It took the resignation of nearly 60 members of his government — almost half the payroll — for Johnson to finally abandon his attempts to cling on to power.
Speaking in front of the famous 10 Downing Street door, the same place where many of his predecessors delivered their own resignation address, Johnson announced that he would be stepping down — without actually saying the words out loud.
Even then, the Prime Minister insisted that he would continue as caretaker leader while the Conservative Party launches the process of choosing a successor.
Some senior figures in his party say even that will be unsustainable, given the dwindling number of people willing to work for him.
Others are already lining up to replace him. Party officials say they will announce the timetable for a leadership election by Monday.
Thank you for joining us for our live coverage. Read our full report here.