The Times caused a sensation almost 80 years ago when it revealed the discovery of an extraordinary street grid of a Roman town in Norfolk. It published dramatic aerial photographs that were taken from an RAF aircraft and which showed the pattern left in parched barley fields during the exceptionally dry summer of 1928.

Today The Times can reveal that the site of Venta Icenorum, which dates primarily from the 1st and 2nd centuries AD – and which may have been home to Boadicea, the ancient British queen – is far more significant than anyone had realised.

The latest scientific technology shows that the town, which today lies at Caistor St Edmund, south of Norwich, is one of “stunning international archaeological importance”, archaeologists say.