Luke Bailey remembers the first time he died. He had woken from one of a number of operations he has had in treatment for spina bifida, to learn from his mother at his bedside that the surgeons had spent that last two hours trying to bring him back.
A few years later, in 2015, he faced death again when a basketball injury caused him to develop gangrene in his groin. His condition became so dire, he says, that he came within days of the grave.