Louis Theroux’s first theatrical feature documentary, My Scientology Movie, is to launch at this year’s London Film Festival.

The documentary is backed by BBC Films and BBC Worldwide and will premiere on 14 October.

The film is produced by Oscar-winner Simon Chinn through his indie Red Box Films, which is a sister company to Channel 4-backed indie Lightbox. Chinn previously produced Man on Wire and Searching for Sugar Man. It is directed by John Dower.

The film will follow Theroux as he explores the Church of Scientology and attempt to enter the Church’s headquarters in Los Angeles. Inspired by the Church’s use of filming techniques, and aided by ex-members of the organisation, it will dramatise incidents experienced by those who have left the religion.

“I find that the most shocking behaviour is motivated by very relatable human impulses,” said Theroux.

Earlier this year, Theroux revealed that the Church of Scientology was also making its own movie about him.

My Scientology Movie is likely to air on the BBC following its theatrical release. Although it’s not clear which channel it will launch on, the doc is exec produced by BBC1 controller Charlotte Moore.

Other execs include BBC Worldwide’s director of factual Mark Reynolds, BBC Films head Christine Langan, BBCW’s director of co-production funding Stephen McDonogh and BBC Films commissioning executive Joe Oppenheimer.