The Environment Agency has apologised to Oxfordshire residents for failing to issue a flood warning until six hours after they were under water.
Among the flooded were seven properties in the Wendlebury area and another three in Steventon near Abingdon. It happened when a third of a month's rainfall (33mm) fell in one night last week.
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Tuesday afternoon's weather for the west of the region
Tuesday afternoon's weather for the east of the region
Police believe it is a "distinct possibility" that Halliwell was a serial killer, beyond the two murders he was convicted for.