802014 & 802018 pass Hungerford Common on 20 July 2021 with the 1A78 07:08 Penzance to Paddington GWR service. This was running one minute ahead of schedule here, but it was not to last. Just a few miles down the line at Newbury problems were encountered. Whether this was due to the switch from diesel to electric I'm not sure, but it left 57 minutes late, and it just got worse from there on. It limped into Reading over two hours late, and unsurprisingly was terminated there. Brand new trains, but first manufacturing defect cracks were discovered, now the same old reliability problems!