I've travelled London-Glasgow quite a few times over the years since the 90's and I've noticed that the timetable has got gradually slower and slower recently a

I've travelled London-Glasgow quite a few times over the years since the 90's and I've noticed that the timetable has got gradually slower and slower recently and now it's no faster than the 40 year old trains they replaced in the late 90's. The fastest time went from 5:00 down to about 4:20 when the pendolions were first allowed to go at full speed. But now there seem to be only about 2-3 trains a day that do it in less than 5hrs. TBH, if it's going to take 5hrs+ they might as well have stuck with the old style trains as they had more comfortable seats with better legroom.