Derek Fowlds

 voiced Claude in AUDIO: The Elixir of Doom.

He is best known for his long role as crotchery police Sergeant Oscar Blaketon, later proprietor of Aidensfield Post Office and General Stores, later councillor, private investigator, and landlord of the Aidensfield Arms pub, in ITV period police drama Heartbeat, which he appeared in for eighteen years, and all eighteen series, from 1992 to 2010.