Alan Nunn May (sometimes Allan) (2 May 1911 – 12 January 2003) was a British physicist and a confessed and convicted Soviet spy who supplied secrets of British and American atomic research to the

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

Early life and education

May was the youngest of four children of Walter Frederick Nunn May, a

brass Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, but copper typically has the larger proportion, generally copper and zinc. I ...

founder, and Mary Annie, née Kendall. He was born in Bedruthan, Park Hill,

Moseley Moseley ( ') is an affluent suburb in south Birmingham, England, south of the city centre. It is located within the eponymous Moseley ward of the constituency of Birmingham Hall Green and Moseley (UK Parliament constituency), Hall Green and ...

Birmingham Birmingham ( ) is a City status in the United Kingdom, city and metropolitan borough in the metropolitan county of West Midlands (county), West Midlands, within the wider West Midlands (region), West Midlands region, in England. It is the Lis ...

, and educated at

King Edward's School, Birmingham King Edward's School (KES) is an independent school (UK), independent day school for boys in the British Public school (UK), public school tradition, located in Edgbaston, Birmingham. Founded by Edward VI of England, King Edward VI in 1552, it ...

.Cathcart, Brian
May, Alan Nunn (1911–2003)

Oxford Dictionary of National Biography The ''Dictionary of National Biography'' (''DNB'') is a standard work of reference on notable figures from History of the British Isles, British history, published since 1885. The updated ''Oxford Dictionary of National Biography'' (''ODNB'') ...

As a scholarship student at

Trinity Hall, Cambridge Trinity Hall (formally The College or Hall of the Holy Trinity in the University of Cambridge, colloquially "Tit Hall" ) is a Colleges of the University of Cambridge, constituent college of the University of Cambridge. Founded in 1350, it is th ...

, he achieved a first in physics, which led to

doctoral A doctorate (from Latin ''doctor'', meaning "teacher") or doctoral degree is a postgraduate academic degree awarded by universities and some other educational institutions, derived from the ancient formalism '' licentia docendi'' ("licence to teach ...

studies under Charles Ellis and lectureship at

King's College London King's College London (informally King's or KCL) is a public university, public research university in London, England. King's was established by royal charter in 1829 under the patronage of George IV of the United Kingdom, King George IV ...

Career

Early communist ties

May joined the

Communist Party of Great Britain The Communist Party of Great Britain (CPGB) was the largest communist organisation in Britain and was founded in 1920 through a merger of several smaller Marxist groups. Many miners joined the CPGB in the 1926 general strike. In 1930, the CPGB ...

in the 1930s and was active in the Association of Scientific Workers. The Cambridge Five spy ring member Donald Duart Maclean was also at Trinity Hall during an overlapping period.

World War II

During

, May initially worked on

radar Radar is a system that uses radio waves to determine the distance ('' ranging''), direction ( azimuth and elevation angles), and radial velocity of objects relative to the site. It is a radiodetermination method used to detect and track ...

Suffolk Suffolk ( ) is a ceremonial county in the East of England and East Anglia. It is bordered by Norfolk to the north, the North Sea to the east, Essex to the south, and Cambridgeshire to the west. Ipswich is the largest settlement and the county ...

and then with Cecil Powell in

Bristol Bristol () is a City status in the United Kingdom, cathedral city, unitary authority area and ceremonial county in South West England, the most populous city in the region. Built around the River Avon, Bristol, River Avon, it is bordered by t ...

on a project that attempted to use photographic methods to detect fast particles from

radioactive decay Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is conside ...

