We teamed up with the University of Southampton to answer the centuries old question ‘why are so many Roman skulls found in the Walbrook valley?’ Bringing together archaeological evidence and oceanographic testing, we have shown that natural forces, erosion from the Walbrook River, can be credited with causing this mysterious phenomenon.

The findings are revealed in ‘Mystery of the Crossrail Skulls’ produced by True North Productions, airing on Channel 4, on Sunday the 24 April, at 8pm, which explores a range of theories, including long-lost rituals.