Mid-air emergency declared on WestJet flight between London and Canada

Pilots have declared an emergency on a flight from London to Canada because of an apparent engine warning.

The WestJet flight WS27 left Gatwick Airport on Saturday just before 11am and was in the air for more than two hours before it made a sudden diversion.

The emergency signal was reportedly made because of a warning light on the aircraft's engine.

Flight tracking websites show the plane was heading towards Keflavik airport in Iceland.

It was also reported the plane dumped fuel as it was held at 11,000ft near Reykjavik.

The flight safely landed in Iceland shortly before 4pm.

The plane was due to land in Edmonton, Canada at 12.59pm local time.

A spokeswoman for Canadian airline WestJet said an emergency was declared "out of an abundance of caution" and the aircraft will undergo maintenance in Iceland.

She added: "Guests will be reaccommodated as soon as possible. We are currently making arrangements for hotels and meal vouchers.

"WestJet sincerely apologises to our guests for the inconvenience and thanks them for their patience."