FD is understood to have won the brief following a competitive pitch process thought to have included Maitland, Tulchan Communications, Citigate Dewe Rogerson. Brunswick and Finsbury were not in the running due to conflicts over their respective work with Barclays and RBS.
At the start of the year FD held the retained financial accounts of Northern Rock and RBS, before these were taken by Brunswick and Finsbury respectively.
FD's involvement will be led by Andrew Walton, MD of financial communications (UK), reporting to HSBC's head of group press office, Patrick McGuinness.
HSBC launched a wide-ranging review of its agency relationships in December 2008 to unify its global corporate and financial PR accounts. This process was subsequently shelved, with the bank preferring to remain using a number of corporate agencies across the globe.
The bank also recently handed Quiller Consultants its HSBC's UK public affairs business, replacing Burson-Marsteller on the account.