10. Called to the Bar - Lincoln’s Inn, London

The Team visits Lincoln's Inn, London where they have been asked to investigate the remains of a 13th-century palace that belonged to Henry III's Lord Chancellor. There were only a few areas within Lincoln's Inn where any excavation could take place. As well as it not being possible to dig under the other historic buildings, a huge London plane tree precluded any excavation that would threaten its root system.