Transition time on the Great Western Mainline. The electrification masts are already spoiling the scene at Lower Basildon, but the stalwart HSTs are still soldiering on, nearly four decades after their introduction. 43137 Newton Abbot 150 leads the 1L54 11:55 Cardiff Central to Paddington First Great Western service past the track workers on 30 March 2015, catching a brief burst of unexpected but very welcome sunshine. The Met Office had correctly forecast a sunny morning, followed by cloud coming in from the west before lunchtime. This transient brightness was very short lived, and it was time for home straight afterwards. Note the rusty tubular steel pile lying in the grass to the right of the train.