Downstream

in a few minutes, then you
keep close to the riverbank as
there is less current at the
edge. It’s a slightly unfair
race because if you’re fast
then you get to the turnaround
point and the tide is still
coming in so you get a good
push back. But for a weaker
swimmer you get halfway
and then you’re swimming
against high tide.’
However, he says, ‘people
just like to swim the Thames