James Chadwick Sir James Chadwick (20 October 1891 – 24 July 1974) was an English nuclear physicist who received the Nobel Prize in Physics in 1935 for his discovery of the neutron. In 1941, he wrote the final draft of the MAUD Report, which inspired t ...

recruited him to a

Cambridge University The University of Cambridge is a Public university, public collegiate university, collegiate research university in Cambridge, England. Founded in 1209, the University of Cambridge is the List of oldest universities in continuous operation, wo ...

team working on a possible

heavy water Heavy water (deuterium oxide, , ) is a form of water (molecule), water in which hydrogen atoms are all deuterium ( or D, also known as ''heavy hydrogen'') rather than the common hydrogen-1 isotope (, also called ''protium'') that makes up most o ...

reactor. The team was part of the British

Tube Alloys Tube Alloys was the research and development programme authorised by the United Kingdom, with participation from Canada, to develop nuclear weapons during the Second World War. Starting before the Manhattan Project in the United States, the Bri ...

directorate that was merged into the American

Manhattan Project The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada. From 1942 to 1946, the ...

, the successful effort to create a

nuclear weapon A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear exp ...

. In January 1943, the Cambridge team, including May, was transferred to the Montreal Laboratory, which was building a reactor at

Chalk River Chalk River (2016 population: 1029) is a community located within the town of Laurentian Hills in Renfrew County, Ontario, Canada. It is located in the Upper Ottawa Valley along Highway 17 (Ontario), Highway 17 (Trans-Canada Highway), inland ...

, near

Ottawa Ottawa is the capital city of Canada. It is located in the southern Ontario, southern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Gatineau, Quebec, and forms the cor ...

Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. May's Canadian position ended in September 1945, and he returned to his lecturing post in London.

Soviet espionage

He had let his membership of the Communist Party lapse by 1940, but at Cambridge, when he saw an American report mentioning that Germany might be able to build a dirty bomb, he passed that on to a Soviet contact. In Canada, he was approached by Lieutenant Angelov of the

GRU Gru is a fictional character and the main protagonist of the ''Despicable Me'' film series. Gru or GRU may also refer to: Arts and entertainment * Gru (rapper), Serbian rapper * Gru, an antagonist in '' The Kine Saga'' Organizations Georgia (c ...

(Soviet

military intelligence Military intelligence is a military discipline that uses information collection and analysis List of intelligence gathering disciplines, approaches to provide guidance and direction to assist Commanding officer, commanders in decision making pr ...

) for information on atomic research. He continued his espionage by secretly supplying small samples of the isotopes

uranium-233 Uranium-233 ( or U-233) is a fissile isotope of uranium that is bred from thorium-232 as part of the thorium fuel cycle. Uranium-233 was investigated for use in nuclear weapons and as a Nuclear fuel, reactor fuel. It has been used successfully ...

and 235. The courier of the samples was not informed of the danger of radiation, developed painful lesions and needed regular blood transfusions for the rest of his life. May also borrowed library research documents on nuclear power, many from the US, for copying. The Canadian Royal Commission later investigated and states that he was paid with two bottles of

whisky Whisky or whiskey is a type of liquor made from Fermentation in food processing, fermented grain mashing, mash. Various grains (which may be Malting, malted) are used for different varieties, including barley, Maize, corn, rye, and wheat. Whisky ...

and at least C$700. May said that he accepted the money under protest and promptly burnt it. Angelov gave him details for a rendezvous with the GRU next to the

British Museum The British Museum is a Museum, public museum dedicated to human history, art and culture located in the Bloomsbury area of London. Its permanent collection of eight million works is the largest in the world. It documents the story of human cu ...

, in London, after his return.

Convicted of espionage

A GRU cipher clerk in Canada,

Igor Gouzenko Igor Sergeyevich Gouzenko (; ; January 26, 1919 – June 25, 1982) was a cipher clerk for the Soviet embassy to Canada in Ottawa, Ontario, and a lieutenant of the Soviet Main Intelligence Directorate (GRU). He defected on September 5, 1945, th ...

