(05 Nov 2014, 5:13 pm)palatine3833 wrote Yes, they are scheduled to do that but they were bought to operate between Durham and Newcastle.

But they still do - the evening and Sunday X21 boards from Durham are formed by 21 services from Newcastle.

The difference here is that one is scheduled and one isn't. The former means that Go North East is continuing to allocate the vehicles to the service for which they received funding to allocate these vehicles to and are merely allowing another route to be more environmentally friendly when service 21's vehicle requirements are lower, whereas the latter means that the service which Arriva North East received funding for isn't being allocated these vehicles and another service is instead.