Jeremy Corbyn last night warned Labour's grassroots to prepare for a snap general election.
He slammed Boris Johnson as having "no plan" to tackle Britain's problems.
And he branded the PM's new top team "the most hard right-wing Cabinet I have ever seen."
Speaking to hundreds of supporters outside Parliament, Corbyn said: "In reality the vote we need is the vote of the people, both to reject Brexit and to elect a Labour government for the future.
"For all the arm-waving bluster of the Prime Minister this morning, what came out of it very, very clearly is this: There is no plan to deal with Brexit, there is no plan to deal with the crisis in public services all across Britain.
"There is no plan to deal with the climate emergency that this country and our planet absolutely faces."
He said the new Government believes in tax giveaways for the rich and big business
And he dismissed the idea of special trade deals with the US, saying President Donald Trump is "totally about" America first.
He also said: "Despite his denials today I firmly believe the US administration would insist on access to our health market, as they call it, in reality it is our NHS."
The Labour leader urged people to register to vote and praised grassroots activists for the work they do in spreading Labour's message.
He also launched a series of pledges to the country if Labour wins the next general election, including increased funding for the NHS, a real living wage of £10 an hour, and no increase in income tax or national insurance for 95% of people.
There were also promises of a green industrial revolution, free school meals for primary school children, as well as a vow to keep the winter fuel allowance, free TV licences and bus passes for pensioners.
