ASDA workers will remain among the lowest-paid supermarket workers in Britain even after they receive a pay rise on Sunday, GMB said today.

Hourly pay at the retail giant will rise to £12.45 per hour on July 6, which still lags behind workers at Tesco, Sainsbury’s, Aldi and Lidl.

The rate will match Sainsbury’s workers but will be 4p less than Tesco counterparts and 15p less than those in Lidl or Aldi, according to industry magazine the Grocer.

GMB added that a promised wage rise to £12.60 has been delayed to October, leaving workers on average £200 worse off over the year. 

Asda wages were just £12.04 per hour until April 13, when they rose to £12.21. 

GMB national officer Nadine Houghton said: “Asda has been stripped to the bone by its private equity owners TDR Capital who fail to understand shop floor staff are one of its biggest assets. 

“Any turnaround plan not putting retail staff front, back and centre will fail — these essential workers need to be invested in, not forced into poverty.”

The union also hit out at a loophole in the law which it said allows Asda to pay its retail workers below the National Minimum Wage during the first two weeks of April.

“GMB calls on Asda to deliver an above inflation pay rise every April, pay back the £200 workers have had stolen through this staggered, penny-pinching approach and to give them the money owed to them when they were not being paid the national minimum wage rates in April," said Ms Houghton.

Asda was contacted for comment.