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Emma Norton, a legal officer for campaign group Liberty, said: "People need to understand just how personal this information is that will be taken and retained and what an intimate portrait of their lives it will create.
"And there was very little evidence to suggest that by giving police even greater banks of information about people who they don't even suspect of committing crimes it is going to make their jobs - it isn't."
Their legal challenge comes as Home Secretary Theresa May draws up proposals to give police and spies new powers to monitor internet and phone use.
Downing Street said the measures, announced in last month's Queen's Speech, would "address gaps" in intelligence gathering and access to communications data that are putting "lives at risk"