Noticed that yesterday arriving about 12:30. It shuttled out to the next signal on the westbound line and then back into the station, presumably to free up platform space, heading back towards Oxford at around 13:00.
It was there again today
Also yesterday, a very clean HST set passed through from the Oxford branch about 12.55 and through the station west to east. On the rear was 43189 (currently nameless) with what looked like a blanked out name plate.
Anyone else see this, or know if this is about to be renamed?