Article 50
I hope you read Article 50 of the Lisbon Treaty the UK signed with the EU
This is not a revolution, it is more like a complaint for divorce and a 2 year court case before there is a Court Decree of Divorce -- with terms set. Your visitation right to visit your EU 'brothers' and the UK commercial right do business with them -- are now under negotiation and will not be finalized for 2 years.
The duty free tax zone ends in 2 years. The EU free travel zone ends in 2 years.
Northern Ireland and Scotland are talking deserting the UK and remaining in the EU. The GBP value may keep going down to a parity with the Dollar and the Euro.
Good luck -- you will need it. Only a fool would expect London's financial center to accept the exposure. Money can flash-dance today.