As the nation's biggest consumer series continues live from Salford, Steph McGovern, Matt Allwright and Nikki Fox hold more big names to account, tonight exposing the major retailers caught on camera breaking the law by selling knives to a 16-year-old. Also, how an agency trusted with our personal details has managed to lose thousands of people's data, and reformed fraudster King Con unravels a mysterious and growing scam that's bumping up an essential cost for everyone who drives. Plus, in Rogue Traders, Matt's on the trail of a firm of locksmiths with an unorthodox and very expensive approach to fixing broken locks.

Steph McGovern, Matt Allwright and Nikki Fox return with the latest consumer investigations, including surprising lab results on the freshness of supermarket chicken.