| W R Berkley Insurance Europe Group | +4420 7280 9045 | 2nd Floor, 40 Lime Street, London, EC3M 7AW, United Kingdom |
| W R Berkley Syndicate Management Ltd | | |
| Wakam UK Ltd | | |
| Watford Insurance Company Europe Limited | | |
| West Bay Insurance PLC | | |
| West Bay Insurance PLC | 08448 710 471 | John Garth House, Engine Lane, Stourbridge, West Midlands, DY9 7DF, United Kingdom |
| Western Captive Insurance Company Limited | | |
| XL Insurance Company Ltd | 0207 933 7431 | FAO John Hewat, XL House, 70 Gracechurch Street, London, EC3V 0XL, United Kingdom |
| XL London Market Ltd | 0207 933 7820 | FAO Luke Bonham, XL House, 70 Gracechurch Street, London, EC3V 0XL, United Kingdom |
| XX 02 Insurer | | |
