The reprocessing of spent nuclear fuel from around the world at Sellafield's THORP plant has ended.
Opened in 1994, it is one of only two commercial nuclear fuel reprocessing plants in the world. The plant will continue to be used as a storehouse for spent fuel until the 2070s.
Our Deputy Chief Inspector, Dr Mina Golshan, explains what the end of reprocessing at THORP means for our regulation.