The greedy Brits are not big loss, most dangerous is distance to the U.S.

It's still doable without the UK. As Banking is international. You can tax it on the front end or the back end of the transaction. Meaning, You can still do the business in the UK, but they can still get you when you move the money to the EU.

Much like how Governments tax expats who live overseas.

 

Just transact outside of the EU and use an untraceable paper trail .
The world would laugh at such a silly and selfish EU idea .