Elisabeth Sladen, Thomas Knight and Daniel Anthony will all be at Oxford Street's branch of Borders tomorrow afternoon to take part in a signing of The Sarah Jane Adventures merchandise. For those of you who don't know, all three of them star in The Sarah Jane Adventures. Elisabeth Sladen plays Sarah Jane Smith, Thomas Knight plays Luke Smith and Daniel Anthony plays Clyde Langer. The signing will start at 12pm and end at 4pm meaning they will be there for four hours. More details can be found here on the official website for Borders and a further reminder about the signing will be posted tomorrow morning.