"A lawyer for Mr. Miranda, Gwendolen Morgan, told The Guardian that the police used the antiterrorism laws to bypass normal statutory procedures for seeking confidential journalistic material under a 1984 Police and Criminal Evidence Act.
“This act is likely to have a chilling effect on journalists worldwide, and is emphatically not what Parliament intended Schedule 7 powers to be used for,” Ms. Morgan told The Guardian.
Mr. Rusbridger said that two months ago he was contacted by “a very senior government official claiming to present the views of the prime minister,” David Cameron. There were two meetings in which officials “demanded the return or the destruction of the material we were working on,” and in other meetings, he said, officials said: “You’ve had your fun, now we want the stuff back,” and, “You’ve had your debate, there’s no need to write any more.”
The officials then threatened legal action to obtain the documents. Then two security experts from Britain’s Government Communications Headquarters, known as G.C.H.Q., the counterpart to the American National Security Agency, came to oversee the destruction of hard drives in The Guardian basement by Guardian executives, Mr. Rusbridger said.
He called it “one of the most bizarre moments in The Guardian’s long history.”
British Newspaper Has Advantages in Battle With Government Over Secrets, di Steven Erlanger, The New York Times, 20 agosto 2013.