From this post (
https://www.railforums.co.uk/threads/national-routeing-guide-update.99396/page-58#post-7073918) on the National Routeing Guide update thread:
Station link changes:
Ashington (ASL) to Bedlington (BEJ) now has a distance of 1.99.
Bedlington (BEJ) to Blyth Bebside (BLI) now has a distance of 1.70.
Blyth Bebside (BLI) to Newsham (NWH) now has a distance of 1.70.
Newsham (NWH) to Seaton Delaval (SEJ) now has a distance of 2.10.
Northumberland Park (T&W) (NOP) to Seaton Delaval (SEJ) now has a distance of 3.06.
Manors (MAS) to Northumberland Park (T&W) (NOP) now has a distance of 5.88.
Ashington (ASL) to Newsham (NWH) now has a distance of 5.39.
Ashington (ASL) to Seaton Delaval (SEJ) now has a distance of 7.49.
Newcastle (NCL) to Seaton Delaval (SEJ) now has a distance of 9.52.
I presume the distances are in miles