1 GEORGE WIMPEY3 PERSIMMONPeter JohnsonJohn White Peter Johnson, 57, was appointed chief executive of George Wimpey plc in October 2000, having previously held the same position at materials conglomerate The Rugby Group. Johnson has introduced key changes to the plc, beginning with a major restructure involving the merger of the Wimpey Homes and McLean Homes divisions and a shake-up of …