Leading the way.

Thomas Miller is an international provider of market leading insurance services. Most of the businesses we own or manage are acknowledged leaders in their chosen markets.

From financially secure foundations with regulatory-friendly processes, we build solid, sustainable businesses that deliver the highest quality services and significant returns.

Thomas Miller's principal activities include:

  • Management services for transport and professional indemnity insurance mutuals
  • Managing general agency
  • Professional services including technical services, legal services, captive and claims management
  • Investment management for institutions 

International Reach

18 locations worldwide.

Our international reach is a key component in our ability to service clients and customers all over the world. From day-to-day business support to emergency response, we are there. No compromise.


The growth of Thomas Miller for well over a century has been based on prudent financial strategy, the highest standard of risk management and sophisticated investment planning.

Gross Written Premium

$1.3 billion 

Gross Written Premium

Thomas Miller manages over $1.3 billion of gross written premium for the Transport, Specialty and Professional Services industries in the mutual, MGA and captive markets.