Did Bradley know it was Stacey?

Note when Braders says: STACEY RUN!

Does that mean he knew and was protecting her?

Dunno doubt we ever will know, Charlie Clements himself didnt know who it was cause he didnt know when they interviewed him on aftermath.

Yeah I think it does. I think that the actor didn't know exactly what it meant but I think that the writers meant it to be that. If see before when they were packing Stacey went to Bradley, I'm not telling the truth or something like that then the cameras moved away.

Yes, Sharon Marshall confirmed that Stacey told him in that unseen bit on her twitter.