Andy Burnham has set out a radical plan to transform Britain, with proposals to reform the state pension triple lock to pay for social care, measures to pave the way for public control of water companies and a potential change in the UK’s electoral system.

In his first Labour Party conference speech as Prime Minister he vowed to overturn Margaret Thatcher’s 1980s reforms to give the public greater control over housing, water and energy.

Mr Burnham confirmed he wants to end the current pensions triple lock, which guarantees increases in line with the highest of inflation, earnings or 2.5%, in order to free up cash to fund his long-held ambition of creating a NHS-style care service in England.

And he said Labour will fight the next election with a commitment to change the first-past-the-post system used in Westminster contests.

Mr Burnham also set out the need for the UK to decide on its “long-term relationship” with the European Union, vowing to set out “options” for ties with Brussels around the major UK-EU summit later this year – which could potentially see Labour going into the next election seeking to rejoin the bloc.

In an emotional speech, following the death of his father Roy earlier this month, Mr Burnham choked up as he said: “The United Kingdom my dad represented is the one I believe in.”

But addressing delegates in Liverpool, he said: “This country isn’t where any of us would want it to be.”

Mr Burnham, who replaced Sir Keir Starmer in No 10 in July, claimed there was a “sense of the powers-that-be pulling against the people, not with them”.

“If there’s one thing I want to put right, it’s that,” he said.

Taking aim at the changes introduced since the Thatcher administration in the 1980s, Mr Burnham said: “Britain has been on the wrong path for a long time.

“Deindustrialisation. Deregulation. Privatisation. Austerity. Brexit.

“And what has it given us? A country run for vested interests, not in the public interest.”

He compared his task in building a new form of politics to the 1945 Labour government’s efforts to reshape the country in the wake of the Second World War.

Mr Burnham said: “We built the common good. Or at least we did until the 1980s.

“Suddenly, the common wealth we had created for the many was seen as an opportunity for the few.

“Homes. Water. Energy. Transport. Care.

“Broken up and sold off.

“The British right talk about ‘taking back control’.

“Never let them forget: they are the ones who gave it away in the first place.”

Setting out his plans for a new National Care Service, Mr Burnham said he wanted to build a “national consensus” around plans being drawn up following a consultation by Baroness Louise Casey.

“I accept I may pay a political price,” he said.

“But someone has to go through the pain barrier and rip the plaster off.”

Under the plan, the state pension would rise in line with inflation or 2.5% from 2030, breaking the triple lock’s automatic link with increases in average earnings.

But officials insisted it will also rise by more than this if needed in some years, to ensure it holds its value relative to earnings.

Mr Burnham said: “This change will generate significant savings which we will use to build up our National Care Service.”

But the Institute for Fiscal Studies’ deputy director Jonathan Cribb said savings “are likely to be relatively small in the first few years, but rise substantially over time” and “we should not expect this reform to save enough that it could fund universal social care in the next parliament”.

Officials expect the change to save £15 billion a year by 2040.

And Unite union chief Sharon Graham told the Press Association the elderly should not have to pay for the care system: “Going to the well of pensioners before going for the super rich is wrong.”

On water, Mr Burnham said new legislation would repeal “Margaret Thatcher’s ideological ban on public ownership of water companies”.

He said it would start a decade-long process to strengthen public control, with mayors getting “new powers to hold water companies to account, with tougher consequences for those which repeatedly fail”.

Mr Burnham said a “fundamental rethink” of the welfare system is needed to fund new opportunities for young people, who would be “required to take up the help presented to them”.

On Brexit, Mr Burnham said leaving the EU “hasn’t given us control”, instead “we’ve lost some of the control we had over our economy, as a decade of low growth has put us in a weaker position”.

“Brexit has done more harm than good,” he said.

Labour was elected on a manifesto which promised no return to the EU’s single market, the customs union or freedom of movement.

But Mr Burnham indicated he wanted to explore much closer ties with Brussels, including measures to tackle immigration.

Ahead of talks expected later this year with EU chiefs, he promised to set out different options for the relationship with the bloc “and I will see if we can find consensus around one which will give us clarity about our position and the future of the continent that we live in”.

Mr Burnham, who has a record of backing a change in the voting system, announced a new national commission on electoral reform.

“We will all have failed in our public duties if we carry on as we are and open the door of Number 10 to a divisive government on less than 30% of the vote,” he warned.

He said Labour would go into the next election promising to change the system “so that everyone’s vote counts and everyone’s voice is heard”.

But the announcement drew a lukewarm response from some on the Labour benches.

Skills minister Baroness Jacqui Smith told PA: “Electoral reform isn’t top of my list of priorities. Good luck to the commission. I shall be interested in what it comes out with.”

Former Northern Ireland Secretary Hilary Benn also suggested he was unsure about electoral reform, saying: “We’ll see what the commission on Electoral Reform produces.”

Tory leader Kemi Badenoch said: “Burnham wants to take Britain back to the 1970s – a time of more government control, more trade union control, and no economic growth. There is a reason our country took a different course after that decade.

“Nothing Burnham announced today will do anything to fix Britain’s long-term problems. He had no plan to fix our stagnant economy. No plan to fund defence. No plan to sort out the spiralling welfare bill beyond more government schemes.”

Reform UK’s Nigel Farage said: “By potentially scrapping the triple lock, Andy Burnham will abdicate his responsibility to British pensioners.

“Instead of cutting our bloated benefits bill, stopping migrants from accessing benefits, or slashing foreign aid, he’s considering launching an offensive against our elderly.”