From Journeycheck
21:51 Hereford to London Paddington due 01:17 This train will be terminated at Reading at 00:38.
This train will no longer call at Slough and London Paddington.
This is due to a member of train crew being unavailable.
Message Received :23/08/2012 22:10
Seems a bit odd - do they normally do a crew change at Reading? Or have they persuaded an Oxford man/woman to stay on to Reading to maintain connections?