British Prime Minister Boris Johnson has prepared plans to legally stop any Brexit extension, the Daily Telegraph reported late on Sunday.

Johnson's advisers held a meeting on Sunday to counter the strategy to prevent the British parliament's attempts at enforcing a three-month Brexit extension if no new deal is agreed, the newspaper reported.

A plan under consideration would see Johnson sending a letter alongside the request to extend Article 50 setting out that the government does not want any delay after October 31, according to the report.

Separately, an ITV correspondent said British opposition lawmakers are due to request an emergency debate in parliament on Monday to try to force the government to publish a no-deal Brexit planning document and make Johnson adhere to law.

The correspondent said on Twitter he understood the lawmakers had agreed their action late on Sunday.

Opposition lawmakers are increasingly concerned that Johnson will try to ignore a bill, due to be signed into law on Monday, to force him to request a Brexit delay if parliament has not agreed to a deal or to leaving the European Union without an agreement by October 19.

Lawmakers are keen to see a document detailing the government's impact assessment of a so-called no-deal Brexit.

UK parliament will on Monday hold another vote on a motion on whether to hold an early election.

(With input from Reuters)