A body was discovered in the wheel bay of Boeing 747-436 G-BNLU this morning when it arrived into London Heathrow as BA58 from Cape Town. It is understood that a man was spotted scaling the perimeter fence at Cape Town and approaching the aircraft as it prepared for departure. A search was made of the airfield but not of the aircraft. G-BNLU was released to traffic later and operated BA285 London Heathrow – San Francisco.