For diagrams for all sorts of workings, written in plainer English than that other suggestion, see this site
http://www.thejunction.org.uk/ and click on the Diagrams link at the top of the page. The
XC▸ HSTs▸ ones are pretty near the top of the list and were up-to-date in May, so can't imagine they will have altered since.
Thanks.
I do get lost in the hyrogliphics of trains sometimes.
I like to see a bit of
prose...
All the XC HST services run through FGW▸ territory, and the appropriate FGW timetable tells you which ones are HSTs, so if you compare the FGW and XC timetables you can work it out...
But if you want to go Birmingham > Durham > Birmingham as posted, you can't do it in one day, because the HSTs all go from various points North to Plymouth then return North in the afternoon...
Thanks, that's useful, as FGW put the New Street arrival time on. I wouldn't do Durham and back in a day. Not enough time to do the city justice! (which is the primary reason for my trip)