Through Transport Mutual Insurance Association Limited and TT Club Mutual Insurance Limited, trading as the TT Club. TT Club Mutual Insurance Limited, registered in the UK (Company number: 02657093) is authorised by the Prudential Regulation Authority and regulated in the UK by the Financial Conduct Authority and Prudential Regulation Authority. In Hong Kong, TT Club Mutual Insurance Limited is authorised and regulated by the Hong Kong Insurance Authority, in Singapore by the Monetary Authority of Singapore and in Australia by the Australian Prudential Regulation Authority. In the United States, TT Club Mutual Insurance Limited is approved as a surplus lines insurer in all states and is accessible through properly licensed surplus lines brokers. The registered offices are: 90 Fenchurch Street, London, EC3M 4ST.

Through Transport Mutual Insurance Association Limited, registered in Bermuda (Company number: 1750) is authorised and regulated in Bermuda by the Bermuda Monetary Authority. 

The UK VAT Identification number for Through Transport Mutual Insurance Association Limited is: GB 564 5244 35 and for TT Club Mutual Insurance Limited is: GB 564 3375 30. The Italian VAT Identification number for TT Club Mutual Ltd is: 03627210101.