Derek Riddell

Derek Riddell (born 11 January 1967) is a Scottish television and theatre actor. He is best known for the portrayal of Richard Cawood in the BBC One television series ''Happy Valley''. He is also known for ''Gentleman Jack'', '' Industry'' and ''The Missing''. He has guest-starred in ''Doctor Who'', ''Ugly Betty'', ''Silent Witness'', ''Waterloo Road,'' and ''Shetland''. Provided by Wikipedia