"Fifty Shades of Grey" film is hit with advertisers

"Fifty Shades of Grey", the novel about a risque relationship between a young woman and an older man, sold in record numbers around the world and made the author E L James a multi-millionaire. The film of the book is due out next month, but already all the advertising opportunities around the screen version have sold out. We talked to the boss of the cinema advertising firm Pearl and Dean, Kathryn Jacob, about just why brands were so keen to be part of the phenomenon that is Fifty Shades.