BREAKING British Airways #BA327 from Paris CDG to London LHR is declaring an emergency. Live:

UPDATE The flight made an emergency landing due to ‘burning smell’.

UPDATE 21:48UTC Pilots were wearing oxygen masks while declaring mayday.

UPDATE We have confirmation British Airways BA327 safely landed at LHR.

UPDATE 23:35UTC We receiving reports British Airways BA327 has technical issue.

UPDATE 21:34UTC British Airways BA327 is on final approach runway 27L.

UPDATE Captain Mitch Neve explains different cases of emergency: