Plus there is swimming in some of the docks: https://londonsroyaldocks.com/open-water-swimming/
Those solve many of the problems listed above: (pollution, current, boats, permission, safety)
Ah, that's good. It seems to correspond to the approach jellybaby recommends.
@Greenbank started
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Plus there is swimming in some of the docks: https://londonsroyaldocks.com/open-water-swimming/
Those solve many of the problems listed above: (pollution, current, boats, permission, safety)