| Shelbourne Syndicate 2008 | 01483 452 622 | Avaya House, Cathedral Hill, Guildford, Surrey, GU2 7YL, United Kingdom |
| SI Insurance (Europe) SA | 0207 337 2929 | 1st Floor, Minster Court, Mincing Lane, London, EC3R 7BB, United Kingdom |
| SiriusPoint International Insurance Corporation | 02037723103 | 4th Floor, 20 Fenchurch Street, London, EC3M 3BY, United Kingdom |
| Sompo Japan Nipponkoa Insurance Company of Europe | 0207 337 2929 | F.A.O. Tim Whitfield, Claims Manager, 6 Devonshire Square, London, EC2M 4YE, United Kingdom |
| Soteria Insurance Limited | 0345 999 8888 | c/o Markerstudy Insurance Services Limited, Arndale House, Arndale Centre, Manchester, M4 3AQ |
| Sovereign Marine & General Ins c-o Pro Global | 01452 782500 | Southgate House, Southgate Street, Gloucester, GL1 1UB |
| Spectrum Syndicate Management Ltd - Syndicate 1204 | | |
| Sphere Drake Insurance | 020 7977 1601 | RiverStone Management Ltd, Mint House, 77 Mansell Street, London, E1 8AF, United Kingdom |
| St Julians Insurance Company Limited | 08448 710 471 | Mobilers Insurance Services, John Garth House, Engine Lane, Stourbridge, West Midlands, DY9 7DF, United Kingdom |
| Starr International (Europe) Limited | 0207 398 7874 | 4th Floor, 30 Fenchurch Avenue, London, EC3M 5AD |
