To an extent I agree, Nigel. This is very much a case of "Identify a problem. Agree what needs to be done. Do it. End of issue."

There is no inherent need for it to be a deal breaker. As to whether it is a minor issue, well, perhaps not if the people to be extradited are accused of terrorism rather than fraud.

However, agreeing what needs to be done is not simple since the EU citizens want EU rights when extradicted, which will be tricky if that includes rights ordinary UK citizens don't have. So I don't see getting such an agreement as necessarily straightforward.