Barry you obviously do not know how much revenue you are getting from the UK OR you are getting such tiny amounts of revenue that you do not care to lose it. But all this raging at the UK Government is silly. Your predictions of doom and outrageous cost are also silly.
The ONLY question on the table is whether you want UK customers or not, period. All your predictions about this or that are foolish nonsense. You don't know the actual cost of anything. LOL Especially if the UK Government hasn't set guidelines yet or put a system in place yet. This will happen when it happens and either you comply or you lose UK revenue.
Maybe you are Russian since you like to argue for argument's sake.