Forms asking permission to access smartphones, messages, photographs and emails have been rolled out across in England and Wales.
It comes in response to a scandal over the number of serious sexual assault and rape cases that collapsed after vital evidence was not disclosed before trial.
However, the Centre for Women’s Justice (CWJ) and Big Brother Watch announced Monday they were joining forces to challenge the new policy in the courts.
Harriet Wistrich, director of the CWJ, said: “We seem to be going back to the bad old days when victims of rape are being treated as suspects.
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