Conversation so far:
How old was Harold Shipman when Harold Shipman was arrested?
CANNOTANSWER.
How long was the trial?
after six days of deliberation, the jury found Shipman guilty.
Did Shipman have a statement?
Shipman consistently denied his guilt.

Question: What was his reason for denying guilt?
Self-contained rewrite: What was Harold Shipman's reason for denying guilt?