The Deputy Prime Minister, Nick Clegg, has said the government must "go back to the drawing board" over plans to give the police and security services new powers to monitor internet use.
The draft Communications Data Bill attracted strong criticism from a parliamentary committee which suggested it gives "insufficient attention" to public privacy and places too much power in the hands of the home secretary.
Mr Clegg said ministers must take account of those findings but the Home Office has insisted the legislation is vital in helping to catch paedophiles and terrorists.
The Home Secretary, Theresa May, has insisted the bill should go ahead.
The security minister at the Home Office, the Conservative MP James Brokenshire, told Today presenter John Humphrys that concerns are being listened to: "Any extension that would have to be through the full scrutiny of Parliament and we are saying very clearly that... we accept that."
"This is about saving lives and protecting the public and that is our absolute focus on getting that right," he added.
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