"We came to Britain on vacation," said Stan, "but it turned out to be the hardest work we've ever had in our lives." Comedy historian Glenn Mitchell examines the impact made by the comedy duo Stan Laurel and Oliver Hardy during their various tours of Europe between 1932 and 1954. With contributions from show business publicist Laurie Bellew , comedian Harry Worth and members of the public who met them. Producer Stephen Garner Repeated on Sunday at 12.15am See Paul Merton 's Silent Clowns at 9.30pm on BBC4