As North Koreans applauded confirmation that the country had tested a hydrogen bomb meant for missiles, world leaders have weighed in on the announcement.

Cheers broke out around a large screen outside Pyongyang Station following the announcement this morning, with viewers being told: "We can now perfectly rely on our operational ability, and it is astonishing how greatly our nuclear weapons technology has progressed."

British Prime Minister, Theresa May, condemned North Korea's actions today.

"I discussed the serious and grave threat these dangerous and illegal actions present with President Abe in Japan this week and reiterate the call we jointly made for tougher action, including increasing the pace of implementation of existing sanctions and looking urgently in the UN Security Council at new measures," she said.

"This is now even more pressing. The international community has universally condemned this test and must come together to continue to increase the pressure on North Korea's leaders to stop their destabilising actions."

In a standard move by the President of the United States, Donald Trump, he took to Twitter to make his feelings for the announcement known.

"North Korea has conducted a major nuclear test. Their words and actions continue to be very hostile and dangerous to the United States," he told followers.

"North Korea is a rogue nation which has become a great threat and embarrassment to China, which is trying to help but with little success."

"South Korea is finding, as I have told them, that their talk of appeasement with North Korea will not work, they only understand one thing!" he added.

Trump's tweets have been liked more than 100,000 times since their upload this morning.

The test for the advanced hydrogen bomb reportedly set off a manmade earthquake which is understood to have been about 10 times more powerful than the one picked up after the nation’s last nuclear test last year.