(02 Sep 2021, 10:13 pm)peter wrote I have PVR of 51/52 as 11, 6/12/12A as 10 and 49/49A as 757 are getting E10's I think.
My prediction
5442-5450 from Durham Diamond to Orbit joined by 5451/52
This leaves 10 Euro 6 buses 5453-5462 for the 6/12/12A
Then 5412-5419 could go to Riverside for the 49/49A with 5276-5283 going the other way keeping the Citaro's at Deptford and meaning the 49/49A are not 'downgraded'. That would leave 5463-5469 as 7 buses for the PVR of 7 on the 57.
Also from 5442 - 5469 should be enough to cover all these services with some spares.