Code:

http://www.imdb.com/title/tt1220111/

The series begins in 2012 (just after the 2012 Summer Olympics), when London and some of the south east has been evacuated in the wake of a nuclear attack during the opening ceremony of the Games. The government has relocated to Manchester; Thames House has been decommissioned, and MI5 is forced to set up offices across the UK in an attempt to help the country avoid new attacks

Code:

http://safelinking.net/2y6lN6a