(29 Jun 2014, 5:37 pm)Andreos Constantopolous wrote http://www.arrivabus.co.uk/boro-11.aspx

Noticed them appearing on the x1/2 more and more recently.
No idea why these specific Pulsars are allocated over other non-route specific vehicles.

Because some of the named ones used to be branded for other Stockton routes so wouldn't normally be on X1s. Now they can use anything.