Sir Roy Gardner, chief executive of Centrica, has been appointed as a non-executive director of Compass Group. Gardner today announced his resignation from Centrica, the UK's biggest energy supplier. Gardner will take on the role of senior independent director from 1 October and will become non-executive chairman of the company during 2006. Sir Francis Mackay, chairman of Compass Group, said: "I am delighted that Roy has agreed to join the board. Roy's experience will be a tremendous asset to the group in the years ahead." Earlier this year, Gardner resigned as chairman of Manchester United after it was taken over by Malcolm Glazer.