, defected to the West in

in September 1945, around the time that May's Canadian assignment ended. Gouzenko passed along copies of GRU documents implicating May, including details of the proposed meeting in London. May did not go to the British Museum meeting, but he was arrested in March 1946 and confessed to espionage. On 1 May 1946, he was sentenced to ten years' hard labour. He was released in late 1952, after serving six-and-a-half years. May refused to define his actions as treason and claimed in a statement after his release from prison that he believed that he had "acted rightly" as a spy because of being "wholeheartedly concerned with securing victory over Nazi Germany and Japan, and the furtherance of the development of the peaceful uses of atomic energy." Blacklisted from universities in Britain, May worked for a scientific instruments company and in 1961 he went to work at the

University of Ghana The University of Ghana is a public university located in Accra, Ghana. It is the oldest public university in the country. The university was founded in 1948 as the University College of the Gold Coast in the British colony of the Gold Coast ...

, where he conducted research in

solid-state physics Solid-state physics is the study of rigid matter, or solids, through methods such as solid-state chemistry, quantum mechanics, crystallography, electromagnetism, and metallurgy. It is the largest branch of condensed matter physics. Solid-state phy ...

and created a science museum.

Personal life and death

In 1953, May married Hilde Broda, the ex-wife of Engelbert Broda. They had a son and a stepson from Hilde's previous marriage. He returned to Cambridge in 1978 and died there in a hospital on 12 January 2003. Cause of death was

pneumonia Pneumonia is an Inflammation, inflammatory condition of the lung primarily affecting the small air sacs known as Pulmonary alveolus, alveoli. Symptoms typically include some combination of Cough#Classification, productive or dry cough, ches ...

and pulmonary disease. A 2002 statement, released after his death, confessed to his spying activities and detailed how he got embroiled with the Soviet Union, though his reasoning for passing along nuclear secrets was simply that he felt the Soviets "ought to be informed". It was passed to ''

The Guardian ''The Guardian'' is a British daily newspaper. It was founded in Manchester in 1821 as ''The Manchester Guardian'' and changed its name in 1959, followed by a move to London. Along with its sister paper, ''The Guardian Weekly'', ''The Guardi ...

'' newspaper in 2003 and had been dictated to a relative in late 2002.

Legacy

May's arrest and sentence in 1946 first showed publicly that the Soviet Union had obtained atomic secrets by espionage. His clearance by

MI5 MI5 ( Military Intelligence, Section 5), officially the Security Service, is the United Kingdom's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service (MI6), Gov ...

also led to American distrust of Britain, and the McMahon Act. He passed on information on atomic reactors, but unlike

Klaus Fuchs Klaus Emil Julius Fuchs (29 December 1911 – 28 January 1988) was a German theoretical physicist and atomic spy who supplied information from the American, British, and Canadian Manhattan Project to the Soviet Union during and shortly a ...

(who was arrested in 1950) he knew little of weapon design. May is a major character in the 2003 novel ''The Cloud Chamber'', by Clare George, a fictional account of Cambridge physicists in the 1930s which centres on the scientific excitement of the interwar years contrasted with the vexing moral questions faced by scientists during World War II. The main character is a fictional physicist and pacifist who studied and worked at Cambridge's Cavendish Laboratory with May before the war. George's acknowledged inspiration for the story was her grandfather, a real-life physicist whose true story follows several of the particulars of her character, Walter Dunnachie.

Notes

References

External links

Files at National Archives, London (released 2007)
''

The Times ''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...

'', 24 January 2003 * ttp://discovery.nationalarchives.gov.uk/details/r/C4201883 Central Criminal Court depositions – CRIM 1/1774 {{DEFAULTSORT:Nunn May, Alan World War II spies for the Soviet Union British people convicted of spying for the Soviet Union British spies for the Soviet Union English physicists British experimental physicists British metallurgists British nuclear physicists Semiconductor physicists 1911 births 2003 deaths Manhattan Project people Communist Party of Great Britain members Nuclear weapons program of the Soviet Union people People educated at King Edward's School, Birmingham Alumni of Trinity Hall, Cambridge Academics of King's College London People from Kings Norton People associated with the nuclear weapons programme of the United Kingdom British expatriates in Ghana