By Henry Saker-Clark, PA Deputy Business Editor & Lawrence Matheson H&M has appointed a new boss as the fashion giant’s annual profits failed to meet expectations. The Swedish retail chain announced that Helena Helmersson is stepping down as CEO. Helmersson, who held the position for four years, expressed “mixed feelings” about her departure and admitted the role was “very demanding at times”. Daniel Erver, who has been with the group for nearly 18 years in various roles, will replace her. Karl-Johan Persson, chair of the H&M group, thanked Helena for her valuable contributions during a challe…