'London to Swansea rail electrification delays possible'

The electrification of the rail line from London to Swansea could take longer than planned, Welsh Secretary Stephen Crabb has indicated.

The project is due to be completed by 2018, but there have been delays in the electrification of the network around the UK.

Mr Crabb said the upgrade commitment was "rock solid" but it might not be completed on time.

Network Rail said a review of its five-year investment plan was under way.

"Network Rail has got a lot of balls in the air at the moment," Mr Crabb said.