Running 23 minutes early, 800001 & 800002 pass Steventon on 6 April 2017 with the 5X33 12:46 Swindon to Reading West Junction test train. I presume that once they are in service, two five car Class 800/0s will be an unusual working, with a single nine coach Class 800/3 being used for longer trains. The formation pictured here has no corridor connection between the two halves.