Downstream

and think it’s the sea. A lot of
our work is really helping
people realise how wonderful
the Thames is. It is the
cleanest river flowing through
any world city and has a
hundred and twenty-five
different species of fish.
Sometimes at Chiswick it
feels like we’re overrun with
geese, cormorants, swans and
herons.’
But as for swimming, the
Thames is much wider than