http://www.bbc.co.uk/iplayer/episode/b03d0zv9/The_Graham_Norton_Show_Series_14_Episode_1/
^ Harrison Ford and Benedict Cumberbatch on Graham Norton last ngiht (Warning also contains Jack Whitehall). Some brief Star Wars chat and tomfoolery from about 18 minutes in. Interesting that when Benedict is asked if he's gonna be in EpVIII he declines to answer. So it's fair to assume he's being considered for a role at least.