Hardy Underwriting Group
- The major participant and manager in syndicate 382, offering aviation, marine, and non-marine insurance at Lloyd's.
- http://www.hardygroup.co.uk/

Millennium Syndicate 1221 at Lloyd's
- Focuses on marine insurance, including cargo, energy, liability, hull, reinsurance, and engineering. Managed by Navigators Underwriting Agency Limited.
- http://www.1221mlm.com/

Catlin Group Limited
- An underwriter of specialty property/casualty insurance and reinsurance coverages worldwide. Consists of Lloyd's Syndicate 2003 and the Catlin Insurance Company, Ltd.
- http://www.catlin.com/

The Watkins Syndicate
- Lloyds syndicate 457. Specialises in the marine market with capacity provided by Munich Re. Products include cargo, energy, hull, satellite, specie, excess of loss, and war.
- http://www.watkins-syndicate.co.uk/

Faraday Holdings Limited
- Consists of Syndicate 435 at Lloyd's and Faraday Reinsurance Company. Business lines include aviation, property, casualty, and political risk. A division of General Cologne Re.
- http://www.faraday.com/

Beazley
- Syndicates 2623/623 at Lloyd's. Focuses on writing specialty-risk insurance and reinsurance business in selected markets, such as marine, arts, jewellery, and corporate liability.
- http://www.beazley.com/

Chaucer Holdings, Plc
- Holding company for a leading managing agency at Lloyd's. It manages four in-house syndicates (587, 1084, 1096, 1176) and two third-party syndicates (1301, 3210), as a group covering lines for motor and personal, marine, non-marine, and nuclear.
- http://www.chaucerplc.com/

Liberty Syndicates
- Consists of two Lloyd's syndicates. Syndicate 190 focuses on property and treaty casualty insurance, while Syndicate 282 works with lines for reinsurance, war and terrorism, marine, and cargo. Subsidiary of Liberty Mutual.
- http://www.libertysyndicates.com/