Bear in mind that that only makes up two diagrams
But the
FGW▸ website's Network Updates only appear to record a train as short-formed if it is not being operated by the type of train that is actually supposed to be on the working that day.
For example, the diagram that starts with the 05.42 London to Worcester is clearly still booked for an Adelante on the train plan, as it has never been shown as short-formed on the website since the start of the new timetable. It was an Adelante this morning, as was the 17.51 from London to Worcester tonight, which is part of the same diagram.
If you want a final blast in a 180, this duty is looking like an increasingly good bet to be pretty much the very last to go. Takes in a couple of London-Oxford round trips in the middle of the day, before finally heading home to Old Oak as the 20.58 from Worcester.
As well as the Oxford services today, an afternoon working to Cheltenham and back was also shown on the website as short-formed with five coaches, so I'm sure there were at least the five Adelantes working that redskin suggests, before you factor in whatever was used to cover for that defective
HST▸ .
I doubt it was another HST, as resources seem stretched pretty thin. At least one diagram today was a scratch rake of anything that would move, as the 07.51 London to Malvern was apparently operated by a set made up of four open firsts and three open standards.