Complex sentence: From 1997 to 2008 she was chief executive of the Economist Group, during which time profits greatly increased and the circulation of "The Economist" more than doubled: in 2004 she received a CBE for services to publishing.
Split into simpler sentences: From 1997 to 2008 she was chief executive of the Economist Group, during which time profits greatly increased and the circulation of "The Economist" more than doubled. In 2004 she received a CBE for services to publishing.