In "A and Others v National Blood Authority", Mr Justice Burton highlighted Dr Gunson's evidence, where he said in concluding part of his decision: "I have already referred to Dr Gunson's evidence, subject to the question of a confirmatory assay as to 'certainly early in 1990', in retrospect. Later in cross-examination, he said...I have now said three times - I think I did say to His Lordship yesterday - that in retrospect we should have done it a different way.'"