Since William Lindesay first walked 2400km along the Great Wall back in 1989, he has written and produced numerous accounts of the history and culture surrounding China’s most famous landmark. His most recent exhibition uses the technique of ‘rephotography’ – the act of repeat photography at the same location with a time lag in between – and provides unique evidence to illustrate specifically how the Great Wall has changed, since the first photographs of it were taken, as long ago as the 1870s.

Tonight Lindesay shows slides from his recent exhibition, and discusses his various impressive works which featuring the Great Wall.