Thanks. Hi, the HST GTIs don't have 1st class unfortunately and won't be running anywhere near London. No one can know the diagrams post 22nd March yet but it seems likely there will be a small number left covering Paddington to Plymouth, this will probably be vastly reduced compared to current diagrams though. Only thing that can be said for certain is that they won't be on any diagrams that start or finish in London anymore, so evening departures from Plymouth will be IET and there won't be any leaving London till mid morning at the earliest. As for classic traction, Scotland and getting value out of the rover I'd recommend doing the Fort William or Inverness portions of the Caledonian Sleeper before they're replaced, but I'm getting off topic.