A knife, assumed to belong to David Kelly, was found close to where his body lay.
We don't know if the knife found belonged to Dr. Kelly or not. His wife wasn't shown the knife, only a photocopy.
One glaring omission in the forensic testing is that, so far as I can find, no tests were done on the knife found at Harrowdown Hill to determine whether or not it was used to incise David Kelly's left wrist.
It's possible that the still secret report by forensic biologist, Roy Green, addresses this question. Until that's released the question of whether or not the knife found beside David Kelly's body was used or simply planted beside the body remains an open question.