Armed police have responded to a major incident at Heathrow Airport. At least two arrests have reportedly been made, while police, firearms unit, ambulance and fire engines are understood to be in attendance at the London airport.

A major incident is unfolding at Heathrow Airport with armed police at the scene and drivers urged not to leave their vehicles at Terminal 3 car parks

Searches continue for more suspects, after armed police arrested a man at a Heathrow Airport car park on suspicion of a "pepper spray assault". A total of 21 people were treated, with five taken to hospital.

Details about the nature of the issue remain limited, but services on the Heathrow Express and part of the Elizabeth Line were suspended