Thanks goodbyestranger. I'm really very proud of him. He has literally turned his life around in the last 2 years.
He made an open application and he was allocated a college which, I think, is more likely to be sympathetic to his situation than some would be which is helpful. He has been offered an interview for the college to which he was allocated.
It's good to know that his GCSEs will be looked at in that way and they have likely already been considered.
He did some interview practice at school yesterday with the head of history and the feed back was positive, just one tip about not covering his mouth with his hand which I'm sure he can work on.
What will be will be, to be in a position of being shortlisted is simply remarkable from where he was 2 years ago. I'm thinking his HAT must have been OK as I don't think he would have been shortlisted with his GCSEs if it wasn't. But what do I know?
Thanks for responding, it's good to have insight from someone who's been through the process, and from memory you have been through it several times with your DC!