LONDON, Sept 3 – Three former senior executives of Tesco accused of fraud and false accounting at Britain's biggest retailer are due to go on trial on Monday in a London court.

Christopher Bush, who was managing director of Tesco UK, Carl Rogberg, who was UK finance director, and John Scouler, who was UK food commercial director, are all charged with one count of fraud by abuse of position and one count of false accounting.

They pleaded not guilty at a hearing on August 3.

The case stems from an overstatement of Tesco's profit forecast in 2014.

On Sept. 22, 2014 the group issued a statement to the London Stock Exchange saying that during its final preparations for an interim results announcement it identified a 250 million pound ($323 million) overstatement of its expected profit for the half year, mainly due to booking commercial deals with suppliers too early.

In the following weeks the company suspended eight senior members of staff including Bush, Rogberg and Scouler. Tesco's shares tumbled and the company was plunged into the worst crisis in its near 100-year history.

The estimated profit overstatement, identified three weeks after Dave Lewis took over as Tesco chief executive from Phil Clarke, was later raised to 263 million pounds. Clarke had been fired due to the company's poor performance.

The overstatement concerned guidance published by Tesco in a trading update on Aug. 29, 2014, downgrading its outlook.

According to the charges, Bush, Rogberg and Scouler concealed Tesco's true financial position from its auditors and other employees between Feb. 1, 2014 and Sept. 23, 2014. ($1 = 0.7735 pounds)