"The Bells of Saint John" - Prequel to be released

We're getting used to prequels now - in fact, they're to be expected - and Series 7B doesn't disappoint as the BBC red button schedule has listed a prequel to "The Bells of Saint John".

The prequel will be available via the BBC red button or channel 301 on Freeview from 5.15pm next Saturday (23 March).  The description reads:

'The Doctor takes a break on Earth, despondent that he can't find Clara'.

No doubt this will also be available online.