An inquest I believe would operate independently of any military or MOD investigation. That would be conducted by a British Civilian coroner. The set guidelines that lead to an inquest are here.
As Ive been lead to believe, the cause of the accident has already been identified and rectified. All the restrictions on gunnery have now been lifted apparently. The inquest is purely to discover how the crewmen died, and there might be circumstances that might impede the speed of that occurring, without going into details.
Inquest procedures do work, they just tend to take their own sweet time over it. Accident investigations usually occur at a somewhat brisker pace, or such is my impression.
Edited by Stuart Galbraith, 08 January 2018 - 0259 AM.