Please, don't even think about comparing FOX to BBC. I think that FOX officially put the "News" in quotes, to reflect their journalistic idealogy.
The BBC on the other hand is one of the least biased news sources available. Though the temptation to become an anti-FOX (like FOX, but with the opposite viewpoint) is always there, they stick to the facts and make sure you get the whole story. You're comapring one of the best with one of the worst.
Coalition Lies
-Jessica Lynch
-Saddam's Capture
-WMD
-Bombing of a civilian target early during the war (debunked by Robert Fisk)
Those are just the ones which I can think of without trying too hard, and also only the ones which were exposed. WHo knows how many countless others 1) I'm forgetting and b)were never found out. But even with those four, is it not reasonable to think that the Coalition will lie whenever necessary to cover their asses and make themselves look good.