R v. Jheeta [2008] 1 W.L.R. 2582
The defendant and the complainant had been involved in a sexual relationship for some time when the complainant started to receive threatening text messages and telephone calls. The complainant, who was unaware that the defendant was sending the messages, confided in the defendant and allowed him to contact the police on her behalf. He did not do so but over a long period sent her text messages purporting to be from a succession of police officers dealing with the bogus investigation, and he obtained £700 from the complainant for security protection which he pretended to arrange.