Steve Backshall warns of 'death potion' in river
Samples taken by the TV naturalist show high levels of norovirus and E. coli in part of the Thames.
BBC News
The River Thames, known alternatively in parts as the River Isis, is a river that flows through southern England including London. At 215 miles (346 km), it is the longest river entirely in England and the second-longest in the United Kingdom, after the River Severn.
Samples taken by the TV naturalist show high levels of norovirus and E. coli in part of the Thames.