Seven human skulls , 2013 , have so far been uncovered . It is thought they were discarded as part of ritual burial on River Walbrook . Sparked the theory the skulls could be the remains of Boudicca 's rebels . Excavation of 3,000 skeletons at new Liverpool Street site is now complete .
Seven human skulls , nearly 2,000 years old , have so far been uncovered . It is thought they were discarded as part of ritual burial on River Walbrook . Sparked the theory the skulls could be the remains of Boudicca 's rebels . Excavation of 3,000 skeletons at new Liverpool Street site is now complete .