CGI of new electric trains between London and Swansea
This is what the new electric trains should look like when they run between London and Swansea.
The Hitachi Class 800 express train will run on the south Wales to London road when the electrification programme is completed in 2018.
This computer-generated video and still images show what the trains will look like.
CBI Wales director Emma Watkins explains how electrification can help boost business links between south Wales and London - as well as the project being a business opportunity in itself.