Briggs voiced the Daleks in a charity theatre production of The Daleks' Master Plan and briefly appeared on stage playing a regenerated Doctor.
Briggs also directed the BBC Radio 4 science fiction comedy Nebulous, written by Graham Duff and starring Mark Gatiss.
Outside the realm of science fiction, Briggs has appeared on stage at Nottingham's Theatre Royal, including a run as Sherlock Holmes in Holmes and the Ripper by Brian Clemens. He also appeared in the film Adulthood, written and directed by fellow Doctor Who actor Noel Clarke. As of 30 January 2010, Briggs is currently presenting the 7th Dimension on BBC Radio 4 Extra.
In 2010 he starred in Doctor Who Live as Winston Churchill.
Nick Briggs & Rob Sherman signed Autograph Doctor Who Daleks
He is the only actor to play both the "Doctor Who" character the Doctor and supply the voices of his greatest enemy, the Daleks. He played the former in numerous Audio Visuals audio dramas as well as the Big Finish audio drama Exile. He also played a man named Gideon Crane who mistakenly believed himself to be the Doctor in the Big Finish audio drama Minuet in Hell. He regularly supplies the voices of the Daleks in numerous audio dramas and episodes of "Doctor Who" (2005).
Appeared in Torchwood: Children of Earth