Mark Smith, who has severe health issues, says he was told three times he needed to do nothing in order to remain after Brexit

A seriously ill British man living in Sweden has been forced into hiding amid fears he will be deported as a result of what he says is a government Brexit residency error.

Mark Smith, 60, who has had heart attacks, strokes, severe headaches and chronically high blood pressure that has been difficult to treat, was told on the phone he should leave Sweden by 17 October as he was an “alien” without permission to stay.