I can see the United Kingdom attempting to become a big part in cryptocurrency. This is mainly due to Brexit and the fear of a waining influence in the world. The UK will always be where the money is, simple and I have no doubt the money will eventually be in crypto.
The UK already has a self regulated crypto group called CryptoUK containing Etoro, CEX.io, BlockEx, Coinbase, Coinshares, Commerce Block and Crypto compare and they are already taking a proactive approach in staying in contact with the government.
On top of that the biggest regulatory body in the UK the MIFID (markets in financial instruments directive) have already made it clear they have no intention to regulate.
To some the UK would be a surprise given the links to the banking industry but the banking industry is on a downward trend and the UK will always, always be where the money is