If you want to stay close to the UK and outside of EU, I guess Switzerland or Iceland make most sense for this type of business.
Otherwise you could move to Americas, South Africa or Asia.
I think the GP was saying "outside the EU" because of our worries about the EU's political direction regarding encryption in the link at the bottom of the original post. However, logiclabs has pointed out that our worries on that point were probably misplaced.
You could as well say “and move to a country starting with P“ ...
Specially considering that UK is in the EU.