Downstream

have warmer summers and
people are attracted to
riverbanks. It’s a free activity
and it’s more popular now,
but that doesn’t mean it’s
safe. People still go and swim
at Tumbling Bay, although
it’s not open any more, and
there is a drowning there
every few years.’
Perhaps the most dangerous
activity on the Thames is
jumping from bridges, which
Russell says goes on all over