The head of international marketing at the wealth management arm of Bank of America Merrill Lynch has left after just four months in the role to join rival Royal Bank of Scotland.

Ian Ewart has joined RBS as director of marketing across all of its private banking brands, which include Coutts & Co, RBS International and Adam & Company. He has had a 25-year career in the financial services industry, including stints at Barclays Wealth and HSBC.