HCC Aviation insures approximately 45,000 aircraft in the United States and more than 60 countries worldwide.

[11] The company underwrites Directors and officers liability insurance through its HCC Global subsidiary.

[13] Houston Casualty Company was authorized by Her Majesty's Treasury in 1998 to operate a full branch office in the United Kingdom.

[14] In anticipation of Brexit, a new insurance company, Tokio Marine Europe S.A. (TME), was set up in Luxembourg, following regulatory approval from the Commissariat aux Assurances (CAA) and the Japanese Financial Services Authority (JFSA).

With approval from the High Court of England and Wales, the Part VII process of transferring the existing portfolio of policies written out of Continental European operations to Tokio Marine Europe S.A. was executed.

[16] The company is based in Houston, Texas, but it also has offices in Connecticut, Frederick (Maryland), Ireland, the United Kingdom, and New York.