Clarence Mitchell has been appointed to head Burson-Marsteller’s Public Affairs practice following the departure of George Hutchinson.

Mitchell has been working at B-M as a managing director since September 2011 providing strategic counsel to corporate and public affairs clients.

Burson-Marsteller UK has also hired Michael Hartt to join its Corporate and Crisis practice as a director. Hartt comes from Edelman’s Washington office, where he led campaigns on behalf of businesses, governments and global non-profit organisations.