MLL722 (1952) AEC Regal IV . Park Royal RDP37C. Ex-BEA Heathrow 1080 . Seen 2011 Purfleet . After years of being vandalised at a yard in Asford , what's left of the bus .. is now destined to be used as parts for Rhy's old Regal IV MLL735 , also stored by Ensign . Photo = David Beardmore .