Professor Michael Fulford said that 13 years of excavations at Calleva had revealed evidence of the first gridded Iron Age town in Britain.
The site also bears the scars of possible early Roman military occupation, and evidence of later, widespread burning and destruction.
This suggests the site could have been destroyed at the hands of Boudicca.
Queen Boudicca waged war against the Romans in Britain from 60 AD after the Romans decided to rule the Iceni directly and confiscated the property of the leading tribesmen.
Boudicca’s warriors successfully defeated the Roman Ninth Legion and destroyed the capital of Roman Britain, then at Colchester. They went on to destroy London and Verulamium (St Albans).
Thousands were killed. Finally, Boudicca was defeated by a Roman army led by Paulinus. Many Britons were killed and Boudicca is thought to have poisoned herself to avoid capture.
The site of the battle, and of Boudicca’s death, are unknown.