(23 Feb 2014, 7:05 pm)JoshP wrote So all 12 Temsa cascades are going to Durham? And I think that's bound to happen with any bus company in the country to be as Eco friendly as possible. I don't mind hybrids, as long as the service is good and Arriva actually maintain the upkeep of the vehicles so they appeal to passengers and us enthusiasts.

I don't know a definite answer yet but they look likely to go to Durham.
Let's look back at what we know already

8 VDL Pulsar - Jesmond - Service 306
6 Volvo B9TL -Ashington/Alnwick - Service X18
6 ADL Enviro 400 - Ashington - Service X21/X22 (Sapphire spec - along with 8 existing E400's refurbished, expected to be 7514-21)
5 VDL Pulsar - Durham - Service 23
14 VDL Pulsar - Redcar/Whitby - Service X3/X4/4 (Sapphire spec)
10 VDL Pulsar - Stockton - Service 5/5A (Sapphire spec)

Along with 11 Volvo B7TL (ex London) which look likely to end up in Northumbria, though they want to try one on the X93 Middlesbrough - Scarborough to see how it handles the route, having spent all of their lives in London so far.

60 vehicles into the fleet will ultimately lead to 60 out, though this may change within a few each way depending on service changes or other contracts starting/finishing.
This will include all of the DAF SB220 vehicles, as well as any non DDA Dart MPD's. It will also see the end of the remaining high floor double deck vehicles (namely 7367, 7482, 7483).
There are more possible cascades rumoured, namely 5 Van Hool coaches from Green Line expected to go on service X15 to Berwick.