Sir Philip Stuart Milner-Barry (20 September 1906 – 25 March 1995) was a British
chess
Chess is a board game for two players. It is an abstract strategy game that involves Perfect information, no hidden information and no elements of game of chance, chance. It is played on a square chessboard, board consisting of 64 squares arran ...
player, chess writer, World War II
cryptologist, and
civil servant
The civil service is a collective term for a sector of government composed mainly of career civil service personnel hired rather than elected, whose institutional tenure typically survives transitions of political leadership. A civil service offic ...
. He represented England in chess before and after World War II.
During World War II he worked at
Bletchley Park
Bletchley Park is an English country house and Bletchley Park estate, estate in Bletchley, Milton Keynes (Buckinghamshire), that became the principal centre of Allies of World War II, Allied World War II cryptography, code-breaking during the S ...
, from autumn 1943 heading "
Hut 6", the section responsible for
decrypting German Army and Air Force messages which had been enciphered on the
Enigma machine
The Enigma machine is a cipher device developed and used in the early- to mid-20th century to protect commercial, diplomatic, and military communication. It was employed extensively by Nazi Germany during World War II, in all branches of the W ...
. He was one of four leading cryptologists at Bletchley Park to petition then-
Prime Minister
A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
Winston Churchill
Sir Winston Leonard Spencer Churchill (30 November 1874 – 24 January 1965) was a British statesman, military officer, and writer who was Prime Minister of the United Kingdom from 1940 to 1945 (Winston Churchill in the Second World War, ...
for more resources for their work.
After the war he worked in the
Treasury
A treasury is either
*A government department related to finance and taxation, a finance ministry; in a business context, corporate treasury.
*A place or location where treasure, such as currency or precious items are kept. These can be ...
, and later administered the
British honours system
In the United Kingdom and the British Overseas Territories, personal bravery, achievement, or service are rewarded with honours. The honours system consists of three types of award:
*Honours are used to recognise merit in terms of achievement a ...
. In chess, he represented England in international tournaments, and lent his name to four
opening variations.
Early life and education
Born in
Hendon
Hendon is an urban area in the London Borough of Barnet, northwest London northwest of Charing Cross. Hendon was an ancient Manorialism, manor and parish in the county of Middlesex and a former borough, the Municipal Borough of Hendon; it has ...
, London, Philip Stuart was the second of six children to a Professor of German and Teutonic Philology at the University College of North Wales, Edward Leopold Milner-Barry, who died from heart failure in 1917,
and his wife, Edith Mary.
[Ralph Erskine, "Barry, Sir (Philip) Stuart Milner- (1906–1995)" in the ]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'') ...
, 2004["Sir Stuart Milner-Barry – Obituary", ''The Times'', 28 March 1995] His grandfather was
William Besant, a mathematical fellow of
St John's College, Cambridge
St John's College, formally the College of St John the Evangelist in the University of Cambridge, is a Colleges of the University of Cambridge, constituent college of the University of Cambridge, founded by the House of Tudor, Tudor matriarch L ...
. His older sister,
Alda Milner-Barry, worked for
MI1b during
World War One and went on to be Professor of German at
University College Galway
The University of Galway () is a public university, public research university located in the city of Galway, Republic of Ireland, Ireland.
The university was founded in 1845 as "Queen's College, Galway". It was known as "University College, Ga ...
and vice-principal of
Newnham College, Cambridge.
A talented chess player, Milner-Barry won the first British Boys' Championship in 1923.
[William Hartston]
"Obituary: Sir Stuart Milner-Barry"
The Independent
''The Independent'' is a British online newspaper. It was established in 1986 as a national morning printed paper. Nicknamed the ''Indy'', it began as a broadsheet and changed to tabloid format in 2003. The last printed edition was publis ...
, 29 March 1995 He was a pupil at
Cheltenham College, and won a scholarship to
Trinity College,
Cambridge
Cambridge ( ) is a List of cities in the United Kingdom, city and non-metropolitan district in the county of Cambridgeshire, England. It is the county town of Cambridgeshire and is located on the River Cam, north of London. As of the 2021 Unit ...
, where he obtained firsts in
classics
Classics, also classical studies or Ancient Greek and Roman studies, is the study of classical antiquity. In the Western world, ''classics'' traditionally refers to the study of Ancient Greek literature, Ancient Greek and Roman literature and ...
and moral sciences.
