Worcestershire
The PM said he was "so sorry to hear it" when told about the extent of the flooding.
West Mercia Police have told people in Wharfage to leave homes and businesses immediately.
Rivers Wye and Severn threaten to breach flood barriers in as around 600 properties have already been hit by Storm Dennis.
A 44-year-old man has been detained by police.
It is not yet known why the person was walking on busy m-way.
Sam Branigan has links to Sandwell and Dudley.
The 20-year-old leapt from the dock and ran past astonished staff.
There will be no further details until formal identification takes place.
18-year-old Thomas Jones had just started a teaching course at the University of Worcester.
Officials said they were distracting motorists.