Judge rejects disclosure of document on role of police spy in wrongful conviction

Activist John Jordan's conviction was overturned after undercover officer's involvement in prosecution was exposed

A judge has refused to order the disclosure of an official document that would shed more light on how an undercover operation caused the wrongful conviction of an environmental campaigner.

Activist John Jordan had his criminal conviction for assaulting a police officer overturned last year after the hidden role of an undercover policeman in his prosecution was exposed.