
Britain has failed to make firm progress on managing radioactive waste despite fears over security in the wake of 11 September terror attacks.
House of Lords committee expressed dismay at the failure to come up with long-term solutions to the issue.
They criticised instructions to a new advisory body to start with a "blank sheet of paper" despite international consensus on waste disposal.
"We are dismayed by the government's lack of urgency," peers said.
House of Lords science and technology committee chairman Lord Oxburgh said: "In 1976 the Royal Commission on environmental pollution emphasised the urgent need to find a long-term solution to storing radioactive waste.
"In March 1999 and again in November 2001 this Committee argued the case for rapid action, but still no firm progress has been made, even though the events on 9/11 raise questions of the vulnerability of existing storage facilities.
"We are dismayed by the government's lack of urgency."
He said the UK had generated radioactive waste for more than half a century and still had failed to decide how to deal with it.
"Ministers seem to be using perpetual consultation exercises to put off making the crucial decisions," he added.
Peers came up with a series of recommendations for the new advisory body, the Committee on Radioactive Waste Management (CoRWM).
He added: "Involvement of the public and being able to account for decisions are an increasing requirement of government.
"The lack of such involvement has been a key contribution to the failure of previous programmes. The old 'decide-announce-defend' approach is unacceptable."
Mr Morley added that solutions to disposing of nuclear waste "cost billions of pound and take decades to implement".
"Taking a little time now to get the decision right represents time and money well spent," he argued.
"We cannot simply rely on what other countries see as the right solution: we must consider, and be able to demonstrate, what is right for the UK."