Extensive long-term excavations at Gill Mill revealed polyfocal floodplain settlement of middle Iron Age date, one area continuing in occupation into the early/mid-third century a.d. Elsewhere a nucleated site of c. 10 ha developed de novo from the early second century around a network of minor roads. Characterised by extensive systems of enclosures and limited structural evidence (but probably including a shrine), this settlement, occupied up to about a.d. 370, is interpreted as concerned principally with cattle management and marketing, perhaps with a partly seasonal population base.