(14 Sep 2015, 7:29 pm)GX03 SVC wrote Makes sense now!1799 was one of a few buses acquired from First Stop Travel by Arriva North East and 1799 must have been the only one that wasn't treated to a refurbishment, as I can't imagine it will have been too old at the time Arriva acquired it.That explains the 179x secondhand fleet number.
The seat moquette in 1799 can be seen in a number of different buses, found an Enviro 200 on the Ensignbus website with it.
http://www.ensignbus.com/2008-enviro-200.html