Japan has an ambivalent relationship with Britain over nuclear. The history is not encouraging. In 1941 many of Britain’s top scientists left their war-threatened research labs in the UK to join a unique group of international scientists in the secret Manhattan Atomic Bomb project in the US. Today Japanese companies are involved in proposals to build new reactors at Wylfa, Oldbury and Moorside near Sellafield. David Lowry looks into the nuclear connections between the two countries.