Claim: Nearly one in five British Muslims has some sympathy with those who have fled the UK to fight for IS in Syria.
Fact-check: Do one in five UK Muslims sympathise with Britons fighting for IS? - Full Fact
Verdict: the survey asked about sympathy with "young muslims who leave the uk to join fighters in syria", not just those fighting in the conflict, and not just those fighting for is.
Organisation: Full Fact
Author: Sam Ashworth-Hayes
Date published: 2015-11-23T00:00:00