A Scotland Yard spokeswoman said: “We were called at 9.35am on Thursday 18 June to Kew Road, Richmond, to reports of a body discovered. Officers and the London Ambulance Service attended and found the body of a dead man on the roof of a business premises. The death is currently being treated as unexplained.
“A postmortem examination will be held in due course and inquiries are ongoing to establish the male’s identity. No arrests have been made.
“In regards to the male who survived, police were alerted at 8.28am on 18 June to reports of a suspected stowaway on a flight from Johannesburg to Heathrow.