Anne Robinson, Matt Allwright and Anita Rani take on the big names and businesses that are letting viewers down, with investigations and topical reports. On Rogue Traders, Matt meets the mobile mechanic who could leave clients with a bill for hundreds of pounds but a car that is impossible to drive. Plus, how will the celebrity reporter fare in the consumer quiz? Viewers can comment on all the stories, and send in their own, at watchdog.bbc.co.uk.