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Old Mother Riley's Circus is a 1941 British comedy film directed by Thomas Bentley and starring Arthur Lucan, Kitty McShane and John Longden. Old Mother Riley takes over a struggling circus and makes a huge success of it. The trade ad poster proclaims, "A LAUGH - A YELL - A ROAR - A LUCANQUAKE!" The film was made at the Rock Studios in Elstree by British National Films. It was the final film by Bentley, who had been a leading British director during the silent era and early sound era.