Abstract: A public transport vehicle vending trolley display device (10) comprises a tray (11) having a base (12) and opposed pairs of upstanding side and end walls (13, 14, 15 and 16). The tray (11) fits within an internal compartment (44) of the trolley for storage and rests on an upper surface 41 thereof in use. The display device (10) further comprises a first generally rectangular elongate link plate (21) hinged by one long edge to one tray side wall (13), and an advertising panel (25) is hinged to the opposed long edge of the link plate. When stored in the compartment 44 the advertising panel (25) overlies the tray base (12). When removed from the compartment (44), the tray is placed on the upper surface (41), and the link plate 21 and advertising panel (25) are hinged down to lie alongside a side face of the trolley (40), so exposing the advertising panel (25) to passengers seated on the pubic transport vehicle.