As a UK citizen I am not too worried as I do not believe that our government even has an understanding of cryptocurrency. In general in the UK people are highly uninformed on the matter as it is and our retraction from the EU will lead to us needing to find other means of accessing the global market. GBP doesn't currently cope well with this matter so I hope to see cryptocurrency adoption rise in the UK. This may not be the case though. Time will tell.
RE: Europes Central Bank Discussing Cryptocurrencies