Shared Intelligence?

In Australia, shouts from the aisles are being heard about the existence of a prewar British Intelligence conclusion that invasion of Iraq would increase, rather than decrease, terrorist attacks in the West. Surely the Brits made this conclusion known to its U.S. allies. Will someone in power here be asked what became of that conclusion: due consideration followed by deliberation followed by soundly made rejection; immediate out-of-hand discard; agreement, but coverup in order not to obstruct the march to war? Even if questions are asked, will the answer ever be known, will it matter, will we care?