Livingstone, who was most recently the Wall Street bank's chief country officer for Australia and New Zealand, is taking charge at a time when financial institutions in the U.K. and Europe are reorganizing in anticipation of a hard Brexit.

In his previous stint in the EMEA, Livingstone was the vice chairman of the investment banking and capital markets division in the region.

Cowles, who has been heading the EMEA region since 2013, is leaving to establish a not-for-profit organization, the memo said.

(Reporting by Bharath Manjesh in Bengaluru; Editing by Arun Koyyur)