(09 Feb 2023, 9:19 am)Economic505 wrote check this 1983 Sunderland route map out . It shows 139/140. A proper bus network before Thatcher butchered it.

Wow that’s amazing I was only 2 years old but I do remember the 100’s number sequence 
102 Farringdon to seaburn going to see the illuminations wow

Thanks for searching 
Stagecoach ruined the way we travel around Sunderland 
Remember those bright yellow busways buses well