Schnellzug
Established Member
I notice that FGW seem to be mixing up the formations of 158s quite cheerfully lately; the other day I noticed a two-car set, 52762-57745, and just today there was a three-car set formed 52751-52763-57764 on the Weymouth line (the end two cars of 158951 with a different middle car). The message here would seem to be to note the coach numbers and not just the unit number, since, it seems, you can never be sure what it actually might be.