John Sessions

John Sessions (born John Gibb Marshall on 11 January 1953) is a RADA trained actor, comedian, and sometimes panelist on British quiz comedies. He is particularly well known, at least in Britain, as one of the original regular panelists on Who's Line Is It Anyway?, and, more recently, as a recurring guest on QI.

As of 2010, he has so far lent only his voice to Doctor Who. Alongside Colin Baker, he was several different characters — but notably Mozart — in My Own Private Wolfgang. Later, he starred opposite Peter Davison in Castle of Fear as Roland of Brittany. In the same play, he also notably played the Fifth Doctor in the piece's play-within-a-play.