| Markel International Insurance Company Limited | 020 7953 6000 | 20 Fenchurch Street, London, EC3M 3BY |
| Markel Syndicate Management Limited | 00 4420 7953 6000 | 20 Fenchurch Street, London, EC3M 3BY |
| Markerstudy Insurance Company Ltd | 01227 284700 | Markerstudy Insurance Services Ltd, Prospect House, Thanet Way, Whitstable, West Midlands, CT5 3FD, United Kingdom |
| Max at Lloyd's Limited | | |
| Medical & Commercial International Limited | 07874 866284 | Syndicate 1902 Medical & Commercial International Limited, Jane O'Flaherty, Head of Claims, 1st Floor, 145 Leadenhall Street, London, EC3V 4QT, United Kingdom |
| Mercantile Indemnity Company Ltd | 02070688354 | Pro Insurance Solutions Ltd, Southgate House, Southgate Street, Worthing Road, Gloucester, GL1 1UB |
| Methodist Insurance PLC (MIC) | 0161 817 6525 | Benefact House, 2000 Pioneer Avenue, Gloucester Business Park, Brockworth, Gloucester, GL3 4AW, United Kingdom |
| Mitsui Sumitomo Ins Co (Europe) Ltd | 0207 977 8321 | The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AG, United Kingdom |
| MS Amlin Insurance SE (UK Branch) | | |
| MSIG Europe SE, UK Branch | 020 7746 1000 | The Leadenhall Building, 122 Leadenhall Street, London, EC3V 4AG |
