Worsening sales expected from Tesco

File photo of a Tesco sign. Credit: Rui Vieira/PA Wire

The United Kingdom's biggest supermarket Tesco is expected to post a third successive quarter of worsening sales when latest trading figures are published today.

The first quarter update is likely to pile further pressure on embattled chief executive Philip Clarke and comes as latest industry data shows a continuing squeeze on the retailer's market share.

Analysts' forecasts for the like-for-like sales decline for the period range from 3.5% to more than 4%. It follows drops of 1.4% and 2.9% in the previous periods.