Shadow Brexit Secretary Keir Starmer will try to force a parliamentary vote on whether the government should publish the leaked Brexit impact assessment in full.

Labour will table a motion which would give MPs a binding vote.

Theresa May has refused to publish the analysis which was leaked to BuzzFeed this week.

The document suggested Britain will be worse off outside the EU in all modelled scenarios.

LONDON — Labour is set to force a binding House of Commons vote on whether the UK government should be made to publish the Brexit impact assessment report leaked to the press earlier this week.

Shadow Brexit Secretary Sir Keir Starmer plans to use the same parliamentary mechanism which last year forced Theresa May to hand over an earlier Brexit analysis to make her publish the leaked impact assessment.

The document, which was put together by civil servants this month and then leaked to Buzzfeed News, shows that Britain would see lower economic growth under every likely Brexit scenario modelled.

Labour, other opposition parties, and a number of Conservative backbenchers have already called on the government to publish the findings.

Prime Minister May on Tuesday refused to publish the report, on the grounds that it was an "incomplete draft document" which had not been signed off by Cabinet ministers.

Brexit minister Steve Baker later described the leak as "an attempt to undermine our exit from the European Union" but said the government would publish some "appropriate analysis" at the end of withdrawal negotiations in autumn of this year.

However, Labour will use an opposition day debate on Wednesday to try and force a binding vote on whether the analysis should be handed over immediately.

"Once again Labour has been forced to use an archaic parliamentary process to make ministers do the right thing," Starmer said on Tuesday evening.

"People voted to leave the European Union in part to give Parliament control about its own future. That means giving MPs the information they need to scrutinise the Government’s approach to Brexit.

"Ministers cannot keep sidelining Parliament to hide the deep divisions within their own party. They should accept this motion and allow the country to have an informed debate about its relationship with Europe after Brexit."

Starmer says government response to leaked analysis is "not good enough"

Government response to leaked Brexit analysis is "not good enough" - Shadow #Brexit Secretary Keir Starmer https://t.co/bNWvuTbUhI pic.twitter.com/7k0rwUWkS3 — BBC News (UK) (@BBCNews) January 30, 2018

The analysis, commissioned by the Department for Exiting the European Union, looked at the impact of Britain leaving with either a free trade agreement, a Norway-style single market deal, or a no-deal scenario.

Under all three scenarios, Britain would be worse off than if the country decided to remain in the European Union, according to the analysis, which was intended to be presented to May's Cabinet in private over the coming days.

It found that with no deal, UK economic growth would be 8% lower than remaining in the EU and with a free trade agreement it would be 5% lower.

Even under the 'softest' option of remaining inside the European Economic Area but leaving the EU, growth would be 2% lower than staying in.