If you live in the UK, then mark Saturday 31 March as a date in your calendar, for that's the day when the third series of Doctor Who returns to BBC ONE. With Freema Agyeman playing David Tennant's new assistant Martha Jones, and some interesting rumours about John Simms from Life on Mars playing The Master, the revived series is facing its toughest test yet; to get past the all-important third season and survive any of the rumoured changes in the lead role.














