About 1.3 million British citizens live in EU countries, while about 3 million EU nationals live in the UK 7. The top locations for Britons living on the continent are:

Most British people living in Europe are either engaged in skilled work, own property or are retirees living on their pensions. People who are established, and living legally, in a country are certainly not going to be expelled. One reason for this is that many retired British people live in European countries (for example, the 18,067 living in Greece) that are either poor or suffering from the Eurozone's austerity policies; the income they provide is highly valued. People with an established legal residency are not going to be expelled.

(more here: eurofacts@telegraph.co.uk )

This prospect is just another example of the scare-mongering by the Remain side.