Hutton Inquiry: The current witnesses

As this week's witnesses for the Hutton inquiry are named, BBC News Online looks at their backgrounds.

Pam Teare, Head of the Ministry of Defence press office
According to newspaper reports, Ms Teare confirmed to journalists from three newspapers that Dr Kelly was the unnamed official who the MoD thought was the source for BBC reporter Andrew Gilligan's report.

Jonathan Powell, Downing Street chief of staff
One of Tony Blair's right-hand officials. The inquiry has seen one memo from a civil servant about Dr Kelly's account of his meeting with Mr Gilligan, which it was suggested Mr Powell might want to show to the prime minister.

David Manning, Tony Blair's foreign policy adviser
Another key official at the heart of Number 10, Sir David was in the thick of the discussions about the lead-up to the war. Some of the government memos sent about how to deal with Dr Kelly were copied to him.

Alastair Campbell, Downing Street communications director
Sometimes called "the real deputy prime minister", Mr Campbell sent a barrage of complaints about BBC coverage of the weapons row. He broadened his attack when he appeared before MPs and on live television. According to Andrew Gilligan's report, Dr Kelly said it was Mr Campbell who was responsible for "sexing up" the September Iraq dossier.

Sir Kevin Tebbit, permanent secretary at the Ministry of Defence
The MoD's most senior civil servant advised that Dr Kelly should not be interviewed in public by the Foreign Affairs Committee of MPs, but his concerns were overruled by Defence Secretary Geoff Hoon.

Godric Smith, official spokesman for Tony Blair
One of the two men who give daily briefings to journalists behind closed doors, Mr Smith was involved in trying to rebut Andrew Gilligan's report.

Tom Kelly, official spokesman for Tony Blair
Again involved in denying the BBC story, Mr Kelly apologised earlier this month for suggesting the dead scientist was a "Walter Mitty" character. Those remarks, however, are likely to fall outside the inquiry's remit.

Donald Anderson, chairman of the Commons Foreign Affairs Committee
The Labour MP chaired the session where Dr Kelly was questioned publicly about his contacts with Mr Gilligan and other journalists. That hearing saw one MP suggest the scientist was "chaff" who had been thrown up as a diversion and made a "fall guy".

Nick Rufford, Sunday Times journalist
The reporter has described Dr Kelly as a friend and believes he had the last interview with the scientist. He also quoted Dr Kelly in an article in April about the capture of an Iraqi scientist - which led to Dr Kelly being told he should have approved the briefing with the Foreign Office press office.

James Blitz, Financial Times journalist
Mr Blitz was one of the journalists who named Dr Kelly as the possible source for Andrew Gilligan's report after the MoD said an unnamed official had come forward.

Richard Norton-Taylor, Guardian journalist
The reporter has said the MoD press office confirmed Dr Kelly was the suspected source of the BBC's controversial story after he put three names to it. The day after Mr Gilligan's report, he quoted well-placed sources saying British intelligence sources had expressed fury at Downing Street's behaviour.

Tom Baldwin, Times journalist
Mr Baldwin wrote an article about BBC insiders saying their source was a military expert now working inside Iraq. Senior MoD officials said this article gave "further hints" about the source's identity, which they already suspected.

Lee Hughes, Hutton inquiry secretariat
Mr Hughes is a senior civil servant at the Department for Constitutional Affairs and is secretary to the inquiry.