To mark the 200th anniversary of the birth of Charles Dickens, a select group of his family and most ardent admirers from the worlds of literature and entertainment, including Joanna Lumley and Simon Callow, gathered in Highgate Cemetery, burial place of many of the Dickens family, to hear readings from his work introduced by his great-great-grandson Mark Dickens. Here, HiBROW curator Gary Kemp talks to Joanna Lumley about this special event and the legacy of Dickens.