Since its inception, the London Underground has provided some of the most recognisible imagery in the capital and this has certainly been helped by a forward-thinking approach in its poster artwork.
The exhibition shows how the Tube's style has moved with the times and picked some of the brightest artists of the times.
The museum is open 10-6, Saturday-Thursday, and until 9pm on Friday. Entrance is £10. For more information visit http://www.ltmuseum.co.uk/.