I rode 21 buses from Go North East over the past few days. There were few repeat rides, as quite often the vehicles had different interiors - the Volvo B9TLs were a case in point. Anyway, the vehicles and respective routes were as follows:

Versa 5387 (Q3), 8319 (28), 8337 (Q1)
Solo SR 693 (19), 659 (208)
Volvo B9TL 6108 (309), 6080 (10), 6153 (58), 6006 (27)
Citaro 5275 (12), 5360 (4)
Coach 7156 (X9)
Streetlite 5448 (16)
Enviro 400-MMC 6339 (X30)
Yutong 8805 (54)
Enviro 200-MMC 5497 (97)
Volvo B5LH 6067 (1a)
Scania Omnidekka 6166 (X1a)
Streetdeck 6328 (21), 6372 (X1)
Scania Omnicity 5252 (57)