McGivern played the voice role of Ford Prefect in the original BBC radio series of Hitchhiker's Guide to the Galaxy. Alan Bell (the director of the TV series of the same name) decided not to subsequently cast McGivern in the same role in TV version of the series, claiming he looked 'too ordinary'. David Dixon was cast in the role instead.
Returned for the new "Tertiary Phase" episodes of "The Hitch Hiker's Guide To The Galaxy" BBC4 radio series, adapted from the late Douglas Adams' books 3-5 of the "trilogy". Phase 4 ("Quandary") is slated for 2005, with phase 5 ("Quintessential") to follow. [September 2004]