It appears 24103 has worked part of a 36/38 board as it is sat outside the Office in Stockton High Street with the RTC still visible in the window. (For the benefit, the board it worked is the only one to do the entire set of routes that make up what was the Main Line from North Ormesby to Norton)
EDIT: it's now replacing 27166 on 37s
RE: Stagecoach North East: Rare & Odd Workings - February 2016