The British Concession or Settlement was a foreign enclave (a "concession") in Shanghai within the Qing Empire which existed from around 1845 until its unification with the city's American area to form the Shanghai International Settlement in 1863.
The British occupied Shanghai during the First Opium War and it was opened to foreign trade by the terms of the Treaty of Nanking. The British settlement was established by the 1845 Land Regulations, undertaken on the initiative of the intendant Gong Mujiu. On 20 November 1846, a formal concession was established; this was expanded on 27 November 1848. After a proposal to make Shanghai an independent "free city" was rejected in 1862, the British area agreed to merge with the American on 21 September 1863 as the Shanghai International Settlement. This occurred in December of the same year.