(03 May 2015, 11:26 am)Robert wrote Spot the mistake. Hate to correct people knowing that im not that knowledgeable myself but we all make them.
Well spotted - 4843 (R843 PRG) is the one at Chester-le-Street, and not 4842.
As citaro5284 said, quite likely that the rest of the R-PRG Volvo B10BLEs will be withdrawn soon, too, but some of these will be released by other buses rather than directly replaced.