- The Oracle of Delphi (released November 2006) Plato
- Innocence (released September 2006) Kaled Officer
- Guilt (released December 2006) Thal Saboteur/Castan/Computer Voice
- The Sound of Fear (released February 2009) Mohanalee
- Land of Wonder (released March 2009) The White Rabbit
- The Two Irises (released April 2009) Barry
- Iris Wildthyme and the Claws of Santa (released November 2009) Alfredo
Handcock is also credited as an extra on miscellaneous Big Finish audio dramas.