As is pointed out in this thread on the Lincolnshire Day Ranger at https://www.railforums.co.uk/threads/lincolnshire-day-ranger-missing-towns-lines.222308/ the said ticket is not valid in the northern part of its namesake county such as on the lines via Brigg and Scunthorpe or the Barton-on-Humber branch (although between 1974 and 1996 much of the area where it isn't valid was part of Humberside, not Lincolnshire, and today much of that area south of the Humber is split between the unitary authorities of North Lincolnshire and North-East Lincolnshire).
Also mentioned in that thread is that back in the day the East Midlands Ranger was valid across pretty much all of the East Midlands, including the northern part of Lincolnshire (or rather what had historically been part of Lincolnshire) and the East Coast Main Line between Peterborough and Doncaster, but today that is no longer the case even though Lincolnshire is classed as East Midlands (as is Nottinghamshire, and the ECML also serves two towns in Notts: Newark and Retford).
This got me thinking: I wonder if there are any other examples of rover or ranger tickets that aren't valid for certain lines or destinations where one might expect them to be valid, particularly if their name suggests that they ought to be valid there (or, conversely, that are valid where you wouldn't expect them to be valid)?
Also mentioned in that thread is that back in the day the East Midlands Ranger was valid across pretty much all of the East Midlands, including the northern part of Lincolnshire (or rather what had historically been part of Lincolnshire) and the East Coast Main Line between Peterborough and Doncaster, but today that is no longer the case even though Lincolnshire is classed as East Midlands (as is Nottinghamshire, and the ECML also serves two towns in Notts: Newark and Retford).
This got me thinking: I wonder if there are any other examples of rover or ranger tickets that aren't valid for certain lines or destinations where one might expect them to be valid, particularly if their name suggests that they ought to be valid there (or, conversely, that are valid where you wouldn't expect them to be valid)?