Graham Duff played a waiter in the Doctor Who television story Deep Breath, voiced Mr Baggit in the Doctor Who Unbound audio story Exile and wrote the Big Finish Doctor Who audio story Faith Stealer. He also contributed to the charity reference book Behind the Sofa: Celebrity Memories of Doctor Who.
Duff wrote and co-starred in the scifi-comedy radio series Nebulous, a production which also included Who alumni Mark Gatiss, Nicholas Briggs, Paul Putner, Rosie Cavaliero and Graham Crowden. Guest stars included David Warner, Peter Davison, and Kate O'Mara.
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