Turing is generally believed to have been committed suicide following his conviction and chemical castration. However, the original inquest into his death was perfunctory and inadequate. Although it is said that he died from eating an apple laced with cyanide, the allegedly fatal apple was never tested for cyanide. Moreover, he was in an upbeat mood at the time of his death and making plans for the future - not the typical profile of a person who takes their own life.
A new inquiry is long overdue, even if only to dispel any doubts about the true cause of his death - including speculation that he was murdered by the security services.
Although there is no evidence that Turing was killed by state agents, the fact that this possibility has never been investigated is a major failing. Even if the security services did not kill him, did they pressure him and did this pressure contribute to his suicide?