Was told by a guy that was working security at Farnborough that he was shopping in Asda in Farnborough when get got a call to say that there was a mayday aircraft en-route, he made Asda to the main gate in 6 minutes... was told that the reason for the mayday was, when the pilot could not get permission to land, he through a wobbly, declared a low fuel mayday, and headed off to Farnborough...