His other television roles include Drop the Dead Donkey (1990–1998), All the Small Things (2009), Waterloo Road (2014–2015), and In the Club (2014–2016).
It was in the roles of associate editor and office lothario and gambling addict, Dave Charnley, in the sitcom Drop the Dead Donkey - another Hat Trick show - and of Detective Superintendent Tony Clark in the thriller Between the Lines (1992–94), that he made his greatest impact on the viewing public.
He played Major Steve Arnold, the American interrogator, in Taking Sides at the Yvonne Arnaud Theatre in 2003.
He also appeared in episodes of Midsomer Murders and Lewis - in the former, appearing alongside Drop the Dead Donkey co-star Jeff Rawle; and in the latter, again playing a gambling addict alongside Haydn Gwynne, another star of Drop the Dead Donkey - and played Doug Anderson in an episode of Death in Paradise in 2013.
The winning play, written by Kate Betts, was called On the Third Day and opened at the New Ambassadors Theatre in London in June 2006.
After obtaining a collection of original Hancock's Half Hour radio scripts and realising that some of the corresponding recordings no longer existed, he conceived and subsequently co-produced The Missing Hancocks, a series of re-creations of selected wiped episodes for BBC Radio 4, which debuted in October 2014.
Pearson has acted in several BBC Radio Dramas including the black comedy series Vent as comatose writer Ben Smith, adaptations of the Martin Beck novels playing Beck's sidekick Detective Lennart Kollberg, and House of Ghosts: A Case for Inspector Morse where he played the late Colin Dexter's iconic fictional detective Inspector Morse.