Watchdog is back on air this week for an eight week run, with a new look and new regular items.Matt Allwright, Sophie Raworth, Michelle Akerley and Nikki Fox who were all involved with the last series and are returning, and joining the team is BBC business reporter Steph McGovern.The news series be investigating and exposing large companies mistreating consumers as before and Rogue Traders returns as an integral part of the show with Matt tracking down and confronting the rogues. This week the team reveal the dirty conditions of your weekly shop. Also the family car catching fire, how to stop nuisance calls and a Rogue Trader is confronted for pressure selling to the over 70s.Matt and Sophie present from the new Watchdog Dome outside New Broadcasting House. Michelle and Nikki will report on our consumer investigations and Steph leads a new strand Team Watchdog, supported by consumers who have signed up to take part in experiments each week to investigate if we're all getting value for money.