Good policing doesn't necessarily mean doing everything by the book. But as the business of crime in London turns to favour the Albanians and Turks, how does a "good" policeman survive?

An illegal immigrant from Albania infiltrates the lives of a group of Londoners with devastating consequences.

Former gang boss turned respected businessman, Richie Beckett pledge money to help rebuild a pier. But Richie's mind is deteriorating, and the other outfit he runs with his sons is under attack by a vicious rival gang.

Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.