hmm true but last I heard the UK is part of the 5 eyes.
that actually consists of Australia, Canada, New Zealand, the United Kingdom and the United States.
Not Europe. So access to that will remain, and tbh the UK's inteligence network is world class, europe loose access to that from us as well as us loosing access to theirs.
So what happens when both sides have something the other want, they establish a treaty to trade. They will have to be renegotiated just like very other type of exchange between europe and the UK.
Sure some countries are going to make big noises about it they want people to come to them and see brexit as an opertunity. Nothing new nothing to see.