On 7 June 1823, John Crawfurd signed a second treaty with the Sultan and Temenggong, which extended British possession to most of the island. The Sultan and Temenggong traded most of their administrative rights of the island, including the collection of port taxes for lifelong monthly payments of $1500 and $800 respectively. This agreement brought the island under the British Law, with the provision that it would take into account Malay customs, traditions and religion. Raffles replaced Farquhar with John Crawfurd, an efficient and frugal administrator, as the new governor. In October 1823, Raffles departed for Britain and would never return to Singapore as he died in 1826, at the age of 44. In 1824, Singapore was ceded in perpetuity to the East India Company by the Sultan.
when did singapore became part of the british empire
7 June 1823