IMPERIAL Tobacco yesterday named Alison Cooper as its next chief executive, making her the youngest woman to run a FTSE 100 company.<br /><br />She will take over from current chief executive Gareth Davies, who is retiring after 37 years at the firm. <br /><br />The promotion for Cooper, 43, means that there are now five female chief executives at UK blue-chips.<br /><br />The other women at the helm of FTSE 100 companies include: (clockwise from top left) three Americans, Angela Ahrendts of fashion group Burberry, Cynthia Carroll at miner Anglo American, and Dame Marjorie Scardino of publisher Pearson,&nbsp; and one Briton, Katherine Garrett-Cox of Alliance Trust.