| Midvale Terrace Ltd | Wholesale & retail | 2025 |
| MIH World Ltd | Information & communication | 2023 |
| Miit Solution Limited | Professional & scientific | 2025 |
| Mike and Anne Limited | Information & communication | 2022 |
| Mike Brown Car Sales Limited | Wholesale & retail | 2003 |
| Milaco Engineering Limited | Administrative & support | 2019 |
| Milano Pizza Blackpool Ltd | Hospitality | 2025 |
| Milburn Homes Limited | Real estate | 2018 |
| Mildot Services Limited | Other services | 2014 |
| Mill Lane Consultants Limited | Information & communication | 2017 |
| Millennium Court (Blackpool) Management Company Limited | Hospitality | 2001 |
| Miller Weavers Ltd | Wholesale & retail | 2025 |
| Milleride Limited | Arts & recreation | 1978 |
| Millers (Singleton) Ltd | Hospitality | 2022 |
| Millers Roofing Ltd | Construction | 2023 |
| Millers Roofing NW Ltd | Construction | 2025 |
| Millfalls Properties Limited | Real estate | 2012 |
| Millfield Court Management (Thornton) Limited | Households | 2007 |
| Millie & Mini Limited | Wholesale & retail | 2019 |
| Millington Property Limited | Real estate | 2017 |
| Millins Ltd | Wholesale & retail | 2012 |
| Million Kisses Ltd | Information & communication | 2011 |
| Mills & Burns Limited | Professional & scientific | 2022 |
| Milltown Trucks Ltd | Wholesale & retail | 2025 |
| Mina Tuly Ltd | Hospitality | 2017 |
| Mind in Motion C.I.C. | Professional & scientific | 2026 |
| Minerva Consultancy Partners Limited | Real estate | 2015 |
| Mini Divani UK Limited | Wholesale & retail | 2020 |
| Mini Me's (Fleetwood) Limited | Health & social care | 2012 |
| Miniflora Limited | Extraterritorial | 1979 |
| Minitechnique Ltd | Wholesale & retail | 2014 |
| Minitechnique Workshop Ltd | Wholesale & retail | 2026 |
| MIR Galleries (Persian Cultural Centre) Ltd | Wholesale & retail | 2025 |
| Mirage Hotel Ltd | Hospitality | 2026 |
| Mirati Technologies Limited | Information & communication | 2020 |
| Mirrorball Productions Limited | Arts & recreation | 2017 |
| Miss Lucy Logistics Limited | Transport & logistics | 2022 |
| Mission Yachting UK Ltd | Extraterritorial | 2024 |
| Mistle Ltd | Construction | 2004 |
| Mitch Allen Electrical Limited | Construction | 2023 |
| Mitchandhisvan Ltd | Transport & logistics | 2024 |
| Mitchell Mechanics Ltd | Professional & scientific | 2019 |
| Mithus & Mithoon(M&M) Healthcare Limited | Public administration | 2025 |
| Miyanky Logistics Ltd | Transport & logistics | 2026 |
| Mizaru Software Ltd. | Extraterritorial | 2013 |
| Mizpha Limited | Health & social care | 2021 |
| MJB NW Ltd | Public administration | 2025 |
| MJC Catering Limited | Hospitality | 2010 |
| MJK Finance Ltd | Professional & scientific | 2018 |
| MJK Trading Ltd | Wholesale & retail | 2020 |
| MJM Facilities Ltd | Real estate | 2025 |
| MJM IT Consulting Ltd | Information & communication | 2018 |
| MJM Trader Ltd | Wholesale & retail | 2025 |
| Mjoeco Ltd | Professional & scientific | 2024 |
| MJR Protection Ltd | Administrative & support | 2024 |
| MJT Body Repairs Ltd | Wholesale & retail | 2024 |
| MJT Cars Ltd | Wholesale & retail | 2024 |
| MJT Letting Solutions Limited | Real estate | 2018 |
| MKP IT Consulting Services Limited | Information & communication | 2017 |
| MKS Real Estates Limited | Real estate | 2018 |
| ML Engineering Consulting Ltd | Information & communication | 2018 |
| Mlamz Ltd | Wholesale & retail | 2023 |
| MLS Ritchie Limited | Professional & scientific | 2015 |
| MLT Executive Transport Ltd | Transport & logistics | 2026 |
| MLW Electrical Ltd | Construction | 2024 |
| Mmbm Ltd | Construction | 2022 |
| MMC Media Ltd | Information & communication | 2011 |
| MME Marine Limited | Extraterritorial | 2024 |
| MMJ Global Ltd | Hospitality | 2013 |
| MMK International Transport Ltd | Wholesale & retail | 2025 |
| Mmlt Leisure Limited | Hospitality | 2024 |
| Mmlv Limited | Real estate | 2019 |
| Mmml Consultants Limited | Information & communication | 2016 |
| MMR Global Limited | Transport & logistics | 2022 |
| Mmwa Ltd | Hospitality | 2019 |
| MNS Kitchen Ltd | Hospitality | 2025 |
| Mobberley Enterprises Ltd | Real estate | 2005 |
| Mobiles Inn Limited | Wholesale & retail | 2022 |
| Mobility Hoist Service Limited | Administrative & support | 2021 |
| Mobility Scooter Blackpool Ltd | Administrative & support | 2020 |
| Mobilitysure Ltd | Wholesale & retail | 2013 |
| Mobiltune Limited | Wholesale & retail | 2006 |
| MOD Pizza UK Limited | Hospitality | 2015 |
| Modacc Communications Ltd | Wholesale & retail | 2025 |
| Mode 2 Enterprise Limited | Information & communication | 2015 |
| Mode Hotel Lytham Limited | Hospitality | 2017 |
| MODE7 Systems Design Limited | Information & communication | 2013 |
| Modern Car Electronics Limited | Administrative & support | 2012 |
| Modern Threads Trading Ltd | Wholesale & retail | 2020 |
| Moerava Limited | Extraterritorial | 2022 |
| Moffatts Automotive Group Ltd | Wholesale & retail | 2024 |
| Moken Digital Ltd | Information & communication | 2020 |
| Moments Event Planners Ltd | Arts & recreation | 2024 |
| Moments in Time Ltd | Wholesale & retail | 2016 |
| Monalisa Group Ltd | Hospitality | 2019 |
| Monarch Burdock Ltd | Wholesale & retail | 2025 |
| Monarch Promenade Apartments Limited | Real estate | 2017 |
| Mondo Property Investments (Blackpool) Limited | Real estate | 2017 |
| Monet Murphy Ltd | Professional & scientific | 2025 |
| Money Laundering Compliance Limited | Professional & scientific | 2007 |