London/Brussels: British Prime Minister Theresa May’s officials are planning to rush her Brexit deal through Parliament to stave off a rebellion from her own party, Bloomberg reported on Thursday.

May’s team want the final withdrawal agreement ratified by lawmakers within two weeks of signing the terms of the divorce in Brussels, Bloomberg said citing people familiar with the matter.

Under that timetable, members of Parliament would vote on whether to accept or reject the divorce treaty by the beginning of December, sources told Bloomberg.

May appealed to her Conservative Party on Wednesday to unite behind her plan to leave the European Union, warning critics their arguments could put Brexit in jeopardy.

With just six months before Britain is due to exit the EU, she has so far weathered the Brexit storm, shrugging off a barnstorming speech by her ex-foreign minister Boris Johnson that did little to hide his leadership ambitions.

Meanwhile, Ireland’s Prime Minister Leo Varadkar arrived in Brussels to meet European Union officials on Thursday as Brexit talks enter a frenzied fortnight designed to produce a divorce deal with Britain and a blueprint for future ties.

The Brexit countdown begins with Varadkar meeting EU leaders’ chairman Donald Tusk and the bloc’s Brexit negotiator Michel Barnier later on Thursday.

Barnier will on Friday meet politicians from Northern Ireland where the Democratic Unionist Party (DUP), on which British Prime Minister Theresa May relies to govern, is key to sealing any agreement to end Britain’s four decades in the bloc.

“It will be long hours and it may get messy but there will be a deal. The cost of no-deal is just too big,” said a senior EU diplomat of the talks, aimed at agreeing a fix to the Irish border in time for an October 17-18 EU summit and then the outline of post-Brexit ties by another one on November 17-18.

Both sides are readying concessions and will exchange papers on the main potential deal-breaker - avoiding extensive border checks between EU-state Ireland and Britain’s province of Northern Ireland after Brexit - as well as future ties.

If they fail to agree, Britain is bound to leave the bloc next March with little or no agreements in place to mitigate the economic shock and broad disruptions expected from air traffic to car production to food trade.

Should the leaders of the 27 EU states remaining in the bloc have no Brexit deal to sign off in November, they are due to move into contingency mode, stepping up preparations for a disorderly British departure.

Some diplomats and officials say talks could drag on through December, or even January, but any deal must also be ratified by both British and EU parliaments in time for Brexit day on March 29, 2019.