Even after time in lockdown the idea of swimming here does not appeal! Oh and just to add a little more "spice" there's a nuclear power station about 1/4 mile to the right....
And a shipbreaking yard, and a landfill, and a titanium dioxide plant, and the fermentation facility where they make Quorn. Oh, and a colony of seals too. Maybe not a place for swmmers, but for kite surfing it was very popular when I lived there.