First response

London is under siege. Nine men in suicide vests primed to explode hold hostages in nine different locations around the city, and are ready to die for their cause. Their mission: to force the government to release jihadist prisoners from Belmarsh Prison. Their deadline: six pm today. But the bombers have no obvious link to any group, and do not appear on any anti-terror watch list. What has brought them together on this one day to act in this way...