Ken Livingstone becomes the first Mayor of London (an office separate from that of the Lord Mayor of London).

Kenneth Robert Livingstone is an English former politician who served as the Leader of the Greater London Council (GLC) from 1981 until the council was abolished in 1986, and as Mayor of London from the creation of the office in 2000 until 2008. He also served as the Member of Parliament (MP) for Brent East from 1987 to 2001. He is a former member of the Labour Party, ideologically identifying as a socialist.

The 2000 London mayoral election was held on 4 May 2000 to elect the Mayor of London. It was the first election to the office established that year; the idea of a mayor of a Greater London Authority (GLA) had been included in Labour's 1997 election manifesto, and after their election a referendum in London was scheduled for May 1998, in which there was a 72% yes vote with a 34% turnout.

The mayor of London is the chief executive of the Greater London Authority. The role was created in 2000 after the Greater London devolution referendum in 1998, and was the first directly elected mayor in the United Kingdom.

The Lord Mayor of London is the mayor of the City of London, England, and the leader of the City of London Corporation. Within the City, the Lord Mayor is accorded precedence over all individuals except the sovereign and retains various traditional powers, rights, and privileges, including the title and style The Right Honourable Lord Mayor of London.