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Can you get autographs with stars at TV studio recording?

I’ve got a free ticket to be in the audience at a show being recorded at BBC Elstree on Monday. I just wanted to ask, for those who have done it before, is it possible to get pictures and autographs with the stars after the show (like at a theatre stage door)? Is there an area you can do that at Elstree as they leave, or is this just not at all possible? Thanks!