Premise: Jon Pertwee . Pertwee also spent 18 years ( 1959 -- 1977 ) playing Chief petty officer Pertwee in The Navy Lark on BBC Radio . He later played the title character in the series Worzel Gummidge from 1979 to 1981 , and again from 1987 to 1989 .
Hypothesis: Jon Pertwee was in a series from the 20th century.
Label: ENTAILMENT