Ronald Charles Douglas Hanmer AM was a British conductor, composer and arranger of light music, who spent his latter years in Australia. He was best known for his themes to the Adventures of P.C. 49 and Blue Hills, and is also noted for his large oeuvre of light orchestral and brass band compositions, as well as his arrangements of popular stage musicals. During the 1950s and 1960s he directed his own Latin-American percussion ensemble called The Marimberos on BBC radio and was, for a while, conductor of the Sydney Thompson Old-Time Orchestra for the programme Take Your Partners.