The future of the NHS and English schools are “at stake” in the General Election, Jeremy Corbyn has said, as he attempted to steer the campaign away from Brexit and onto Labour’s favoured battleground of the public services.

The Labour leader turned Theresa May’s election slogan against her, claiming that after seven years of Conservative-led administrations, the state of health, social care and education were “anything but strong and stable”.

Five more years of Tory government would be “disastrous” for public services, while Labour would be willing to ask the richest to pay “a little bit more” to fund them, he said.

Patients are suffering ever longer waits and overcrowded wards. It has to change, and with @UKLabour in government, it will. #ForTheMany pic.twitter.com/GiXRCsfHyg — Jeremy Corbyn (@jeremycorbyn) May 31, 2017

Mr Corbyn’s attack comes after Mrs May attempted to force the campaign focus onto her core messages of leadership and Brexit, saying the Labour leader was unprepared for crunch Brexit talks and would find himself “alone and naked” in negotiations.

Labour’s analysis claims that under Tory plans, 5.5 million people will find themselves on NHS waiting lists in England by 2022, the scheduled end of the next parliament, a 1.8 million increase from now.

Seeking to exploit perceived Tory weakness on social care, Mr Corbyn also said 1.5 million older and vulnerable people will not have their social care needs met. In addition, 650,000 school children will be “crammed” into primary school classes larger than 30 pupils and families will be almost £450 worse off per child as a result of Tory plans to scrap free school meals for 1.7 million children.

This election is vital for the future of the NHS and our schools. Take a look at what could happen after five more years of the Tories ↓ pic.twitter.com/feVbEHm9Kf — The Labour Party (@UKLabour) May 31, 2017

Mr Corbyn highlighted Labour plans to invest £37 billion in the NHS and £8 billion in social care, with moves towards creating a National Care Service. And he stressed the party’s plans to cap class sizes at 30 for five, six and seven-year-olds.

Giving a speech in Westminster, the Labour leader will say: “The future of the NHS and our schools are at stake in this election. The state that the Conservatives have left our NHS and our children’s schools in is anything but strong and stable.

“Over the past seven years, they have starved the public services we rely on of resources, because at every turn, the Conservatives have chosen tax giveaways for the few over public services for the many.

“Patients are suffering ever-longer waits and overcrowded wards, those who need care have been left without it. A&E units and whole hospitals are threatened with closure. Children are crammed into overcrowded and crumbling classrooms. Schools are sending home begging letters to the parents. It has to change.”

Jeremy Corbyn meets supporters in Reading (Andrew Matthews/PA)

Mr Corbyn said analysis from the independent Institute for Fiscal Studies showed that the Conservative manifesto for the June 8 General Election showed they were offering no new money for the NHS and a real-terms cut in per-pupil funding for schools.

Conservative Work and Pensions Secretary Damian Green said: “Brexit negotiations start 11 days after people vote and are crucial to our economic security and the future of public services. Made-up numbers from Corbyn cannot hide the fact he’s not up to the job of getting the deal we need.”