B/W print; interior of an SA-class trolleybus, by Topical Press, 1941

This picture taken in November 1941 shows the interior of a S.A.-class trolleybus, when this was first used in London. To the left of the shot, a screen marks the entrance which has been converted to seating to maximise passenger capacity. To comply with blackout regulations, the windows are fitted with half-blinds, and the light bulbs are enclosed in funnel-shaped shades. The SA-class was originally built for export to Durban, South Africa, and was introduced into London Transport service during the Second World War.