Shares in Tesco opened nearly 2% higher following the sales update.
Chief executive Philip Clarke said: "Our customers are seeing the evidence of the changes we're making and they're telling us they like what they see."
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Prince Philip's final public engagement as a royal before retiring will take place in early August, Buckingham Palace has announced.
Passengers have been escorted off the Oblivion rollercoaster ride at Alton Towers after it stopped at its highest point.