Former Credit Suisse banker Duncan Walker has joined Seven Investment Management (7IM) as its chief financial officer.

He replaces 7IM’s former chief financial officer Charles Sparrow, who is set to leave the firm in 2020 after 18 years. Mr Sparrow was one of the founders of 7IM.

Mr Walker officially joined on 21 October, according to public filings.

Most recently, he worked for QInvest for five years, and prior to this was at Credit Suisse for 13 years, including as the chief financial officer for the Middle East and Africa.

The firm, majority owned by Caledonia Investments, has made a number of s...