David Ryall David RyallNow a well known actor on stage, radio and TV there is a link below which lists most of his TV appearances but misses out for me the most important role in an audio production of a Doctor Who Episode, Phantasmagoria - due for release in September, in which he appeared alongside Mark Gatiss (League of Gentlemen fame) who also wrote the episode.
I quote from the Beeb " The cast includes one of Britain's finest character actors, David Ryall as Sir Nikolas Valentine" (http://www.bbc.co.uk/cult/doctorwho/features/bigfinish2.shtml )
For a much longer list of credits visit http://uk.imdb.com/Name?Ryall,+David