Tesco reports 0.1% rise in UK Christmas sales

LONDON (Reuters) - Tesco , Britain's biggest retailer, ground out a 0.1% rise in underlying sales in its home market during what it said was a "subdued" Christmas for consumer spending.Showing how hard supermarkets had to work over the festive period, Tesco said it had outperformed its rivals after enjoying the biggest ever day of UK food sales in its history, which helped it secure the tiny rise in organic growth.Industry data published on Tuesday showed Britain's supermarkets recorded the..