Fletcher, supposedly Dismantled a silencer at the Lab' on 12th September 1985, something which was an impossibility because there wasn't a silencer at the lab' on that occasion, or by that date..
The silencer (SJ/1, 22) had been returned to Essex police on 13th August 1985, and the other silencer (DRB/1, 22) was not submitted to the lab' until 20th September 1985. Exhibit DB/1 (23) which got sent to the Lab' on 30th August 1985, was the dried flake of blood which David Boutflour had scraped from the outside of the silencer (SJ/1, 22) prior to that silencer having been handed over to police and the provisional examination of it by Glynis Howard at the Lab' on the 13th August 1985..
What Howard knew was the true value of AK1, in a one silencer scenario - if there was only one silencer, which had had all these different exhibit references at one time or another, and different lab' item numbers at different times, Howard knew that the AK1 blood enzyme couldn't be allocated to Sheila Caffell, alone. Howard knew the secret significance of the silencers. John Hayward knew Howard's secret, because he (Hayward) was a party to the same secret..
Hayward and Fletcher, they were both different to Glynis Howard, different because she was committed to telling the truth, and saying it as it was, and is - "human blood" on the silencer (SJ/1, 22) August 1985, and "animal blood" on the silencer (DRB/1, 22) April 1986 - her findings capable of seriously undermining the expert opinions of both Hayward and Fletcher, where the former claimed the blood found in the silencer was unique to Sheila, and where the latter, based his expert opinion on the opinion of the former, by declaring that the only way that Sheila Caffell's blood could have got into the silencer, was if the silencer was fitted to the end of the guns barrel at the time she was shot and killed!
This in turn had the knock on effect of enabling the prosecution to "ambush" the defendants case, by gleefully declaring that Sheila couldn't have taken her own life, therefore, because when the police found her body that silencer with her unique blood inside it, wasn't still attached on to the end of the guns barrel, it had been removed and carried off to another part of the farmhouse and concealed in a cupboard, and allegedly not found or recovered by the police, but by the relatives later on...
Hayward, and Fletcher, knew Glynis Howard's secret...
That secret, will come back to haunt both of them, and all the others who took part in its concealment, as sure as night follows day, and death follows birth..