Advertising is famously populated with characters. The cliche is that of the ruthless, dashing fellow, characterised by Don Draper in the TV show Mad Men. There are the Machiavellian, the tortured and insecure, the banal and phantasmagoric; the attention seekers and poseurs. And then there are folk like Roger Dickinson …

Roseanne Liang directs her first feature film—based on her own life and starring two kung-fu movie veterans. No pressure, says Florence Noble.