Louis Theroux - journalist behind the fascinating Weird Weekends series and last year’s My Scientology Movie - is returning to BBC two for a pair of documentaries, expected to air later this year.

The first in the two-part series will focus on alcohol addiction, Theroux having spent time with patients of alcoholism at King’s College Hospital.

The second - given the working title Brain Injury - will look at the issues facing the one million Brits living with long-term brain injuries.

Adam Barker, BBC Two Channel Editor, said: “BBC Two is delighted to welcome Louis Theroux back to the channel with a set of films covering British subjects with his usual penetrating documentary gaze and commitment to unpicking complex human dilemmas with highly sophisticated filmmaking.”

Later this year, Theroux will release his second documentary on Jimmy Saville for the BBC. Previously, the filmmaker made When Louis Met Jimmy, a documentary that showed a darker side to the presenter but failed to uncover any of the sexual assault claims that came to light in 2012.