Biography.guide
Home › People › Cryptographer › Leonard James Hooper
Portrait of Leonard James Hooper

Leonard James Hooper

1914 – 1994

GCHQ director

CryptographerEngineer
Don't just read it — keep itBiographies to ownE-book · Audio · Video From $7 →

About Leonard James Hooper

Lived 1914 – 1994 (aged 79). Leonard James Hooper was a cryptographer and engineer.

Sir Leonard James (Joe) Hooper (23 July 1914 – 19 February 1994) was director of the British signals intelligence agency, GCHQ, a post he held from 1965 to 1973.

Career Educated at Alleyn's School in South East London and Worcester College, Oxford, Hooper joined the Government Code and Cypher School in August 1938, and was based at Bletchley Park during World War II. He stayed on with the organisation after the war, which became GCHQ, and, after five years as deputy director, served as its director from January 1965 to November 1973.

In the mid-1970s he served as the Intelligence Co-ordinator in the Cabinet Office, where he acted as a general overseer of the UK Intelligence Community.

Biography shop

Don’t just read it —
keep it.

Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.

  • E-book
  • Audio
  • Video
Browse the shop — from $7

Instant download · yours to keep · every purchase keeps this site free

Important facts

Birth century
Occupation
Cryptographer, engineer
Education
Worcester College, Alleyn's School
Positions held
Director of the Government Communications Headquarters
Awards
Commander of the Order of the British Empire; Knight Commander of the Order of St Michael and St George
Also known as
Sir Leonard James (Joe) Hooper

Contemporaries

People whose lives overlapped Leonard James Hooper's

Frequently asked questions

Who was Leonard James Hooper?

GCHQ director

When was Leonard James Hooper born?

Leonard James Hooper was born on 23 July 1914.

When did Leonard James Hooper die?

Leonard James Hooper died on 19 February 1994.

What was Leonard James Hooper's occupation?

Leonard James Hooper was a cryptographer and engineer.

Sources & further reading

· Wikipedia: Leonard James Hooper

· Wikidata: Q6525427

· DBpedia: Leonard Hooper

Cite this page

APA: Biography.guide. (2026). Leonard James Hooper. https://biography.guide/leonard-james-hooper/

MLA: "Leonard James Hooper." Biography.guide, https://biography.guide/leonard-james-hooper/.

Chicago: "Leonard James Hooper." Biography.guide. https://biography.guide/leonard-james-hooper/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

Page generated 2026-09-27 05:05 UTC