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Arriva Trains Wales drivers are to stage a 24-hour strike on February 1 in a row over conditions, the Aslef union has announced.

The walkout follows a 24-hour stoppage on January 4 , the first day back after the Christmas break, which ground the operator's network to a halt.

The dispute centres around pay and conditions.

A planned 48-hour strike in November was called off at the last minute.

A union statement said: “Aslef today announced that, in the light of Arriva Trains Wales’ failure to offer a satisfactory resolution to the long and ongoing dispute with its drivers, our members will withdraw their labour for 24 hours on Monday February 1.”

Simon Weller of Aslef said the dispute was now about the length of shifts.

He said the company had agreed last November that the working day would be reduced to nine-and-a-half hours, which Aslef had been calling for.

Aslef accused the company of reneging on the deal.

The dispute flared last year over pay and conditions, including planned changes to shifts.

The company carries around 65,000 passengers every day on more than 120 trains across Wales and the border with England.