Exploring the hidden heart of Bradford

Hidden between city square and Ivegate, the tunnels known as Sunbridge Wells weave their way over three levels. Starting out as a quarry in the 13th century, the tunnels went through several transformations before being abandoned after their heyday in the 1960s. Work is now going on to bring the area back to life as an underground market. Jon Mitchell went to find out more.

Stills courtesy of Simon Sugden.