Boris Johnson is standing down as British Prime Minister.
He'll make a statement later, but it's understood he'll remain in post until the Conservative Party's elected his successor over the summer.
It follows the resignation of 50 members of his government in two days, and the release of a letter from his new chancellor telling him to 'go now'.
The mass rebellion began it was revealed Mr Johnson knew about allegations of inappropriate behaviour against MP Chris Pincher - before he promoted him to deputy chief whip.
Sky's political editor Beth Rigby says he finally had to accept defeat.
"His own goals are the thing really that brought him down.
"In the end, as hard as he may fight, if your government is collapsing you cannot run a country, and if you cannot run a country, no matter how much he may want it, you cannot remain as Prime Minister."