Britain has no overall plan for Brexit and the strategy for leaving the European Union might not be agreed for six months due to divisions in Prime Minister Theresa May's government, according to a leaked memo seen by the media.
The leaked document, prepared for the Cabinet Office by a consultant, said government departments were working on more than 500 Brexit-related projects and might require an additional 30,000 civil servants.
May's office said it did not recognise the claims made in the memo.
"This is not a government report and we don't recognise the claims made in it," a spokesman for May's office said. "We are focused on getting on with the job of delivering Brexit and making a success of it."
Titled "Brexit Update" and dated November 7, the memo criticises May for her tendency of "drawing in decisions and details to settle the matter herself.
It said there was no normal Brexit methodology due to pastoral divisions with Foreign Secretary Boris Johnson, Trade Minister Liam Fox and Brexit Minister David Davis on one side and fund serve Philip Hammond and Business Secretary Greg Clark on the other.
The report likewise says that "significant players" in industry were probably going to "point a firearm at government's head" to secure confirmations like that given to carmaker Nissan that it would not experience the ill effects of Brexit.
May has guaranteed to trigger Article 50 of the Lisbon Treaty, which commences two years of converses with leave the EU, before the end of March however she has so far given minimal away about her arrangements for Britain's future association with the coalition.