He represented Cambridge in chess. At Cambridge, he befriended another chess player,
C.H.O'D. (Hugh) Alexander, and composed a number of
chess puzzles.
[William Hartston]
"Chess"
''The Independent
''The Independent'' is a British online newspaper. It was established in 1986 as a national morning printed paper. Nicknamed the ''Indy'', it began as a broadsheet and changed to tabloid format in 2003. The last printed edition was publis ...
'', 30 March 1995 Between 1929 and 1938 he was a city
stockbroker
A stockbroker is an individual or company that buys and sells stocks and other investments for a financial market participant in return for a commission, markup, or fee. In most countries they are regulated as a broker or broker-dealer and ...
, although he was unhappy with the work.
From 1938, he was the chess correspondent for ''
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 ...
'', succeeded in 1945 by
Harry Golombek.
Early chess contributions
He made his debut in international-class chess at the strong London 1932 tournament, which World Champion
Alexander Alekhine won. Milner-Barry's best results in international competition were achieved in three straight years at the
Margate
Margate is a seaside resort, seaside town in the Thanet District of Kent, England. It is located on the north coast of Kent and covers an area of long, north-east of Canterbury and includes Cliftonville, Garlinge, Palm Bay, UK, Palm Bay and W ...
tournaments from 1937 to 1939, and at
Hastings
Hastings ( ) is a seaside town and Borough status in the United Kingdom, borough in East Sussex on the south coast of England,
east of Lewes and south east of London. The town gives its name to the Battle of Hastings, which took place to th ...
1938. In all four events he finished just above the middle against strong fields, with performance ratings (as calculated by
Chessmetrics) between 2538 and 2565. This places him at a solid
Grandmaster standard, although he never received this title. He reached as high as No. 65 in the world between June and August 1941, according to Chessmetrics, which ranks historical chess performances retrospectively, using modern algorithms.
He represented England in chess, and played in the international
Chess Olympiad
The Chess Olympiad is a biennial chess tournament in which teams representing nations of the world compete. FIDE organises the tournament and selects the host nation. Amidst the COVID-19 pandemic, FIDE held an Online Chess Olympiad in FIDE Onli ...
s of
1937 and
1939. The latter tournament, held in
Buenos Aires
Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...
,
Argentina
Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...
, coincided with Britain's declaration of war on Germany in September 1939. Milner-Barry, with teammates who included Hugh Alexander (at that time the
British chess champion) and Harry Golombek, abandoned the tournament unfinished, and returned to Britain. His full Olympiad results are listed later in the article.
Bletchley Park

Upon their return, all three soon joined the
Government Code and Cypher School at
Bletchley Park
Bletchley Park is an English country house and Bletchley Park estate, estate in Bletchley, Milton Keynes (Buckinghamshire), that became the principal centre of Allies of World War II, Allied World War II cryptography, code-breaking during the S ...
. Milner-Barry was recruited by mathematician
Gordon Welchman
William Gordon Welchman OBE (15 June 1906 – 8 October 1985) was an English mathematician. During World War II, he worked at Britain's secret decryption centre at Bletchley Park, where he was one of the most important contributors. In 1948, a ...
, who had been his contemporary at Trinity College;
in turn Milner-Barry recruited
Hugh Alexander. Arriving in early 1940, he joined Welchman's "
Hut 6" section, whose task was to solve the
Enigma cipher machine as used by the
German Army
The German Army (, 'army') is the land component of the armed forces of Federal Republic of Germany, Germany. The present-day German Army was founded in 1955 as part of the newly formed West German together with the German Navy, ''Marine'' (G ...
and
Air Force
An air force in the broadest sense is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army aviati ...
.
In 1993, Milner-Barry wrote that "to this day I could not claim that I fully understood how the machine worked, let alone what was involved in the problems of breaking and reading the Enigma cipher". Nonetheless, with his knowledge of the German language, he made a study of the decrypts and found that they contained stereotyped patterns and forms of address that could be exploited as "
cribs" – reliable guesses for the plain language message that matched a given piece of encrypted text. Finding reliable cribs was a critical task for Hut 6, as Enigma was broken primarily with the aid of "
bombe
The bombe () was an Electromechanics, electro-mechanical device used by British cryptologists to help decipher German Enigma machine, Enigma-machine-encrypted secret messages during World War II. The United States Navy, US Navy and United Sta ...
s", large electromechanical machines which automatically searched for parts of the correct settings. Bombes were reliant on a suitable crib in order to succeed. In autumn 1940, Milner-Barry was put in charge of the "Crib Room".
