Where are you reading an autopsy report? Is it possible you quoting reports on a report based on third hand + translated info?
To me, wounds on the back of Miller's head were deep slash cuts and looked consistent with a hoe, not a blunt object.
The British Ambassador is tasked with trade relations, nothing more, nothing less. It would be a diplomatic row if he were to voice what we are all thinking. Unless the families start agitating independent DNA tests, and the British Coroner also took samples from the bodies upon arrival in GB, looks as if this will stick.