J Quinn Integrated Services Limited | Construction | 2008 |
| M J Vallance Ltd | Transport & logistics | 2020 |
| M J'S Barber Ltd | Other services | 2019 |
| M K Safety Limited | Administrative & support | 2001 |
| M KN LIM Ltd | Wholesale & retail | 2022 |
| M L F Joinery Limited | Construction | 2019 |
| M L G Electrical Ltd | Construction | 2012 |
| M L Roofing Ltd | Construction | 2011 |
| M Mccormick TM Ltd | Construction | 2024 |
| M Mooney Developments Limited | Construction | 2016 |
| M Oledzki IR Limited | Arts & recreation | 2023 |
| M P and I Ltd | Real estate | 2021 |
| M P Electronic Fire & Security Ltd | Wholesale & retail | 2005 |
| M Palmer Accounting Limited | Professional & scientific | 2023 |
| M People Propery Lets Ltd | Real estate | 2026 |
| M R Foster Ltd | Professional & scientific | 2018 |
| M R Rendering and EWI Ltd | Construction | 2023 |
| M Rowan Joinery Ltd | Construction | 2026 |
| M S Fibre Systems Ltd | Construction | 2019 |
| M S J Properties Ltd | Real estate | 2013 |
| M T Beauvale Ltd | Transport & logistics | 2017 |
| M Three Contracts Limited | Administrative & support | 2000 |
| M W Properties (North West) Limited | Financial services | 2019 |
| M W S Electrical (NW) Ltd | Construction | 2015 |
| M W Sipp Trustees Limited | Financial services | 2003 |
| M Walsh Limited | Construction | 2008 |
| M Walsh Roofing Ltd | Construction | 2018 |
| M Waste Removals Ltd | Water & waste | 2025 |
| M Whitmore Ltd | Education | 2002 |
| M Wilson Electrical Ltd | Construction | 2019 |
| M Yoga Bears Limited | Health & social care | 2012 |
| M&A Design Limited | Construction | 2002 |
| M&A Turkish Consultancy Ltd | Information & communication | 2021 |
| M&A10 Limited | Information & communication | 2023 |
| M&B Capital Group Ltd | Construction | 2017 |
| M&D Pheonix Ltd | Professional & scientific | 2017 |
| M&F Groundwork NW Limited | Construction | 2026 |
| M&H Childwall Properties Ltd | Real estate | 2026 |
| M&I Properties (NW) Limited | Real estate | 2015 |
| M&J Pension Trustee Limited | Administrative & support | 2011 |
| M&K Property Recovery Limited | Real estate | 2019 |
| M&L Bouncy Castle Hire Limited | Administrative & support | 2025 |
| M&L Cleaning Services UK Ltd | Administrative & support | 2022 |
| M&L Travel Liverpool Ltd | Transport & logistics | 2018 |
| M&M Consulting Limited | Professional & scientific | 2018 |
| M&M Overseas Limited | Real estate | 2018 |
| M&M Property Group Developments Ltd | Construction | 2025 |
| M&M Property Group Ltd | Real estate | 2024 |
| M&Mhs Limited | Administrative & support | 2025 |
| M&N Electrical Contractors & Site Services Limited | Construction | 2007 |
| M&Q Consultancy Ltd | Professional & scientific | 2025 |