Last night from Stockton:

'MAX X12' 1443 was out the whole night on 5s in place of 1558
1558 acted as spare bus from the time it was taken off 5s (at 1612), covering a 28 into the town from James Cook Hospital and a 29a out to Cypress Road, before going onto 7As at 2005 to replace the late running inbound working

And due to 1442 breaking down in Pity Me, 1498 was loaned to Stockton briefly for an X12 - replaced by 1410 at 1505, it then replaced 1443 to work the 1610 to Newcastle to swap back over.
Durham also had 'Sapphire 6' Pulsar 1528 on X12s yesterday