Of course they havn't said that outright but effectively, that's what they have said. Consider the evidence:
First, we are told that Iraq has WoMD (yeah, I know ... stop laughing ... you have to bear with this)
Next, they give it the real hard-sell and say that they are an imminent threat ("ooh ... be very scared ... oh, and let us take whatever action we want"). We're told that they could deploy WoMD in just 15 minutes !! (our wonderful "military intelligence" ... surely an oxymoron?)
After that, we're told that they never had WoMD at all but that they would find evidence of WoMD programmes.
Think about it ... this means that when attacked, the Iraqi scientists would first need to develop the WoMD very quickly indeed so that they could then be deployed in 15 minutes !! This must make then far more advanced than any scientists we have, no?!
Another explanation of course is that politicians are dishonest and deceptive and tell so many lies that when you put things together they don't make sense.
How can Mr Blair claim that they would only expect to find evidence of WoMD programmes and at the same time claim that the 15 minute deployment intelligence wasn't a pile of rubbish?