British Foreign Secretary Dominic Raab said in a written statement to lawmakers that it is “almost certain” that the unnamed individuals "sought to interfere" in the December 2019 election.
Britain has said on Thursday that Russia tried to interfere in its 2019 general election by whipping up a furore online over illicitly acquired sensitive documents about a planned free trade agreement with Washington.
Russia, which has also faced allegations of trying to influence the outcome of elections in the United States and France, described the allegation as "so foggy and contradictory that it's practically impossible to understand it."
British Foreign Minister Dominic Raab said a government investigation had found that Russia tried repeatedly to meddle in last December's election won by the Conservative Party, though the ultimate aim was not immediately published.
"It is almost certain that Russian actors sought to interfere in the 2019 General Election through the online amplification of illicitly acquired and leaked Government documents," Raab said in a statement.
"Sensitive government documents relating to the UK-US Free Trade Agreement were illicitly acquired before the 2019 General Election and disseminated online via the social media platform Reddit."
Fodder for Corbyn
The documents were used by the then-leader of the main opposition Labour Party, Jeremy Corbyn, to back up his claims that the Conservative government was preparing to “sell off” the National Health Service.
The papers were believed to have appeared online some months earlier but gained little traction until picked up by the Labour campaign and highlighted at a news conference in November. After they were revealed, online discussion site Reddit said its own investigation linked their appearance to a previous Russian disinformation campaign.
The investigation found that when these documents made little impact, further attempts were made to promote illicitly obtained material online before the election, Raab said.
Prime Minister Boris Johnson won a landslide victory in the election against opposition Labour candidate Jeremy Corbyn.
"Whilst there is no evidence of a broad-spectrum Russian campaign against the General Election, any attempt to interfere in our democratic processes is completely unacceptable," Raab said.
"The government reserves the right to respond with appropriate measures in the future."
Russia denies accusations
Russian Foreign Ministry spokeswoman Maria Zakharova slammed Raab’s statement as “vague and contradictory” and called on the UK to “produce facts” supporting the allegations.
“On the one hand, there is no proof, on the other, some possible retaliatory measures are mentioned," Zakharova said at her weekly media briefing. "These are mutually exclusive things.”
President Vladimir Putin, a former KGB officer, has laughed off similar allegations in the past.
Report on Russian influence due
Raab made his comments hours after parliament's intelligence and security committee said it would publish a long-delayed report into Russian influence in British politics.
A spokesman for Johnson said it was "nonsense" to suggest the government had issued the statement to detract from that report.
Relations between London and Moscow hit a post-Cold War low in 2018 when Britain blamed Moscow for trying to kill former double agent Sergei Skripal with a Soviet-developed nerve agent on British soil. Russia denied it was to blame.
US intelligence believes Russia also sought to intervene in the 2016 presidential election to help eventual winner Donald Trump, and French President Emmanuel Macron has scolded Russia for spreading fake news about him during a 2017 election.