The case for Dr Kelly walking up to Harrowdown Hill and into the wood would be bolstered if there was evidence of him being sighted after he had been in conversation with Ruth Absalom. In a comment on the last post but one from me (about Paul Weaving) Frank had pointed out that there had been no less than six witnesses that he was aware of who, during the course of the afternoon and evening of the 17th July, might have been expected to have spotted Dr Kelly ... if not all at least some of them. These were two farmers, an employee of one of them, a dog walker, a horse rider and a badger watcher. None of these did. It seems that the alleged sighting of David Kelly by Mr Weaving was before Dr Kelly met Ms Absalom.
It has been stated that there was a thorough investigation of possible witnesses to the routes that Dr Kelly would have taken. Part of number 46 in the schedule of responses to issues raised deals with this http://www.attorneygeneral.gov.uk/Publications/Documents/Schedule%20of%20responses%20to%20issues%20raised.pdf
This is the relevant two paragraphs in the response:
In the days following the discovery of Dr Kelly's body a house-to-house operation was conducted in Southmoor, Longworth and the routes between the two villages. This included any "premise which overlooked the possible routes taken". In total 167 premises were identified and visited. This was a large operation and took some weeks to complete.
Whatever viewpoint one takes the police failed to muster a single witness to say they had seen Dr Kelly. There is thus no evidence that he had voluntarily entered the wood where he was found.