Great news on the welsh tidal barrage in Glam - Somerset. The case has to be made for a rail line on its top as that would allow full usage of Cardiff Intl and the industrial works in Bridgend and on the soon to be electrified Valley Lines. they could also be used wither for further line upgrades west of Swansea or a High speed line as far as Swansea using the G western Main line or running paralell to it East To near reading before going in tunnel.