(ShareCast News) - Drink giant Diageo has appointed Kathryn Mikells as chief financial officer based in London with effect from 9 November.Mikells joins the company from Xerox Corporation, where she is currently CFO, a position she has held since May 2013.Diageo said Mikells has worked in a number of senior finance roles for global consumer facing and b2b businesses, including United Airlines where she spent the majority of her career and was CFO from 2008 to 2010.Chief executive Ivan Menezes said: "Diageo is focused on driving performance from our core and on improving productivity to drive out cost to invest in growth."Kathryn has the experience of working with teams to drive disciplined performance management which will contribute to the achievement of our performance ambition. We are starting to see the benefits of the changes we have put in place and I am confident we are uniquely positioned to take advantage of this growth sector."At 1412 BST, Diageo shares were up 1.1% at 1,801.50p.