| Mitsui Sumitomo Insurance Co Europe Limited | 020 7977 8321 | 25 Fenchurch Avenue, London, EC3M 5AD, United Kingdom |
| Montpelier Underwriting Agencies Ltd | | |
| MS Amlin Insurance SE (UK Branch) | | |
| MSIG Europe SE UK Branch | | |
| MSIG Europe SE UK Branch | | |
| Multi Risk Indemnity Company Limited | | |
| Munich Re Syndicate Ltd | 020 7886 3900 | St. Helens, 1 Undershaft, London, EC3A 8EE, United Kingdom |
| Municipal Mutual Insurance Ltd | 0121 697 8897 | MMI claims at Zurich Insurance, Occupational Disease Claims Team, 126 Hagley Road, Edgbaston, Birmingham, B16 9PF |
| National Pharmacy Association Insurance | | |
| New Hampshire | | |
