Refusing to accept the reward offered for Tandy's capture, on 8 June 1803 the British government instead presented Turner with a Company in the Royal African Corps.
[2] Following the death of incumbent governor Charles MacCarthy in 1824 in the First Anglo-Ashanti War (1823-1831), Turner was commissioned as Captain-general and appointed as Governor-in-Chief of Sierra Leone and its dependencies (including the Gold Coast).
He arrived on the Cape Coast around the end of March 1825, along with 200 men of the Royal Africa Corps and 200 from the 2nd West India Regiment from Sierra Leone.
[3] In September 1825, Turner negotiated a treaty on behalf of the British government with the Sherbro king, Banka.
Both sides kept their end of the bargain, which was notable due to the fact that in the history of colonialism in West Africa, this was rare.