Seems the bookies have had to freeze bets after quite a lot took to chancing on Death In Paradise's Kris Marshall
http://www.digitalspy.com/tv/doctor-who/news/a822622/doctor-who-kris-marshall-next-doctor-who-bookmakers-close-betting/
http://www.digitalspy.com/tv/doctor-who/news/a822622/doctor-who-kris-marshall-next-doctor-who-bookmakers-close-betting/