Peter William Unwin CMG (born 20 May 1932) is a British writer and retired diplomat.
On 5 February 1955, as part of National Service, Unwin was commissioned into the Intelligence Corps, British Army, as a second lieutenant.
[1] On 25 September 1956, he was transferred to the Army Emergency Reserve of Officers.
[3] On 2 September 1956, Unwin had joined the Foreign Service as an Officer in Branch A.
Having retired from the Diplomatic Service, he is an author and occasional contributor to The Times.