Once a Jolly Swagman is a 1949 British film starring Dirk Bogarde, Bonar Colleano, Bill Owen and Sid James. It is centred around the sport of speedway racing, which was at its peak of popularity at the time. The film is based on the 1946 novel by Montagu Slater.[1]
The title of the film refers to the first line of the song Waltzing Matilda.