There is currently an online petition calling for the UK's government to reject the outcome of the EU referendum since the turn out was less than 75% and the winning margin for Leave was less than 4%. It is possible to download the data as a .json file. Part of the process of signing the petition involves indicating where you reside. The vast majority gave their residence as different parts of the UK. But some gave their location as outside the UK. The following is the top ten locations, the code used to get this data is available on my CodeBlog.
Note that the data was downloaded on June 26 in the morning (GMT).