Yes I find the GWR HST dreadful for thay very reason. It's like bring sat in a cell, particularly if not next to a window. I thought the 800 was much nicer in comparison, although another couple of inches off the seat backs would have made it even nicer.
Does seem perverse that train seats now have to be so massive when they crash far less frequently than cars, and decelerate far more slowly than a car in a crash too.
Does seem perverse that train seats now have to be so massive when they crash far less frequently than cars, and decelerate far more slowly than a car in a crash too.