Mark Christopher lured followers into his 'anti-establishment cult’ by promising to save them money. The movement quickly took a sinister turn.

Wanna get in touch? Email us at behaveyourself@bbc.co.uk.

Presenter: Rima Ahmed. Reporter: Lewis Adams. Written and produced by Luke de Costa. Researcher: Bethan Davies. Social Media: Fede Marilotti. Online Producer: Rachael Smith. Executive Producer: Luke Eldridge. Commissioning Editors: Gareth Hydes and Alistair Miskin.