He was
billet
In European militaries, a billet is a living-quarters to which a soldier is assigned to sleep. In American usage, it refers to a specific personnel position, assignment, or duty station to which a soldier can be assigned. Historically, a billet w ...
ed with Alexander, who was working in
Hut 8, the counterpart to Hut 6 working on German Naval Enigma. Their close friendship let them easily resolve the competing needs of their sections for the limited available
bombe
The bombe () was an Electromechanics, electro-mechanical device used by British cryptologists to help decipher German Enigma machine, Enigma-machine-encrypted secret messages during World War II. The United States Navy, US Navy and United Sta ...
time. By October 1941, he was deputy head of Hut 6 under Welchman.
[David Kahn, ''Seizing the Enigma'', 1991, pp. 186–88] At this time, Bletchley Park was experiencing a shortage of clerical staff which was delaying the work on Enigma, and the management of GCCS appeared unable to obtain the resources needed. This affected both Hut 6 and Hut 8, which was run by mathematician
Alan Turing
Alan Mathison Turing (; 23 June 1912 – 7 June 1954) was an English mathematician, computer scientist, logician, cryptanalyst, philosopher and theoretical biologist. He was highly influential in the development of theoretical computer ...
with Hugh Alexander as his deputy. Together, Welchman, Milner-Barry, Turing and Alexander bypassed the
chain of command and wrote a memorandum directly to the
Prime Minister
A prime minister or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. A prime minister is not the head of state, but r ...
,
Winston Churchill
Sir Winston Leonard Spencer Churchill (30 November 1874 – 24 January 1965) was a British statesman, military officer, and writer who was Prime Minister of the United Kingdom from 1940 to 1945 (Winston Churchill in the Second World War, ...
, outlining their difficulties.
It fell to Milner-Barry to deliver the message to
10 Downing Street
10 Downing Street in London is the official residence and office of the Prime Minister of the United Kingdom, prime minister of the United Kingdom. Colloquially known as Number 10, the building is located in Downing Street, off Whitehall in th ...
in person, on 21 October 1941. The next day, Churchill responded, "Action this day: Make sure they have all they want on extreme priority and report to me that this has been done." Within a month their needs were being met.
In autumn 1943, Milner-Barry took over as head of
Hut 6, which by that time had grown to over 450 staff, Welchman having been appointed the Assistant Director of Mechanisation at Bletchley Park.
He remained in charge until the end of the war, presiding over a number of technical challenges presented by the introduction of extra security devices to the German Enigma, including the
Enigma Uhr and a rewireable
"reflector" rotor.
His entry in the
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'') ...
notes that, "although he increasingly felt that Hut 6 was on the verge of losing the ability to decode Enigma, it held on until the end of the war, and this was due in no small part to his gifted leadership."
The official history of Hut 6, written immediately after the end of World War II, comments on his early "most vital technical achievement" in finding cribs, and on his "administrative and diplomatic talents" in his later role as head of the section.
After World War II
Milner-Barry joined the
Treasury
A treasury is either
*A government department related to finance and taxation, a finance ministry; in a business context, corporate treasury.
*A place or location where treasure, such as currency or precious items are kept. These can be ...
in 1945 with the grade of
Principal. In 1947, he married Thelma Tennant Wells, with whom he had a son and two daughters.
The same year, he was promoted to
Assistant Secretary, and
Under-secretary in 1954.
Apart from a stint in the
Ministry of Health from 1958 to 1960,
he remained with the Treasury until 1966, when, aged 60, he had reached the then normal retirement age for the civil service.
He was persuaded instead to carry on as a ceremonial officer administering the
honours system. In this role, he supported the
knighthoods of
P. G. Wodehouse and
Noël Coward
Sir Noël Peirce Coward (16 December 189926 March 1973) was an English playwright, composer, director, actor, and singer, known for his wit, flamboyance, and what ''Time (magazine), Time'' called "a sense of personal style, a combination of c ...
. Milner-Barry eventually retired in 1977.
