A report into allegations of Russian interference in the 2016 Brexit referendum and other UK elections is at the centre of a political dispute as the country heads into the 2019 campaign.

The report, by the Intelligence and Security Committee, was handed to UK Prime Minister Boris Johnson on 17 October with the committee saying it would be published "imminently."

But the report has yet to be made public, and with the general election campaign looming, it will have to be published before Tuesday night or likely wait until after the 12 December vote.

The chairman of the committee, Dominic Grieve, told the BBC: "I cannot think of a reason why he (Johnson) should wish to prevent this report being published.

"It's very demoralizing for us when we find we put in months of work and at the end of it we're not getting an adequate response."

Asked if there is useful information in the report for voters in the upcoming election, Grieve said: "Yes I think there is. It's about information.

"It seems to us that this report is germane because we do know and I think it is widely accepted that the Russians have sought to interfere in other countries' democratic processes in the past."

Opposition Labour Party leader Jeremy Corbyn said the report should be released:  "I suspect that the reason it hasn't been published is because they're going to delay it past the dissolution of Parliament on Tuesday and then they can hide it away until some point in the future."

For the government, Chief Secretary to the Treasury Rishi Sunak, said that the report was not being delayed, but was going through the usual vetting process which always takes a few weeks.

The committee's three most recent reports have been published four months, one month and two weeks after being submitted to the prime minister.