Fuck-ugly BBC Radio 4 journalist, he was effectively crucified for 'telling the truth' about how the intelligence services were politically co-opted into justifying the invasion of Iraq. However, while he was undoubtedly correct that the government had 'sexed-up' information about weapons of mass destruction, his undoing was the result of Gilligan 'sexing-up' information from his sources, thus cleverly completely discrediting himself.
Well, I said "effectively"...
The enquiry confirmed that he told a Select Committee MP the name of another journalist colleague's source. Some might suggest that selling out a colleague's source further discredited his, err, "journalistic integrity". Managing to have two different versions of the same key meeting on his PDA was another startling own-goal.