Business;Faith value;Mr Clean;Ian King wants to transform the way the world's third-biggest defence company does business;On June 27th last year, just six weeks after Mike Turner, the chief executive of BAE Systems,had been detained on arrival in America in connection with corruption allegations, Ian King was announced as his successor.Mr Turner and another of the firm's directors were not held for long, and many felt that the Department of Justice,which seized their laptops and BlackBerrys, had acted heavy-handedly. But the incident,which stemmed from a long-running investigation into claims that BAE had lubricated the £43 billion ($70 billion) “al-Yamamah” arms deal with Saudi Arabia with bribes to government officials and members of the royal family,was yet another embarrassment for the world's third-biggest defence company.In some ways Mr King's appointment was a surprise.Dick Olver, BAE's chairman since 2004, has been on a mission to restore the reputation of a firmthat has all too often found itself at the centre of corruption allegations.In 2007 he took the extraordinary step of asking a former Lord Chief Justice,Lord Woolf, to lead an independent inquiry into BAE's ethical standards.After he pushed Mr Turner into early retirement, it was assumed thatMr Olver would make a clean break with the past by choosing an outsider to carry forward his crusade.