The claim comes as 159 MPs wrote to bosses at Leeds-headquartered Asda calling for an end to "pay discrimination" of its supermarket workers.

MPs have signed a letter to TDR Capital, the private equity co-owners of Asda, in a new attempt to get the supermarket to begins negotiations with the GMB union

Members of Parliament have written to Asda, urging its bosses to end sex discrimination and provide equal pay to its supermarket staff.

Last week, protests were held outside the Manchester Civil Justice Centre, where the case began and is expected to last for three months

More than 150 MPs called upon Asda’s bosses to settle an ongoing equal pay legal battle after Mohsin Issa confirmed he would be stepping down from running the supermarket.

More than 150 members of parliament have called on Asda’s bosses to settle their ongoing gender-equal pay legal battle, GMB Union reports.