Burnham confirms Russia interfered in Brexit referendum

Andy Burnham arrived at Downing Street with a question that previous governments had sidestepped for a decade: Did Russia interfere in the Brexit referendum? The answer he received, he said this week, was unambiguous. Yes, it did.

Speaking on the podcast The Rest is Politics, Burnham described asking the question as one of his first acts as prime minister and receiving what he called a "clear answer" that Moscow had attempted to influence the 2016 vote. He did not say who provided that answer, what intelligence it rested on, or whether Russian efforts had actually changed the outcome. But the statement itself marked a sharp break from the position held by successive Conservative governments, which had maintained there was no credible evidence of successful Russian interference in the referendum.

The claim carries weight partly because of what came before it. In 2020, Parliament's intelligence and security committee published a damning assessment of how the government had handled the question. The cross-party panel found that ministers had failed to seek a proper accounting of Russian activities, despite documented evidence that Moscow had used state-backed media outlets and social media accounts to attempt influence over British politics. The committee noted that the government had never conducted a post-referendum assessment of Russian interference—a stark contrast to the thorough investigation the United States undertook after its own 2016 election. The committee's view was clear: whether a hostile state had tried to meddle in a democratic process mattered regardless of whether those efforts had succeeded.

Burnham framed the disclosure as part of a broader reckoning with foreign interference in European politics. He said Britain needed to be more transparent about hostile state attempts to disrupt its democratic processes, particularly as far-right movements gain ground across the continent. Last month, he had already addressed Russian information warfare during a speech to the UN General Assembly, citing evidence that Moscow had attempted to interfere with the 2019 general election. Now he was extending that acknowledgment backward to 2016.

During a recent visit to Berlin, Burnham discussed these threats with German Chancellor Friedrich Merz. The chancellor raised concerns about the far-right Alternative für Deutschland party and its links to Russia, including what Merz described as funding from Moscow. Burnham said he told Merz that Britain stood ready to support Germany in confronting the political threat it faced, and that disinformation flowing from Russia into German politics was a documented reality both countries needed to address.

The government is moving to institutionalize this awareness. It is establishing a National Centre for Information Defence designed to detect and disrupt hostile state information campaigns targeting British democracy. Downing Street announced it is also developing a new partnership with Germany to counter what officials call "hybrid threats"—hostile activities that endanger both countries' security and economic prosperity. A government spokesperson said national security remained the first duty of any administration, and that the UK would continue strengthening its defenses through the National Security Act, hardening critical infrastructure, and bolstering police and intelligence capabilities.

Burnham's acknowledgment of Russian interference in Brexit also comes as he has begun reopening questions about Britain's relationship with the European Union. Last month, he suggested his government would examine all options for the country's future ties with Brussels—a signal that the question of EU membership, settled by the 2016 referendum, may not be permanently closed.