800001 passes South Marston on 28 March 2017 with the 1X81 12:19 Bristol Parkway to Paddington test run. The white colour scheme of this first production unit certainly shows up, and looks more impressive than the drab dark green that the GWR units will be outshopped in. However, practically green is probably better on the working railway, as I presume 800001 has had lots of tender loving care and cleaning, to keep it looking this pristine.