Britain's Prime Minister Boris Johnson | Daniel Leal Olivas/AFP via Getty Images Boris Johnson says he will not quit if parliament suspension ruled illegal The Supreme Court will deliver its verdict Tuesday morning.

NEW YORK — Boris Johnson said he would not resign if judges rule he acted unlawfully when he suspended the U.K. parliament.

As the Supreme Court prepared to deliver its verdict on the unprecedented case, the U.K. prime minister insisted a ruling against him would not be cause to quit his job.

Asked by journalists whether a government loss would make his position untenable, Johnson said: “No.” He added: “I think the reasons for wanting a queen’s speech were extremely good.”

Judges are set to hand down a verdict at 10.30 a.m. U.K. time on Tuesday over whether the prime minister broke the law when he prorogued parliament for almost a month to October 14.

Critics argue he suspended the sitting to avoid scrutiny of Brexit and increase his chances of taking the U.K. out of the EU without a deal on October 31.

But Johnson says he wants to bring a new program of legislation forward to deal with public services and other issues, after the last parliament became the longest since the English Civil War.

Speaking on the RAF Voyager plane on his way to the U.N. General Assembly in New York, Johnson said MPs were losing just a few days of parliamentary time after party conference season.

“What are we losing? Four or five days of parliamentary scrutiny, when parliament has had three years to discuss the issue, and they will be able to come back and discuss Brexit after the European Council on October 17 and 18,” he insisted.

“So 'donnez-moi un break' is my message to those who say there will be no parliamentary scrutiny. It’s absolute nonsense.”

The Supreme Court will rule on two cases. One is a government appeal to a case it lost in Scotland’s Court of Session, which was brought by more than 70 parliamentarians headed by Scottish National Party MP Joanna Cherry.

The judges in that case wrote that the decision to suspend parliament was “motivated by the improper purpose of stymying Parliament and that it, and what has followed from it, is unlawful.”

The other is an appeal by campaigner Gina Miller, backed by former prime ministers John Major and Gordon Brown, after Miller lost her case at the U.K. High Court because it was deemed a political matter.

Foreign Secretary Dominic Raab has insisted the government will “abide by the ruling” of the Supreme Court.

But appearing on the BBC Andrew Marr show on Sunday, Raab refused to rule out proroguing parliament again if the government wins the case.