THERESA May will come under fresh Brussels pressure today to be more specific about how much Britain is willing to pay for its divorce from the European Union as a leaked paper damned the UK Government’s Brexit performance as chaotic.

The Prime Minister is due to have talks with Donald Tusk, the European Council President, when she attends the EU’s Eastern Partnership Forum in the Belgian capital, and where she is expected to highlight the £50 million the UK is providing this year to the region to support projects like tax reform in Moldova and de-mining in Ukraine with a further £100m over the next five years to counter "disinformation" in the region.

Last week, Mr Tusk told Mrs May that the EU needed greater clarity on the terms of Britain's withdrawal - including the financial settlement - by early December if there was to be any chance of leaders giving the go-ahead for phase two of the Brexit negotiations to start at their next summit later in the month.

She also faced a demand from Leo Varadkar, the Irish Taoiseach, for a written guarantee that there would be no return to the "hard border" of the past between Northern Ireland and the Republic as the price of his support for the second phase of the negotiations to begin.

Since last week's EU gathering in Gothenburg, the Cabinet has met to discuss what they would be prepared to pay to settle the "divorce bill", with ministers reportedly agreeing to double the sum originally put on the table by Mrs May to around £40 billion.

However, the PM is unlikely to mention a specific figure to Mr Tusk but simply her and her colleagues’ willingness to up their offer but only on condition that talks on trade and transition start next month.

Downing Street declined to comment on the internal Irish Government paper obtained by RTE news, which is based on a compilation of political reports from Irish embassies across Europe between November 6 and 10.

It claims that Brexit was barely mentioned during a meeting between David Davis, the Brexit Secretary, and French ministers for defence and foreign affairs, something which was viewed as a wasted opportunity.

The paper states: “Despite having billed this in the media in advance as a meeting to ‘unblock’ French resistance, Davis hardly mentioned Brexit at all during the meeting, much to French surprise, focusing instead on foreign policy issues.”

In another meeting, a minister in the Czech Government described Boris Johnson, the Foreign Secretary, as "unimpressive" but noted that at least he had "avoided any gaffes" during a visit in September.

Tom Brake for the Liberal Democrats said the scathing assessments of British ministers showed they were “turning the UK into an international embarrassment” on Brexit.

Stephen Gethins, the SNP’s Europe spokesman, noted: “The report confirms the utter chaos commanding Whitehall and what we have known to be true for a long time; that this UK Government is simply not up to the job of protecting the UK’s economy, jobs and businesses if they continue to railroad ahead with their flawed EU plans.”