The Home Office has rejected calls for an enquiry into the surveillance powers given to public authorities.
Last week the department published responses to its 45-page consultation paper, Access to Communication Data.
The consultation concerns legislation required to give authorities access to communications data under the Regulation of Investigatory Powers Act.
Under the proposals, mobile operators and ISPs will be required to store information on users for up to 12 months. Details of sent and received emails will need to be kept for six months.
The scheme will initially be voluntary, but should service providers not co-operate the government has stated that it will force operators to comply.
Two thirds of respondents to the consultation called for a wider review, but this was rejected.
A Home Office spokesman claimed that the government had taken the responses into account, and welcomed a debate on the issues of how authorities access personal information.
"But on the specific issue of data access, we have already amended our proposals," he said.
But Ian Brown, director of privacy campaign group the Foundation for Information Policy Review (FIPR) said: "The Home Office has said that it is listening, but will not have an enquiry.
"It seems to think that it's an issue of the public not understanding the proposals, and that the Home Office can just issue more explanation. We hoped it would do more."
FIPR will continue to work with the Information Commissioner to produce guidance on striking a balance between individual privacy and effective information gathering by law enforcement agencies.
"I do not think that a voluntary scheme will work. I expect the government will make data retention mandatory," said Brown.
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