Darlington are getting 13 new Streetlites for Ser 1/5/12/19 next year in Sapphire spec.

The DD recently moved from Durham will remain generic, for use il on both, primarily the busy BA college runs on Service 5.

The Pulsars will be offloaded to Stockton and Durham (replace SB120s and Streetlites - allow Sapphire for Service 23 with Pulsars and Streetlites to Newcastle).

X26 isn't even considered at this point. The Scanias are not due off until 2020 - fifteen years of life.