(14 Feb 2015, 11:43 am)atlantean542 wrote 7601 - 7615 were all delivered Nov/Dec 2009 in Arriva Interurban livery
7601, 7602, 7603 went into Quorum livery Aug 2010
7604, 7605 went into Quorum livery Oct 2010
7606, 7607 went into Quorum livery Dec 2010
7608 went into Quorum livery Jan 2011

on my flickr I have uploaded some photos of 7601-7608 in Arriva Interurban livery and 7602, 7603 in the orginal Quorum livery
https://www.flickr.com/photos/99435494@N02/

Hope this info will help you