(11 Mar 2016, 6:51 pm)GX03 SVC wrote Hahahaha
yep. It was an x15.
Do you know which one it was? I passed 7511 at around 5:30 near Haggerston heading from Berwick, after passing 7517 around 5PM, with passengers still on the lower deck?
Had they been sitting there for about an hour and a half? Did anything replace 7517 further down the route?