(11 Dec 2023, 11:11 pm)Storx wrote The 21 is GNE's flagship route.
10, 20, 56, X1 are the other 4 main ones though imo.
I wouldn't count anything else as really flagship.
Stagecoach Newcastle: 39/40/62/63
Arriva Northumbria: Unsure, all could be for a shout bar the 1/2/35/57/57A
Arriva Durham County: X4/63/X66/X67/7
Stagecoach Sunderland / South Shields: Unsure, E1/E2/E6/3/4 Sunderland?
Stagecoach Teesside: 12/36/37/38
That's what I'd say for them all personally.
For Sunderland, I'd say either [3 or 20] and X24.