A year after they plumped for Brexit and two months after they voted to take away the government’s majority, nearly three-quarters of Britons think their country is on the wrong track. That is the most in nearly five years, and the eighth-highest of 26 countries surveyed by Ipsos, a polling firm. Health care and terrorism are Britons’ main worries, along with poverty. Concern over immigration—the biggest beef of 2016, and a powerful driver of the vote to “take back control” from the EU—has halved.