(14 Sep 2025, 4:00 pm)Malarkey wrote Imagine the reliability of the service if there are issues on the route of the 50, I'd have said it would be been better to interwork it with 16A in Durham.

The 50 does struggle now at times with timekeeping, but the new timetable allows 6 minutes extra to Durham and 7 minutes extra to South Shields off peak. That means it will take the best part of two hours end to end.
Don't forget that Washington covers the Langley Park section of the X20 on a Sunday so the drivers will already know the route.
A full round trip from South Shields to Langley Park and return will take 5 hours, so 10 buses will be needed.