 Complete the following phrase:  Channel 5 broadcast two television series looking into day-to-day challenges of the Great Western mainline, including events at Dawlish as well as the sea wall destruction, Cheltenham race day and rugby at Cardiff. It was broadcast as The Railway: First Great Western and the last series aired in 2015. A similar series based on London Paddington started in September 2017 and covered events such as the reaction to the 