If this girl had a fake driving license that he'd asked to see, I'm sure that would have come up in the reports. Faking documents being more in the "criminal gang" than "young teenager" area.
But all that is irrelevant, given that the law does not require men in this situation to demand ID.
It doesn't fucking matter 'what she was expecting' because she was a child.
It sort of does, if she went out deliberately intending to deceive a man into thinking she was over 16 and willing to have sex. I'm not saying she did, I don't know enough about the case, but given that it is an essential element of the offence that the prosecution must prove that he knew or should have believed her to be under age, it matters quite a lot.
Just to make it clear, I absolutely agree that this man is a disgusting piece of utter shit. I absolutely agree that the girl needed to be protected. But the fact remains that a jury who heard and saw all the evidence, and in particular had the chance of seeing the defendant and the witnesses give evidence, were not convinced beyond reasonable doubt that he was guilty of the offence charged. And I don't think that, on the basis of brief newspaper reports, any of us can seriously claim to know better than they did.