The big question is how this news will affect retail investors elsewhere.
Brexit is going to have a huge impact (I pray to god not only negative effects) for people further Europe borders. It seems that Britain it is not the only country in the world where old people is deciding the younger generations' future pushing them over their limits. London's financial markets are the primary clearing house for Euro/USD transactions. There is absolutely no good reason for the EU to permit this business to remain outside of its borders where member states cannot benefit from the profits and taxes of this business. We can presume that no matter how nice Britain is to its former partner that this industry will be moving. EU cities are already lining up to be the new home for Euro/USD clearing.