Statement from the CAA
Following the referendum on EU membership there will be no immediate change to civil aviation regulation nor the CAA's role in the EU and the European Aviation Safety Agency.
Any future changes will depend on the outcome of the UK's negotiations on exiting the EU. We will be working closely with the Department for Transport in assisting the UK Government in the months ahead as discussions progress.
http://www.caa.co.uk/News/Statement-on-EU-referendum-vote/