One person has died and three people are missing following the collapse of a building at Didcot A Power Station.
A major incident was declared at the site in south Oxfordshire after initial reports of an explosion at 16:00 GMT.
Thames Valley Fire Control Service confirmed the fatality and also reported four people were injured in a "very severe incident".
The decommissioned Didcot A plant closed in 2013 and demolition work has been taking place.
FutureMedia offers deep sympathy to the family and friends of those involved for this tragedy.