British Airways A321 has made an emergency landing after smoke allegedly engulfed the entire cabin. Passengers on British Airways flight BA422 from London Heathrow to Valencia have been seen using the evacuation slide on the runway in Valencia, Spain

The aircraft involved is G-MEDN, an 11 year old A321, ex BMI aircraft.

Passengers are seen using the evacuation slide on the runway at Valencia, Spain, in a video shared online. In another clip, thick grey smoke is seen in the cabin itself.

One frightened passenger mentioned, "Apparently they flew for 10 minutes with the cabin full of smoke, no info from crew and oxygen masks failed to release."

No injuries have been reported.

A spokesman for British Airways said:

"We are aware of an incident involving one of our aircraft in Valencia. We will release more information as soon as we have it."