Theresa May will use her address to Conservative MPs and activists to say her vision for Britain is a country “built on the values of fairness and opportunity - where everyone plays by the same rules and where every single person, regardless of their background or that of their parents, is given the chance to be all they want to be”.

The Prime Minister will say that she and her ministers are determined to “employ the power of government for the good of the people”.

She will say: “A change has got to come. It’s time to remember the good that government can do. Time for a new approach that says while government does not have all the answers, government can and should be a force for good; that the state exists to provide what individual people, communities and markets cannot; and that we should employ the power of government for the good of the people.”

And she will attack Labour as “divided” and “divisive”, saying Mr Corbyn and his allies have “given up the right to call themselves the party of the NHS, the party of the workers, the party of public servants”.

She will say: “The Labour Party is not just divided, but divisive. Determined to pit one against another. To pursue vendettas and settle scores. And to embrace the politics of pointless protest that doesn’t unite people but pulls them further apart… So let’s have no more of Labour’s absurd belief that they have a monopoly on compassion. Let’s put an end to their sanctimonious pretence of moral superiority.”

She will say Government must “step up – and not back – to act on behalf of the people”.

Mrs May will pledge to “[provide] security from crime, but from ill health and unemployment too”. She will add: “Supporting free markets, but stepping in to repair them when they aren’t working as they should. Encouraging business and supporting free trade, but not accepting one set of rules for some and another for everyone else.

“And if we do – if we act to correct unfairness and injustice and put government at the service of ordinary working people – we can build that new united Britain in which everyone plays by the same rules, and in which the powerful and the privileged no longer ignore the interests of the people.”