Inside the world's toughest jail: Syrian prison 'worse than Guantanamo' houses Brits among the 4,000 ISIS fighters held there - as experts warn a jailbreak could 'form a terrorist army overnight'
Shahan Choudhury, pictured, was allegedly radicalised while on remand at Belmarsh Prison in London by hate preacher Anjem Choudary before fleeing to Syria.
Read more »