Insurance Products

Syndicate 5151

Syndicate 5151, currently managed by Endurance at Lloyd’s, was established in 2007 to underwrite a diversified book of property, marine, engineering and specialty classes of business. As an extension of our London-based Lloyd’s platform Syndicate 5151, we have access to Lloyd’s Brussels via LBS 5385, which is our platform to write European Economic Area syndicate risk post-Brexit.

We are committed to providing insurance and reinsurance solutions that reflect our commitment to professionalism, integrity agility and accountability and are proud to operate at Lloyd’s, the world’s largest subscription insurance and reinsurance market in the world. We recognize that our success is built on the quality of our relationships and on our reputation.

Endurance at Lloyd’s is a wholly owned subsidiary of Sompo International. For 2019, Endurance at Lloyd’s has approved premium of $406M and is authorized by the Prudential Regulation Authority (PRA) and regulated by the Financial Conduct Authority (FCA) and the PRA.


Backed by the financial strength of Lloyd’s and our parent, Sompo International, we bring to our clients expertise built on years of experience, a considerable appetite for risk retention, and an agile and analytic underwriting approach. These attributes combine to create tailored and flexible solutions to our clients’ risk exposures.

Syndicate 5151 has the ability to write business in over 200 countries worldwide by virtue of its access to Lloyd’s licenses and international trading rights. In addition, the Lloyd’s chain of security means all policyholders benefit from the market’s common rating, supported by the Lloyd’s Central Fund.  Lloyd’s is rated:

  • “A+” (Strong) by Standard and Poor’s
  • “A+” by Fitch
  • “A” (Excellent) by A.M. Best

Sompo International provides capital, business infrastructure, and analytical support to Endurance at Lloyd’s.  Sompo International’s principal operating subsidiaries are rated:

  • “A+” (Superior) by A.M. Best (XV size category)
  • “A+” (Strong) by Standard & Poor’s


As part of the Lloyd’s market, we have direct access to the latest information available through global intelligence resources and Lloyd’s worldwide network and we regularly use this knowledge to develop bespoke products that address our clients’ business requirements.  We underwrite the following products from Lloyd’s.

Ground Floor Box 020:

1st Floor Box 194:

2nd Floor Box 206:

In addition, we underwrite property and other specialty treaty reinsurance. Our property treaty portfolio consists of both catastrophe and risk excess business across a broad client base in regional, national and international markets.  We also offer specialty treaty on both a proportional and excess basis and tailor bespoke solutions where traditional placement structures are not appropriate.

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