Mike, who is Regius Professor of Life Sciences at the University of Dundee, has been on the Board of Governors since January 2012.
Wellcome’s chair Eliza Manningham-Buller says: "Mike’s new role will allow us to benefit from even more of his expertise."
Mike says: "I look forward very much to serving Wellcome as deputy to Eliza. Wellcome is an extraordinary organisation. To assist with its mission is an extraordinary privilege. I would like to thank sincerely the outgoing Deputy Chair, Kay, whose example in that role will be an inspiration."