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A 24-hour strike by Arriva Trains Wales drivers, as part of a dispute over pay and conditions, will go ahead resulting in all services being cancelled.

Members of the Aslef union will walk out on 4 January, the day many return to work after the Christmas break.

Union members have been refusing to work overtime for the last three days.

The union said a pay deal had been accepted, but a dispute remained with changes to terms and conditions. Arriva said it "regrets" the disruption.

An Arriva spokesman said the strike could also result in some early morning disruption on 5 January.

He advised customers to make alternative travel arrangements for Monday and to check travel plans for Tuesday.

A planned strike was called off in November.