From the "What Else Is New?" Department:

US Authority Accused of Ignoring Allies in Iraq
CPA Was Dysfunctional, says British Official
UK 'complicit' in failing to prepare postwar plan

The US-led administration set up to run Iraq following the invasion in 2003 was a "dysfunctional organisation" which almost completely ignored the British, according to its director of operations.

Andrew Bearpark, probably the Coalition Provisional Authority's central British figure, also revealed that when he asked for details of the plan to restore the Iraqi power supplies, he was given a one-page piece of paper with a list of a dozen Iraqi power stations and their potential output, amounting to what he describes as "a wish list". "That was the CPA plan", he said in an interview with the Guardian.

He described Britain as "being complicit in Iraq's current position as a failed state due to its the failure to prepare a postwar plan."

[snip]

Mr. Bearpark said British attempts to be signatories to the formation of the CPA as a joint occupying power under the Geneva convention were brushed aside by the Americans. "Throughout its entire existence, CPA was a US government department and no agreement was ever signed between the British and the Americans, because the Americans refused even to consider it."

He insists there was a window of opportunity in 2003, following the invasion in April, when the coalition had the support of the Iraqi people, but by the winter "we were losing them since we were unable to control security". By January, the people realised the situation would not improve.