Four out of five parliamentary candidates say they would vote against replacing Trident, according to a new report.

The Campaign for Nuclear Disarmament said a survey of 500 candidates from parties including the Conservatives, Labour, Liberal Democrats, Greens, SNP and Plaid Cymru, showed overwhelming opposition to renewing the nuclear deterrent.

CND said opposition to spending tens of billions of pounds for new nuclear weapons was increasing among candidates across the political spectrum.

Candidates from Labour, the Liberal Democrats, Greens, SNP and Plaid Cymru will join an anti-Trident launch by CND at Westminster today.

CND general secretary Kate Hudson said: "The tide is turning on this £100 billion Cold War relic, and that's no surprise when annual spending on our current nuclear weapons outstrips the annual funding gap facing the NHS.

"While David Cameron is attempting to fear-monger over potential coalition negotiations and their impact on Trident replacement, the Conservatives are increasingly isolated on this issue.

"Every other major party has expressed openness to engaging with the question of whether Britain really needs to spend £100 billion on a Cold War weapons system which senior military figures have described as completely useless.

"Labour has said it would consider the case for a reduced nuclear weapons system. The Liberal Democrats oppose full replacement of the four submarines, and the SNP, Plaid Cymru and the Green Party all want to scrap the lot."

SNP Westminster leader Angus Robertson said: "The SNP has always been clear that spending £100 billion on nuclear weapons at a time of austerity is completely indefensible - now it seems that representatives of other parties agree.

"The idea of spending billions on weapons of mass destruction while more and more people in Scotland are being forced to rely on foodbanks is a disgrace - pure and simple."

Natalie Bennett, Green Party leader, said: "It's heartening to see such strong opposition to Trident among parliamentary candidates. People are waking up to the fact that we would be safer without these hideous weapons of mass destruction in Britain, as well as saving £100 billion that could be spent on essential public services.

"Electing a strong group of Green MPs gives the public the chance in this election to take a big step towards that goal. We will work with other anti-Trident politicians in the coming years to cast this relic into the scrapheap of history."