Sainsbury's LSE:SBRY, Britain's second-largest supermarket group, on Tuesday joined industry leader Tesco LSE:TSCO in reporting slower underlying sales growth in its first quarter, though it left its full-year profit guidance unchanged.

The group, which has a UK grocery market share of 15.3%, said like-for-like sales, excluding fuel, rose 2.1% in the 16 weeks to June 20 - below analysts' consensus forecast for growth of 2.7% and the 3.1% achieved in the previous quarter.