They are the principal authorities in Greater London and have responsibilities including education, housing, planning, highways, social services, libraries, recreation, waste, environmental health and revenue collection.

Some of the powers are shared with the Greater London Authority, which also manages passenger transport, police, and fire.

[2] A Labour councillor for Dalgarno ward, Robert Thomson, resigned in early 2019 because his job required him to relocate.

A by-election was held to fill his seat on 21 March 2019, which was won by the Labour candidate Kasim Ali with the Conservatives coming in second place.

All registered electors (British, Irish, Commonwealth and European Union citizens) living in London aged 18 or over were entitled to vote in the election.