Union officials will meet with the company on Wednesday

They stopped work between 1000 BST and 1400 BST in a pay and conditions row with bus operator First Cymru.

The Transport and General Workers Union (TGWU) said the majority of its 250 members based at the Swansea depot took part in the action.

First Cymru said its six other depots in south Wales worked normally and talks would take place on Wednesday.

The Swansea to Cardiff shuttle service was hit, but National Express coaches ran as normal.

Regional Organiser for the TGWU, Gareth Jones, said: "We have deliberately chosen the hours between 1000BST and 1400BST to cause as little disruption to the people of Swansea as possible so it will not affect school services or people commuting to work."

Talks

He said members had voted for the action over a dispute about pay and working practices.

Drivers in Swansea have been traditionally paid more than at other depots in south Wales and have been offered a smaller percentage pay rise, than some lower paid staff elsewhere.

Union officials are to meet with First Cymru on Wednesday in talks hosted by the conciliatory service Acas.

"We are hopeful of a speedy resolution," said Mr Jones.

First Cymru said services returned to normal after the dispute.

A spokesman said: "First apologises to its customers and assures them we are doing everything possible to resolve this situation."