The world knows their names and pixelated photos of their faces were splashed on front pages all over the world.

The four teenage girls from Bethnal Green Academy who left Britain to join Isis three years ago, seduced by the idea of becoming a jihadist bride in Syria are all now feared to have died in the war zone.

Less well-known is a fifth girl, B, their friend, who was bundled by police off a British Airways plane as it prepared for take-off at a London airport in December 2014. The girl, then 15, was stopped after a last-minute tip-off minutes before the plane taxied down the runway.

B, it later emerged in a family court hearing held to decide her future, had been home-schooled