After their booked sojourn in the down loop, 800002 & 800001 regain the mainline at Steventon on 6 April 2017 with the 5X32 11:04 Reading West Junction to Swindon test train. Unfortunately this corresponded with one of the clouds that were now building up. The reflection of some of these can be seen in the shiny black area above 800002's windscreen.