The UK Government notes these recommendations, although agrees that electrification will play an important role in our programme to achieve our net zero 2050 target (see the response to Recommendation 5). Future decisions on electrification of the network will be guided by Network Rail’s TDNS, a set of recommendations that suggests which traction decarbonisation solutions (electrification, battery, or hydrogen) could be best suited to which parts of the currently unelectrified network. The 2017 cancellation of the electrification of the main line between Cardiff and Swansea was due to significant increase in costs and poor value for money. A driving reason was that electrification would provide no significant journey time saving between Cardiff and Swansea, as the maximum line speed over most of the route between the two cities is 90mph. The full benefits of running the Hitachi Intercity Express Trains in electric mode would not be possible even with electrification, with comparable journey times regardless of whether operating in diesel or electric.