Is it not possible to answer that by looking back at five days of RTT and observing whether there are any trains which routinely have 8 coaches?What Reading services are booked for 450s these days? I know pre-COVID they used to cycle every 3 hours or so with 458s.
Indeed there is. Replaced a 458 diagram I think. A couple of weeks ago there was a pair of 707s on the Reading - first time I've seen that in a while.There's a 8 car 455 on the reading route today too, to throw a curveball in there