There was no principle in English law that information received by a judge during a public interest immunity investigation could not be used by him to determine whether the police had reasonable suspicion that a defendant had committed an offence or had reasonable cause to arrest him. That procedure did not constitute a violation of the defendant's rights enshrined in Art.6 European Convention on Human Rights.

CA (Crim Div) (Otton LJ, Hidden J, Sir Richard Tucker)

05/12/2000