Bletchleyite
Veteran Member
Looking at GA's Aventra interiors I don't see any taper. Unless SWR are secretly planning on tilting their 701s on the curves between Battersea and Waterloo I would imagine they'll be no different.
Probably not, though of note is that Siemens have produced Desiros with vertical sides (most of them) and sloped sides (ScotRail 380s). Not sure why the difference.