There were local government elections in London on Thursday 22 May 2014. All councillor seats on the 32 London borough councils were up for election. The electorates of Hackney, Lewisham, Newham and Tower Hamlets also elected their executive mayors, who operate in place of council leaders in those boroughs. Ward changes took place in Hackney, Kensington and Chelsea, and Tower Hamlets, which reduced the total number of councillors by 10 to 1,851. Both the mayoral and councillor elections are four-yearly.