The European atomic energy community, Euratom, deals with the peaceful use of nuclear energy. It's not technically part of the EU. So why is Britain leaving it - and what are the implications of the decision to leave? We hear about the crucial role Euratom plays in the nuclear energy industry, as well as its oversight of the nuclear material required for medical purposes. Plus, there's Euratom part in a hugely important nuclear fusion research project. Experts on nuclear material are anxious and puzzled about what Britain's future relationship with Euratom will be. Chris Morris tries to get to grips with all this nuclear con-fusion. Producer: David Edmonds.