The UK's most popular supermarket has said it is to introduce "strong deals" over the next three months as it prepares for Christmas. It's being done as Tesco chief executive Ken Murphy said he expected people to spread Christmas spending over a wider period to be more manageable and affordable. Money blog: Ryanair CEO's flights warning The supermarket price war, spurred by grocers competing to lower costs and win customers, "could be even more intensive" over the next months, Mr Murphy said.