The survey questioned 555 people in Spain, France, Italy, Germany, the Czech Republic and Hungary and asked them whether they were worried about the impact of Britain potentially leaving the European Union, to which 68% replied “yes”.
Meanwhile, 24% answered “no”, while the remaining 8% did not know.
Nigel Green, the chief executive of deVere Group, said: “These results show there is major concern about a possible Brexit amongst the thriving expat communities in the EU.
“Whichever way the vote goes on 23 June, there are likely to be repercussions for many British expats across Europe.”
He warned that a ‘Brexit’ would not be good news for British expats with assets in the UK and questioned the effects it may have retired expats and those still working in the EU.
Green said: “Will UK pensions continue to be paid, inflation-linked, to those expats living in the EU? Or will the UK government try to save money? What will the other EU countries’ policies be towards British families’ access to education and healthcare?
“If we refuse to accept free movement of EU labour, will UK expats be able to carry on working in the EU? Will they be able to own assets, such as houses or businesses, under their own name?”