| Great Lakes Insurance SE | 0203 003 7000 | 1 Fen Court, London, EC3M 5BN |
| Great Lakes Insurance UK Ltd | 020 3003 7000 | 1 Fen Court, London, EC3M 5BN |
| Greenwich Underwriting Limited | 02079777652 | St Clare House, 30-33 Minories, London, EC3N 1PE |
| Gringolet Company Limited | 44 20 7382 2063 | 20 Old Broad Street, London, EC2N 1DP |
| Hadron UK Insurance Company Limited | 02922771171 | One Fleet Place, London, EC4M 7WS |
| Hamilton Insurance Designated Activity Company | 02073374433 | 3 Minster Court, Mincing Lane, London, EC3D 7DD |
| Hamilton Managing Agency Ltd for Syndicate1947 | 020 3595 1111 | Level 3, Fenchurch Place, London, EC3M 4AJ, United Kingdom |
| Hardy (Underwriting Agencies) Limited | 020 7626 0382 | 20 Fenchurch Street, London, EC3M 3BY |
| Hartford Underwriting Agency Limited | 020 7220 6000 | 6 Bevis Marks, Floors 7-8, London, EC3A 7BA |
| HCC International Insurance Company plc | 01656 868033 | One Aldgate, London, EC3N 1RE |
