After about 15 minutes of searching for a tardis perler bead pattern, I finally found this Its one of the best one board tardis patterns around. (its great but be ready to not have a lot of blues once your done.
As I'm having a row of Pokemon posts here is an easy pattern sheet for kids bead works. These sprites are from the Pokemon Elite 2000 site. They are selected from the Diamond/Perl Pokemon icon sprites.