Veteran actor Bernard Cribbins will make a guest appearance in the fourth season of Doctor Who.

"This is the icing on the cake, a wonderful addition to an already phenomenal cast," producer Phil Collinson told Doctor Who Magazine. "It's a wonderful cameo, which kept the entire cast and crew entertained."

Best known for narrating The Wombles, 78-year-old Cribbins is already known to fans of Doctor Who through his appearance as a bumbling policeman in the 1966 film Daleks: Invasion Earth 2150 AD.