@timrichards I can see why they've pushed towards DMUs (Diesel Multiple Units, eg not loco hauled), but It's kind of a shame they've decided to standardise absolutely everything, including removing 1st class. Given how badly they staff the buffets, I'm sure they'd prefer not to have those either.
I guess you could book multiple seats, though it's probably not good etiquette given how crowded some services get - especially on weekends.