Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,552 pages of information and 228,008 images on early companies, their products and the people who designed and built them.

John Allen Clark

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Sir John Allen Clark, (1926–2001), industrialist, was born on 14 February 1926 at 109 Gloucester Terrace, Paddington, London, the oldest child of Sir Allen George Clark and his wife, Jocelyne Anina Marie Louise (b. 1902/3)

He was educated at Harrow School, and after joining the Royal Naval Volunteer Reserve in 1944 he spent one term at Trinity College, Cambridge

After demobilization in 1947 he did a business apprenticeship with Metropolitan-Vickers, and worked for Ford in Dagenham

On 29 April 1952 he married Deirdre Kathleen Waterhouse and they had one son and one daughter. The marriage was dissolved in 1962, and on 22 May 1970 he married Olivia Ann Pratt. There were one daughter and twin sons from this second marriage.

Clark joined Plessey Co in 1949 as assistant to the general manager of Plessey International Ltd and moved to Ireland in 1950 as director and general manager of Plessey (Ireland) Ltd.

After holding managerial posts in other Plessey subsidiary companies, he joined the board of the Plessey Company Ltd in 1953.

He became general manager of the Plessey Components Group in 1957.

1962 With his brother, Michael he took over the running of Plessey following their father's death.

He died in Barbados on 3 December 2001 and was survived by his wife.

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