Crispin Tickell

Sir Crispin Tickell (25 August 1930 – 25 January 2022) was a British politician, environmentalist, and academic. He was the Ambassador to Mexico between 1981 until 1983 and later the Permanent Representative to the United Nations between 1987 until 1990.
Tickell died on 25 January 2022 from pneumonia at a London hospital, aged 91.