The rise of the discounters has been one of the year's key trends in grocery retailing. Shoppers, beset by concerns over the economy, have looked to the likes of Aldi and Lidl for greater value. In this month's just the answer interview, Daniel Lucht, senior analyst at retail watchers Verdict Research, tells Dean Best why the discounters should push on in 2009, despite growing competition on price from the likes of Tesco and Carrefour.