The role of the covert agent

There has been a lot of focus this year on government surveillance and the bulk collection of data about us, but as part of her guest-edited programme, Eliza Manningham-Buller wanted to give us an insight into the covert agents working within communities and the role they play in intelligence.

Our Home Affairs correspondent June Kelly interviewed a community informer, whose answers have been re-voiced by an actor to protect his identity.