Matt Smith on 'vast and epic' new Doctor Who

Doctor Who Actor Matt Smith promised fans they "will not be disappointed" by the new series storyline.

"I read it and I clapped at the end. I think it's hilarious, it's epic and it's vast," he said at a Doctor Who series launch.

The first story of Doctor Who's 2013 run, The Bells of Saint John, will be screened on Easter Saturday, 30 March.

Described by the writer Stephen Moffat as a "proper London thriller", it sees the Doctor and new companion Clara (Jenna-Louise Coleman) battling an evil entity in the world's wifi networks.