The petition is the most supported proposal in the history of the House of Commons and the government's e-petitions website | Niklas Halle'n/AFP via Getty Images UK government rejects ‘Revoke Article 50’ petition The petition to cancel Brexit got almost 6M signatures, the highest in the House of Commons’ history.

The U.K. government rejected a petition signed by more than 5.8 million people calling for the Article 50 letter — notifying the European Union of Britain's intention to leave the bloc — to be revoked.

"This government will not revoke Article 50. We will honour the result of the 2016 referendum and work with parliament to deliver a deal that ensures we leave the European Union," the Department for Exiting the EU said in a statement.

It said canceling Brexit and staying in the EU "would undermine both our democracy and the trust that millions of voters have placed in government."

The department acknowledged "the considerable number of people" who signed the petition, but noted that "close to three-quarters of the electorate took part in the 2016 referendum, trusting that the result would be respected."

It noted that 17.4 million people voted Leave in the referendum "providing the biggest democratic mandate for any course of action ever directed" at the government, and in the 2017 general election more than 80 percent of votes were cast for parties committed to upholding the referendum result.

"This government stands by this commitment. Revoking Article 50 would break the promises made by government to the British people, disrespect the clear instruction from a democratic vote, and in turn, reduce confidence in our democracy," the statement added.

MPs are due to debate the petition in the House of Commons' secondary chamber on Monday after it passed a threshold of 100,000 signatures. With nearly 6 million signatures, the petition is the most supported proposal in the history of the House of Commons and the government's e-petitions website, the Guardian reported.