Financial services is one of the most tightly regulated business sectors. The FSA, the Data Protection Act, GDPR, PCI/DSS and Euro SOX all have implications for securing financial data in transit.
Personal data is a valuable commodity. Most financial institutions will hold extensive personal and financial data on their customers, including names, addresses, dates of birth, bank account details, PINs and passwords. Ironically, a lot of this data is held to ensure secure identification of customers in the first place.