File photo dated 21/05/07 of Joan Rivers who will be among a host of high-profile acts performing at the the Prince’s Trust comedy gala. PRESS ASSOCIATION Photo. Picture date: Friday November 2, 2012. The comedy extravaganza, taking place at the Royal Albert Hall on November 28, will raise funds for the youth charity’s work with disadvantaged young people across the UK. See PA story ROYAL Comedy. Photo credit should read: Yui Mok/PA Wire