Both Berbice and the United Colony of Demerara and Essequibo were under British control from 1796 to 1802. By means of the Treaty of Amiens, both were returned to Dutch control. Peace was short-lived, however. The war between Britain and France resumed in less than a year, and in 1803 the United Colony and Berbice were seized once more by British troops. At the London Convention of 1814, both colonies were formally ceded to Britain. In 1831, Berbice and the United Colony of Demerara and Essequibo were unified as British Guiana. The colony would remain under British control until independence in 1966.