Ryanair deputy chief executive Howard Millar riled Aer Lingus chief executive Christoph Mueller at an investor conference in London yesterday. Miller, who was representing his airline’s 30% stake in Aer Lingus, again asked whether the internal report, commissioned from Deloitte and McCann FitzGerald into why the airline’s leave-and-return scheme resulted in the need to settle a €30m tax bill, would be published. When Mueller answered that the report wouldn't be made available, Millar accused Aer Lingus of a cover-up. He then asked for assurances that Aer Lingus wouldn't inject any more money into the pension scheme, and for it to pay a €100m-plus dividend to shareholders. Millar was reiterating the same demands made by Ryanair chief executive Michael O'Leary, who, speaking at the airline's annual general meeting in Dublin yesterday, said that the airline could call for an extraordinary general meeting of Aer Lingus in order to push for publication of the leave-and-return report.