'The story behind the making of Mary Poppins is to be told in a Hollywood film starring Emma Thompson as Pamela Travers, the author who signed away the rights to Walt Disney only to regret it. Thompson is in negotiations to play Travers. The new film is to be titled "Saving Mr Banks", a reference to the Disney scriptwriters' attempts to write the character out of the story as they drifted from Travers' original plot. ' Anita Singh.