A £700,000 review set up to examine the case for a British Bill of Rights has failed to come up with a unanimous conclusion.
Most members of the Commission, created last year by Prime Minister David Cameron to investigate repatriating human rights powers from Brussels, backed calls for new legislation. But two of the legal experts opposed such a move warning it was "possibly even dangerous, with unintended consequences".
Liberty director Shami Chakrabarti branded the review an "18 month-long shambles" while Labour said the report was a "dog's breakfast".
The commission has previously faced criticism from Mr Cameron for its slow progress and one member, Michael Pinto-Duschinsky, quit in May, claiming it had been rigged by europhiles Deputy Prime Minister Nick Clegg and former justice secretary Ken Clarke.
In the report, drawn up for Mr Clegg and current Justice Secretary Chris Grayling, seven of the nine experts said there was a strong argument in favour of a UK Bill of Rights that would "incorporate and build on" the UK's obligations under the European Convention on Human Rights.
But Baroness Helena Kennedy and Professor Philippe Sands said the rest of the panel had failed to identify any shortcomings in the current system and raised fears that it would be used to "decouple the UK from the European Convention on Human Rights." They added: "This is not a risk we are willing to take."
Commission chairman Sir Leigh Lewis said the majority believed a British Bill would come to be seen as "owned by this country, by the people of this country, by the Parliament of this country". He added: "If there were a UK Bill of Rights we should not be against the idea it might contain rights beyond those in the Convention. It's well over half-a-century since the Convention was drafted. The world has moved on in unimaginable ways."
The chairman said the majority of the Commission believed it was "undesirable" to open up "socio-economic rights" to the courts, such as a right to health or education. Sir Leigh said: "Such issues revolve around the allocation of scarce resources."
Ms Chakrabarti said: "This 18 month-long shambles wasn't an attempt at papering over cracks of consensus on rights and freedoms but at bridging the Grand Canyon. The majority includes people who would replace human rights with citizens' privileges that can be stripped away by Government - they ignored their consultation responses and own terms of reference which were supposed to be about building on Convention rights, not destroying them."
Shadow Justice Secretary Sadiq Khan said: "The Commission was a classic political fudge, designed to paper over the cracks within the Tory-led Government, and today's report is a dog's breakfast as a result. This report will fuel the Tory obsession with Europe, and expose their true aim, which is to abolish all of the rights enshrined in the Human Rights Act and replace with a new set, with fewer rights."