Noel Clarke has since confirmed that he's not going to be in it. He seemed fairly set on not playing Mickey again, post-JE; from the interview I got the impression he came back because he wanted to give the character some closure/show he'd grown and changed for the better, then leave off with him for good.

Oh, good for him! I would have loved to see him show up again, whether it be Who, TW, or SJA, but it's nice to see that he's moving on. And I think I remember him being in sort of promo shot for a new show, so I'm happy he's got something new to work on.

Thanks!