The gossip machine which would have been ripe at the time.
Speaking of which, I have a book entitled "The Essex Triangle" by David Thurlow. I quote from the Bamber section and capitals are my own:- "Police searched for the silencer for three days without finding it. Bamber's cousin, David Boutflour was in the house FOR THREE MINUTES before he found it in the gun cupboard. FORENSIC TESTS SHOWED BAMBI'S HAIR ON IT. But how? Police took two days to come and collect the silencer and on the way to the laboratory managed to lose a vital clue: A GREY HAIR on the silencer WHICH UNDOUBTEDLY BELONGED TO BAMBI"
I think you'll agree that he may have used a little licence here -much like some of what is said on form!!!!- but whilst I feel the urge to hail DB as the hero of the hour...........NOT, although it isn't impossible for a 27 year old to have the odd colourless hair, to find ONE out of a total of approximately 120,000, stuck to a silencer, would be more of a miracle than a coincidence. FURTHER, to have forensic tests PROVE it to be Sheila's BEFORE forensic tests were done has to be an even greater miracle. I guess its subsequent loss was of no moment if they already knew from whose head it had originated.