European leaders have given British Prime Minister Theresa May’s Brexit deal the green light during a historic meeting in Brussels that took less than an hour.

European Council President Donald Tusk made the announcement via Twitter on Sunday morning, with the 27 leaders having rallied behind the deal in just 33 minutes.

However he did not say whether there were any objections.

“EU27 has endorsed the Withdrawal Agreement and Political Declaration on the future EU-UK relations,” he said.

Both the Withdrawal Agreement, which includes the divorce settlement, and the Political Declaration on future trade were approved.

The milestone came just hours after Mrs May penned a “letter to the nation,” where she said leaving the EU on March 29 next year would mark “a new chapter in our national life”.

“It will be a deal that is in our national interest — one that works for our whole country and all of our people, whether you voted ‘Leave’ or ‘Remain’,” it read.

“It will honour the result of the referendum.

“We will take back control of our borders, by putting an end to the free movement of people once and for all.”

However the baton has now been passed over to the European Parliament, which will vote on the deal next.

A defiant Mrs May will now face the fight of her political career, with 100 MPs expected to vote down the deal in the Commons within weeks.

The Telegraph reported that Cabinet and EU diplomats were preparing for the deal to be rejected in parliament by drawing up a “secret Plan B.”

The plan would see the UK adopt a Norway-style relationship with Brussels where it would remain in the single market and follow EU rules, including free movement, while also joining a customs union.

Yesterday’s historic summit also comes after Mrs May denied caving into demands from Spanish Prime Minister Pedro Sanchez, who’d threatened to boycott the meeting if amendments were not made to ensure Madrid was given a say in Gibraltar’s future ties with the EU.

The British Prime Minister strongly denied yielding to Spanish demands, stating that the “UK’s position on the sovereignty of Gibraltar has not changed and will not change.”

While Britain will leave the EU in March next year, future relations and trade will be decided during a transition period that’s expected to last at least until the end of 2020.