Man jailed for life for 1982 rape and murder of teenage girl
Self-employed tiler James Warnock, 56, evaded justice for strangling 17-year-old Yiannoulla Yianni in her own home, just half a mile from where he lived in north London.
Police cracked the case by matching his DNA to the crime scene last year, after Warnock was caught by an undercover officer sharing indecent pictures of children on the internet.
