Tesco to invest £1bn to revamp UK operations
18 April 2012 Last updated at 15:04 BST
With profits from it's British stores shrinking, Tesco has conceded that it needs to "raise its game".
The supermarket giant will now spend £1bn on a revamp.
As the BBC's Business Editor Robert Peston reports, profits worldwide are up, but performance in the UK is a cause of concern for the company.