Singapore became independent from the UK in 1963.
Singapore . It gained independence from the UK in 1963 by federating with other former British territories to form Malaysia , but separated two years later over ideological differences , becoming a sovereign nation in 1965 . The Singapore Act 1966 ( 1966 c. 29 ) was an Act of the Parliament of the United Kingdom that admitted Singapore as a sovereign state into the Commonwealth of Nations with retroactive effect from 9 August 1965 , being the date on which Singapore became an sovereign state separate from and independent of Malaysia within the Commonwealth .