Supermarket Tesco has hailed its highest market share for more than a decade as it notched up a rise in festive sales despite "intense" competition.The group increased its share of the market to 28.7% in the three months to December 28.The UK's biggest grocery chain reported a 3.3% rise in UK and Ireland like-for-like sales over the six weeks to January 3, with growth of 3.2% in the UK and 3.8% across Ireland.

Supermarket Tesco has hailed its highest market share for more than a decade as it notched up a rise in festive sales despite "intense" competition.The group increased its share of the market to 28.7% in the three months to December 28.The UK's biggest grocery chain reported a 3.3% rise in UK and Ireland like-for-like sales over the six weeks to January 3, with growth of 3.2% in the UK and 3.8% across Ireland.