Dr Ian Evett would have also been contaminated by confirmation bias given he sat through Barry George’s first trial and his notes were picked up on in 2006 by the CCRC.
And what more evidence of proof of contamination of confirmation bias is there than this:
“The scientist who helped convict Barry George of the murder of Jill Dando said yesterday that "with hindsight" he would have testified differently at George's trial, since at that time he was unaware of the likely consequence of his evidence.
Robin Keeley worked for the Forensic Science Service (FSS) for more than 30 years and pioneered the identifying of firearms discharge residue.
Yesterday he acknowledged to the appeal court that, by itself, a particle of residue he had identified in the pocket of George's coat, when he was arrested almost a year after the TV presenter was shot, in no way linked George to her killing.
https://www.theguardian.com/uk/2007/nov/07/ukcrime.jilldando