In a judgment handed down on 18 May 2022 the High Court has considered what information be BBC can publish in a story pertaining to the actions of an alleged MI5 covet human intelligence source (“CHIS”).
The BBC alleged that X was a CHIS and had been psychologically and sexually abusive to two female partners.
The judgment can be found here: https://www.bailii.org/ew/cases/EWHC/QB/2022/1189.html
The judgment is in two parts- one heard in public and the other in private. The private hearing was held to be necessary so that the Court could hear submissions about information that, if released to the public, would make the identity of the alleged CHIS known.
Mr Justice Chamberlian comments: “The court must be alert to the possibility of “jigsaw” identification. One piece of information may on its own seem innocuous, but when taken together with other information known to a particular malign actor, it may lead to the identification of an individual with greater or lesser confidence. The threat of jigsaw identification is a familiar feature of arguments against disclosure in closed material proceedings in the national security context. It is regularly deployed as a basis for refusing to disclose information known only from covert sources. But, although the court must be alive to the threat of jigsaw identification, it must also be astute not to allow the threat to justify a blanket prohibition on disclosure of any piece of the jigsaw.“at p.24
The BBC’s article on the case can be found here: https://www.bbc.co.uk/news/uk-61528286
The intial BBC coverage of this matter here: https://www.bbc.co.uk/news/uk-61508520
And details of one of X’s former partners’ legal action to be taken against MI5 here: https://www.bbc.co.uk/news/uk-politics-61521569
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