Oneonetwo has once again applied his forensic recognition skills. Have to say I always have difficulty differentiating a TD4 from a TD5, especially from that angle. But if Oneonetwo says it is a TD4, then it is a TD4!

So most likely one of the Summerhill batch, R41 - 50. This were normally on the 12. Despite its location, bus must be due to turn right to Westmoreland St. It could be a 12, 16 or 17.