Former Met Police undercover detective Christian Plowman spent 16 years in the force - from trying to clean up the streets of Soho to posing as an addict in crack dens, infiltrating Eastern European organised crime gangs and buying guns with taxpayers' money. Christian shares hair-raising (and sometimes darkly funny) stories of his life undercover in conversation with regular Chiswick True Tales host Duncan Steer. Early tickets: £12