Jack Stewart-Clark

Sir John Stewart-Clark, 3rd Baronet (17 September 1929 – 22 June 2026) was a British businessman and Conservative and Unionist Party politician who served as a Member of the European Parliament from 1979 to 1999, including as its Vice-President from 1992 to 1997.

Early life and education Born in Dalmeny, Scotland, Stewart-Clark was the son of Sir Stewart Stewart-Clark, 2nd Baronet, and Jane Pamela Clarke. He was educated at Eton College and Balliol College, Oxford, where he was encouraged by his future employer, J. & P. Coats Ltd., to study history, and later at Harvard Business School,

Stewart-Clark was involved with the charity Passion Trust. In 2016 he gained approval from the Vatican to take a Passion Play to a prison in Milan. Stewart-Clark has said: "[Prisoners] can become redeemed in prison, even if you’re never getting out". Archbishop Leo Cushley was reported to be supportive of the project.

He was also a trustee of the substance abuse group Mentor Foundation, honorary president of the Queensferry lifeboat station and an ambassador for the Edinburgh Festival since 1947. Sir Jack said "We absolutely have to stay...It would be dreadful if we didn’t. It’s a plunge into the unknown."

Personal life and death During a business posting to the Netherlands, Stewart-Clark met Lydia Frederika Loudon (d. 2025), whom he married in 1958. They had four daughters and one son. Lydia was the niece of the Dutch businessman John Hugo Loudon, great-niece of the Dutch politician John Loudon and great-granddaughter of the Dutch colonial governor James Loudon.

He succeeded to the baronetcy in 1971 upon the death of his father. His was a distant relative of the Conservative politician Alan Clark.

Stewart-Clark died on 22 June 2026, at the age of 96. He was succeeded by his son Sir Alexander Dudley Stewart-Clark, 4th Baronet.