An enhanced CRB check means nothing more than the person has not, at the moment it was issued, been convicted of anything or cautioned or anything like that.
Let me be very clear. It means nothing more than that.
Never ever ever say oh well, this person must be ok, they have an enhanced CRB. Exercise good judgement.
His actions are inappropriate. He needs to be told. If he chooses to be upset or angered by this, tough. That's the price he pays for behaving so inappropriately.
He may be nothing more than really fatherly and think she's very cute and adore her in a fatherly way.
That is neither here nor there.
And your daughter must not think that to be picked up and kissed etc is something that is perfectly ok for someone at the school gate (supermarket, friend's house, swimming baths, etc, etc) to do. you don't grab someone's child at the school gate and kiss them on the lips and half way up their legs, for crying out loud.
You have to tell him to pack it in. Step in. Don't let him do it.
It doesn't matter what his motivations are. Most innocent interpretation - He may be all coochy coochy coo what a lovely kid I'm so broody, but so what? What matters are his actions, the way it has the potential to make your daughter feel and the risk of her feeling like it is appropriate for an adult to behave in such a way, which has the potential to make her vulnerable.