A flight from
Flight BA119 turned back minutes after take off at 3.30pm this afternoon.
It is, at the moment, unclear what the nature of the emergency is.
A BA Boeing 777, like that pictured in this file photo, has declared an emergency
According to data on Flight Radar 24, the aircraft departed Heathrow around 3.30pm and at 3.41 reached 24,000 feet when the pilot initiated a rapid decent and dropped to 10,000 feet within nine minutes.
It has spent almost an hour circling the English Channel around 15 miles south of an area from Bognor Regis to Brighton.
According to British Airways: ‘The pilots have requested a priority landing into Heathrow as a precaution due to a technical issue.’