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Zinoviev letter

1924Contested

Four days before Britain's 1924 general election, the Daily Mail published a letter supposedly from Comintern chief Grigory Zinoviev urging British communists to prepare revolution. Labour lost heavily, and the letter is now widely judged a forgery.

The story

On October 25, 1924, four days before a British general election, the Daily Mail published a letter said to be from Grigory Zinoviev, head of the Communist International in Moscow. It instructed the Communist Party of Great Britain to stir up sedition in the armed forces and to support the Labour government's new treaties with the Soviet Union as a step toward revolution. British intelligence had obtained a copy, and the Foreign Office issued a protest to the Soviet government, which seemed to confirm the letter as genuine. Ramsay MacDonald's minority Labour government, already under attack for recognizing the Soviet Union, lost the election on October 29 to the Conservatives in a landslide.

Zinoviev and the Soviet government denied writing it from the start. In 1999 the Foreign Office's chief historian, Gill Bennett, reviewed the British files and concluded it was almost certainly a forgery, probably produced by anti-Bolshevik Russian emigres, and that it had likely been leaked to the press by people connected with British intelligence and the Conservative Party. Historians still argue about how much the letter changed the result, since the Liberal vote collapsed for other reasons, but Labour supporters long saw it as an establishment plot against their first government.

Why it mattered

  • The episode fed a lasting belief on the British left that the security services had worked against Labour, a suspicion revived in later decades.
  • Bennett's 1999 study became a model for governments reviewing their own secret files on politically sensitive affairs.
  • The letter became an early case study in election-eve disinformation, often cited in modern debates about interference in democratic votes.

Sources

  1. Zinoviev Letter Encyclopedia.com
  2. The Zinoviev Letter: The Conspiracy that Never Dies The Spectator
  3. Fraud and forgery The Spectator

Drafted by AI (Claude) from the sources above and checked against them by AI; no historian has reviewed this page. Spot a mistake? Suggest a correction. How pages are made

Contested history

Consensus: A letter attributed to Comintern head Grigory Zinoviev was published four days before Britain's 1924 election, damaging the Labour government. An official review of British files in 1999 concluded it was almost certainly a forgery leaked through intelligence and Conservative circles.

Zinoviev wrote the letterDebunked
No original exists, Zinoviev denied it at once, and the Foreign Office historian who reviewed the files in 1999 concluded it was almost certainly forged, most likely by Russian emigres.
Where this claim comes from, and its rebuttals
People linked to British intelligence leaked it to influence the electionEstablished
Bennett's review found that copies circulated from intelligence officers and their contacts to the Conservative Party and the Daily Mail, though she found no evidence of an organized MI6 conspiracy.
Read this view
The letter cost Labour the electionDebated
Labour actually gained votes in 1924; the Conservatives won mainly because the Liberal vote collapsed. Some historians think the letter mattered at the margins, others that the result was largely settled already.
Read this view

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