Yummy. Must try this when doing #interrail (1st class) in the UK soonish. The best #diningcar offering on British (regular scheduled) #trains, I think. For 1st class passengers, but (obviously) not complimentary. https://www.youtube.com/watch?v=0l7erIsHt5Y
The complimentary menus offered in 1st class on LNER and Avanti West Coast do seem great too. I might even do some back and forth trip, like London–Coventry–London or Glasgow–Carlisle–Glasgow, just to enjoy a two-course free meal (i.e. two single courses)...