There are local government entities in the form of Charter Trustees. They're elected, raise a council tax precept and spend that on their respective boroughs. Their purpose is largely ceremonial, hence admin_level=10, but they still meet the definition of an administrative entity.

It was protruding out into the sea to enclose a groyne which is no longer there.
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Published using OSMCha: https://osmcha.org/changesets/148524406