Doncaster Corporation 188, 388KDT, a 1963 Leyland Titan PD2/40 carries a Roe body that is some 7 years older. This is because the body was originally fitted to a trolleybus, 395, EWT480, which started life with Mexborough and Swinton as a single decker.
The thicker upper deck window pillars (originally used to house trolleybus electrics) and the extra height of the vehicle are pointers to its previous incarnation. Similar bodies were also transferred to Daimler CVG6 chassis

Photo taken by Chris Hough, Sunday 14 September 2008, Meadowhall Rally Sheffield