DAVID Cameron is warned today by a raft of campaign groups and political opponents of their determination to block his bid to scrap the Human Rights Act and replace it with a British Bill of Rights as a centrepiece to his programme for the UK Government in the Queen’s Speech.

The warning came as the SNP demanded - just eight weeks after the Scotland Bill became law - a new Home Rule Bill for Scotland to transfer even more powers to Holyrood.

Prime Minister wants to enshrine in a bill of rights the supremacy of UK courts to enable British judges to have the final say on human rights cases following concerns foreign criminals, including terrorists, have been able to use current human rights laws to avoid deportation.

The Liberal Democrats – successful in the House of Lords last autumn in scuppering the Conservative Government’s plans to axe tax credits – are planning to “torpedo” Mr Cameron’s bill of rights' plan in the second chamber.

Tim Farron, the party leader, said: “We have fought for centuries to establish our basic rights. It is very dangerous to start playing around with them now in order to score a few political points and placate a hostile cabinet."

Alistair Carmichael, the former Scottish Secretary and now the Lib Dem’s home affairs spokesman, said he had obtained a letter from the Irish Justice Secretary to UK Justice Secretary Michael Gove, warning him that British withdrawal from the Act could undermine the Good Friday Agreement.

The Orkney and Shetland MP also noted: “The devolved settlements in Scotland, Wales and Northern Ireland all have the European convention hard-wired into them. This Tory government seems hell-bent on unravelling the Union by their actions.”

Meantime, an alliance of more than 130 groups - fronted by Liberty, the British Institute of Human Rights and Amnesty International - have come together to oppose scrapping the Act, believing a British bill would be weaker and diminish rights protection.

They include Lockerbie victims’ relatives, the TUC, Carers UK, Scotland’s children and young people’s commissioner, a raft of charities supporting children, older people, victims of trafficking and slavery, disabled people and asylum-seekers as well as national groups representing psychiatrists, teachers, football supporters and students.

Bella Sankey for Liberty, said: “These diverse organisations speak as one in defending the Human Rights Act. They join all the devolved administrations, all major opposition parties, Conservative rebels, anti-apartheid activists and thousands of ordinary people in opposing divisive and discriminatory plans to replace human rights with Government-sanctioned privileges.

“There is a long struggle ahead but as the chorus of condemnation grows how much longer can the Government refuse to listen?” he added.

Among measures expected to be in today’s Queen’s Speech are:

*the biggest shake-up of Britain's prison system since the Victorian era with the first six semi-autonomous "reform prisons" planned for south of the border;

*an Extremism Bill, targeting hate preachers;

*a Digital Economy Bill to spread broadband to the more remote parts of the UK;

*a Lords Reform Bill to limit the power of peers to block Government legislation;

*a Care Bill to boost adoption and

*a Technology Bill, covering the growing use of driverless cars, controlling the use of drones, and building the first commercial spaceport, possibly in Scotland.

Meantime, the SNP put forward its alternative Queen's Speech, which included measures to clamp down on tax dodging and support renewables and the UK's wider energy sector.

Angus Robertson, the party's leader at Westminster said: “The party seeks long-overdue radical democratic reforms of parliament and the electoral system and calls for a Home Rule Bill to provide the meaningful devolution to Scotland that current and former Westminster party leaders promised the Scottish people during the independence referendum."

Labour's Ian Murray, the shadow Scottish secretary, said: “With growing unemployment in Scotland, spending cuts that are hitting public services and fewer and fewer opportunities for our young people, this should be a Queen’s Speech that ends the failed austerity policies of this Tory Government, helps working people and gets our country back on track.”