Local government in London recent organisation, having been set up in 2000 to replace the similar Greater London Council (GLC) which had been abolished in 1986. The headquarters of the GLA and the Mayor of London is at City Hall. The current Mayor of London is Sadiq Khan who was elected in 2016, replacing Boris Johnson, who served two terms. Health services in London are managed by the national government through the National Health Service, which is controlled and administered in London by a single NHS Strategic Health Authority called "NHS London". The 33 local authorities are the 32 London borough councils and the
Mayor of London Greater London Authority Act 1999 in 2000 as part of the reforms. The Mayor is elected by the supplementary vote method for a fixed term of four years, with elections taking place in May. As with most elected posts in the United Kingdom, there is a deposit, in this case of £10,000, which is returnable on the candidate's winning at least 5% of the first-choice votes cast. The most recent London mayoral election was held on 5 May 2016. The results were announced officially on 7 May at 00:30; British television news channel Sky News had announced Sadiq Khan as