(04 Jan 2015, 11:23 pm)Dan wrote Imagine in these sort of circumstances you would be permitted to travel on a later Train B service, as it isn't your fault Train A was delayed?Aye, they usually announce it on East Coast. The 1730 out of London often gets delayed on route, and they keep folk posted with the Cross Country connections further north than Newcastle.
Id guess that only the ECML part will be ticket restricted, with the York to Hull stretch being open. That's certainly the case if you do Blackpool via York, or Glasgow via Edinburgh.