Original: There are 36 metropolitan districts, 32 London boroughs, 238 non-metropolitan districts, 46 unitary authorities, the Isles of Scilly, and the City of London, making a total of 354 district-level authorities.
Simplified: There are 36 metropolitan districts, 32 London boroughs, 238 non-metropolitan districts, 46 unitary authorities, the Isles of Scilly, and the City of London, making a total of 354 district-level authorities.