ALERT Air Transat #TS123 to Toronto now holding at London LGW after Goaround. Live:

UPDATE Air Transat #TS123 returned to London Gatwick due to a technical issue with door.

UPDATE Air Transat #TS123 returned to LGW due to a technical issue.

UPDATE 14:55 UTC Air Transat #TS123 just landed at London Gatwick followed by fire vehicles.