CNN yesterday.
UK police say they made 40 arrests for Syria-related offences in the first three months of this year, almost double the number of the entire previous year.
Richard Walton, head of Scotland Yard's counter-terrorism command, warned last year there were signs these recruits could be turned around to launch attacks in the UK. "I don't think the public realizes the seriousness of the problem," he said. "The penny hasn't dropped. But Syria is a game-changer."

Has your penny dropped yet Jim?