He was appointed
OBE in 1946 for his work in World War II,
CB in 1962, and
KCVO in 1975.
Later chess contributions
He had also continued to play chess, competing in the
10th Chess Olympiad and
12th Chess Olympiad in 1952 and 1956. The 1956 Olympiad trip to Moscow was risky, since Britain and the
USSR
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 ...
, which had been allies during World War II, were by then locked into the
Cold War
The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
, and Milner-Barry's wartime codebreaking knowledge would have been of great interest to the Soviets; the very fact that Britain had broken German codes on a massive scale was kept secret until 1974, when
Frederick Winterbotham's book ''The Ultra Secret'' was published. He placed second in the British Chess Championship at Hastings 1953 (finishing behind only
Daniel Yanofsky), with a score of 8/11; this would be his best result in British Championships.
He was president of the
British Chess Federation between 1970 and 1973, competed in the British Championship as late as 1978,
and was still competing in club and county-level tournaments and matches into his 80s.
His obituary in ''
The Independent
''The Independent'' is a British online newspaper. It was established in 1986 as a national morning printed paper. Nicknamed the ''Indy'', it began as a broadsheet and changed to tabloid format in 2003. The last printed edition was publis ...
'' recalled his "savagely effective attacking style, honed to perfection through a series of 'serious friendly games' against his old rival Hugh Alexander".
In 1972,
George Koltanowski wrote that, "his style was very pleasing to spectators because he was always looking for dangerous continuations and quite often he found them!" His name is associated with four
chess opening
The opening is the initial stage of a chess game. It usually consists of established Chess_theory#Opening_theory, theory. The other phases are the chess middlegame, middlegame and the chess endgame, endgame. Many opening sequences, known as ''op ...
variations:
*
Milner-Barry Variation of the
Nimzo-Indian Defence (''
ECO'' E33): 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6
* Milner-Barry Gambit in the
French Defence
The French Defence is a chess opening characterised by the moves:
:1. e4 e6
This is most commonly followed by 2.d4 d5. Black usually plays ...c5 soon after, attacking White's and gaining on the . The French has a reputation for solidity ...
(''ECO'' C02): 1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 cxd4 7.cxd4 Bd7 8.0-0!? Nxd4 9.Nxd4 Qxd4 10.Nc3
* Milner-Barry Variation in the
Petroff Defence (''ECO'' C42): 1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.d3 Nf6 7.Bg5 Nbd7
* Milner-Barry Variation in the
King's Gambit (''ECO'' C31): 1.e4 e5 2.f4 d5 3.Nc3
Olympiad results
Milner-Barry's detailed results while competing for England in chess Olympiads are as follows:
*
Stockholm 1937: board 3, 3/9 (+2−5=2)
*
Buenos Aires 1939: board 3, 4/5 (+3−0=2)
*
Helsinki 1952: board 3, 5½/12 (+2−3=7)
*
Moscow 1956: board 4, 6/12 (+5−5=2)
Overall, he scored (+12−13=13), 18½/38, for 48.7 per cent.
Final years
In 1985, Milner-Barry fiercely defended the reputation of Gordon Welchman, who had come under posthumous criticism for publishing details about the wartime work of Hut 6.
In 1992, echoing his wartime visit to 10 Downing Street, Milner-Barry was a member of a party who delivered a petition to the Prime Minister calling on the government to help preserve Bletchley Park, which was then under threat from demolition.
He died on 25 March 1995 in
Lewisham Hospital, London.
A
memorial service was held for him at
Westminster Abbey
Westminster Abbey, formally titled the Collegiate Church of Saint Peter at Westminster, is an Anglican church in the City of Westminster, London, England. Since 1066, it has been the location of the coronations of 40 English and British m ...
on 15 June.
["Sir Stuart Milner-Barry – Memorial service", ]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 ...
, 16 June 1995
There is a conference room named after him
[ . London: Civil Service Club ] at the
Civil Service Club, 13 – 15 Great Scotland Yard, London SW1A 2HJ.
References
External links
The Papers of Sir (Philip) Stuart Milner-Barryheld at
Churchill Archives Centre
*
Milner-Barry and his AttackWest London Chess Club Gazette February 1946(PDF)
Remembering Sir Stuart Milner-Barry
{{DEFAULTSORT:Milner-Barry, Stuart
1906 births
1995 deaths
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