If they were not cleared to Great Malvern, then there would not be signs up for the stop position marked "2+4 HST".
As for these diversions, I fully expect to be on one of the morning runs to Weston-super-Mare on the 11th of August. I don't do track these days, but this is a special exception. I may never get another chance to do this!
If it's a GTi HST then happy days, if it's not then c'est la vie. The track is what matters, it could be a Merseyrail seated Pacer as far as I'm concerned, I'd still do it for the track. My mission is to add in some cycling while in the area, so it's a two birds one stone situation for me
