Jack's the Boy AKA Night and Day
(1933, Jack Hulbert, Cicely Courtnedge)
A street scene involving a traffic jam and a very long ladder features two London Transport AEC NS doubledeckers. Mostly seen is NS204 (XO1058) (and depot code P for Old Kent Road garage can be seen on the side) but there's also a glimpse of NS170 (XO1018):
A chase scene later takes the camera on a thrilling zigzag through busy London traffic. Seen are STs, LTs and NSs, including what might be NS374 (XO4056):
It's not clear whether this is a bus or a truck:
