A Labour politician has called on TV duo Ant and Dec to ditch a sponsorship deal with payday loan company Wonga.Stella Creasy, who is MP for Walthamstow, has long campaigned for regulation of payday loan companies, and has called Wonga a "legal loan shark".In a letter to Ant and Dec she writes that, "it's clear these firms are profiting from the struggle to make ends meet that many of your viewers will face".Wonga, which charges up to 4,215% APR on its payday loans, has secured sponsorship rights ...