Marketing Week editor Russell Parsons speaks to David Wheldon, CMO of RBS Group and president of the World Federation of Advertisers. The "accidental careerist" talks about his 35 years in marketing in which he has held executive positions agency-side and at global brands including Coca-Cola, Vodafone, Barclays and now RBS where in addition to overseeing brand strategy for some of the UK’s biggest financial services brands, he is also on its executive committee. In a candid interview, Wheldon discusses: The challenge of rebuilding RBS' brand repuation Why marketers shoudn't get distracted by digital Tackling a "discombulating" corporate crisis at Barclays Why marketers would benefit from working at agencies His career highs and lows The biggest challenges marketers will face in the future