About us

About Us - London bridge


Tamesis – a unique wholesale treaty reinsurance MGA.

Established in London in October 2011, Tamesis commenced underwriting in 2012 and since 2016, has also developed underwriting offices in the USA, underwriting business emanating from North, South and Central America as well as the Caribbean.

Today, with capacity provided by Allianz (AGCS SE and AGR US) and Tokio Marine Kiln Syndicates, we write almost US$ 225m of nett written premium income. 

Through exceptional short and long-term underwriting results, excellent risk management, transparency, integrity and consistency, we have built, and continue to build long standing, valued relationships with all our business partners. 


For brokers and clients...

We aim to provide consistency and creativity across multiple classes, as well as excellent security.

For capacity providers...

We enable participation in the specialty treaty reinsurance market through a platform with established distribution, underwriting and portfolio management.   

For our colleagues...

We offer a challenging, rewarding environment as part of a small, ambitious team.

Risk appetite

Find out more

Meet the team