‘Jihadi John’ and the three London schoolgirls who travelled to Syria to join Islamic State were radicalised in Britain. Here, our writer describes his own experience of being lured to the extremist fringes of a religion To get to the kingdom of Heaven you had to descend 14 steps below street level and then breathe through your mouth – the cellar where the North Cumbria Full Gospel Fellowship held its meetings might be the only way into paradise but the damp, subterranean air wasn’t exactly the freshest.For two years in the 1980s, I was a member of this fundamentalist, born-again group. It gathered once a week under the Congregational church, and at its fringes bordered on a cult. Joyce Armstrong was very much on this radical wing. Her teenage son played the guita