PC Gwe Hst - Two Sets Of Timetables, Any Ideas?

Since MML launched, there are two sets of HST timetables, both have different service numbes and times? Any ideas?
Are they different formation lenghts? I havent checked for myself yet.

 

In real life there was only 8+2 on the GWML (the mainline route)

 

Ah okay! Just looked and one set is 7+2 and the other is 8+2.

Would have been nice if that was in the unit description, but mystery solved thanks!

 

That has always been a thing, even in TSW2 (when I joined)

 

Show's how much I drive the HST