Just as one woman in Britain steps up to the top job of prime minister, the rest of us have been firmly put back in our place with the revelation that females apparently have a "circular" approach to ambition and actively avoid high promotion. According to Kevin Roberts, chairman of advertising agency Saatchi and Saatchi, the lack of women in leadership roles is not "a problem" and though only 11.5 per cent of creative directors in his industry are female, the debate over gender equality in the boardrooms he knows is "over".