HSBC has dismissed Stuart Scott, its London-based head of currencies trading, in connection with the global investigations that have led to the bank paying $620 million in fines on both sides of the Atlantic, according to a person familiar with the matter.

Scott was fired on December 9 from a role that involved supervising the bank's foreign-exchange trading operations. He joined the bank in 2007, according to the UK financial regulator's register. Reached by phone, he declined to comment.