Jeremy Corbyn faces calls to stand down immediately after leading Labour to its worst British election result in more than 80 years.
On a disastrous night for the party, which saw a string of Labour strongholds fall to the Conservatives, Corbyn said he would not lead the party into the next general election.
However, speaking following the count in his Islington North constituency, he said he intended to take it through a "process of reflection" while they considered the way forward.
"I will discuss with our party to ensure there is a process now of reflection on this result and on the policies that the party will take going forward," he said.
"And I will lead the party during that period to ensure that discussion takes place and we move on into the future."
He was rounded on, however, by angry Labour MPs and defeated candidates who blamed his leadership for their catastrophic showing and called on him to go.
Veteran MP Dame Margaret Hodge said the result represented the rejection of the entire Corbyn project and it was time for him to quit.
She said under his leadership, Labour had become the "nasty party", with anti-Semitism allowed to flourish.
"People just didn't trust the economics, the confetti of promises that was thrown at the public without any clear and honest way they were going to be paid for," she told the BBC.
"People didn't trust us with the national security of the nation. People didn't trust Mr Corbyn with looking after them.
"Labour has become the nasty party. I am one of the victims of that with the anti-Semitism."
Phil Wilson, who lost Tony Blair's former seat of Sedgefield to the Tories, said attempts to put the result down to Brexit was "mendacious nonsense".
"Jeremy Corbyn's leadership was a bigger problem. To say otherwise is delusional. The party's leadership went down like a lead balloon on the doorstep," he said.
Former cabinet minister Hilary Benn said: "Any Labour canvasser will tell you we knocked on too many doors where people said, 'I've voted Labour all my life but I'm not going to vote Labour in this occasion', and they didn't have confidence in the leadership of the party," he said.
Corbyn's allies insisted the defeat was down to the inability to overcome differences over Brexit rather than a rejection of his radical left-wing program.
The party was left with just 203 seats - down from the 262 it won in the 2017 general election and the 243 it held when parliament was dissolved in November.
Speaking in north London, Corbyn defended his "manifesto of hope" to right social injustices and tackle the climate crisis.
"However, Brexit has so polarised and divided debate in this country it has overridden so much of a normal political debate and I recognise that has contributed to the results that the Labour Party has received this evening all across this country," he said.
Australian Associated Press