Sir Christopher Meyer in The Guardian

"Britain's former ambassador to Washington, Sir Christopher Meyer, delivers a damaging critique of Tony Blair's approach to the war in Iraq in an interview in the Guardian today.

[snip]

Sir Christopher gave the interview to mark the publication of DC Confidential, the first account by an insider of the decision-making that led to war, to be serialised in the Guardian from Monday.

[snip]

He reveals that the Foreign Office, which raised doubts about the wisdom of the war, had been even more marginalised by Downing Street than had until now been realised. He said he dealt almost exclusively with Downing Street in the 18 months before the war and could recall few, if any, phone calls with the Foreign Office in that time." (link)

and in another article:

"As British ambassador to Washington from 1997 to February 2003, he was the man who introduced a wary Tony Blair to Mr Bush. He led the way towards the unexpected mating of New Labour with the American right, a relationship that eventually took Britain to war in Iraq.

He did not just arrange meetings between the two leaders but spoke up at them. He was a confidant of both sides, with regular private meetings with everyone in the White House from vice-president Dick Cheney and his aide Lewis "Scooter" Libby, now being prosecuted in Washington, to the president himself."

[snip]

It is not a book that will make comfortable reading for Mr Blair and those who served him. He is the first of the insiders involved in the planning of the war to publish a first-hand account. He is not flattering about the way the prime minister, his ministers and advisers went about their task.

Sir Christopher, who had access not only to all the Bush-Blair phone exchanges but position papers written by Mr Blair, was in a position to know. (link)

hmmm - it might be some interesting reading - altho he was a war-supporter.