This is between Moreton Cutting and the London end of Didcot. The tracks at this location are 'up/down local' on the north side and 'up/down main' on the south side with Moreton Yard (beyond the bridge in the distance), on the north side. This quadruple arrangement extends from Paddington to the west of Didcot.

Judging by the reporting number, loco and rolling stock this a South Wales relief on the Down Main.