© Joel Goodman - 07973 332324 . No syndication permitted . FILE PICTURE DATED 14/11/2013 . Manchester , UK . A man in a suit crosses the main foyer of the Co-operative's new corporate HQ at 1 Angel Square . The chairman of the Co-operative Group , Len Wardle , has resigned after a sex and drugs scandal involving the group's former banking chairman , Paul Flowers . Queen Elizabeth II and the Duke of Edinburgh visit the Coop building at 1 Angel Square , Manchester , this morning ( 14th November 2013 ) . Photo credit : Joel Goodman