Kind of inevitable that thought isn't it? Liverpool - Manchester - Leeds and Manchester Airport / Manchester Piccadilly - Leeds are slower now than in 2015. The Greenwich line and a few other Southeastern Metro stations receive a less frequent service than then. Manchester - London, Nottingham - London and Liverpool - London are all several minutes slower typically than they were then. Peak services between London and Brighton or London and Dorking or London and Shoeburyness all slower. Brigg (Saturdays) or Gainsborough - Sheffield, with express Sheffield - Lincoln abandoned. Reading - Birmingham, Reading - Southampton, York - Doncaster - Sheffield, several services missing. Newcastle - Glasgow nearly all the direct services gone. And so on and so forth. Loads of people have had their journeys short changed compared to 6-10 years ago and that's quite deliberate. The current government has continued this policy.