Mother: 'Sian will never be forgotten'
Sian O'Callaghan's mother has spoken outside the court where taxi driver Christopher Halliwell was convicted of the murder of the 22-year old.
Elaine O'Callaghan said, "Our lives have been changed forever as the result of a truly wonderful life being taken too soon."
The hard lessons from the Sian O'Callaghan investigation
What is moral is not always legal. That's the hard and uncomfortable lesson of the investigation into the disappearance of Sian O'Callaghan.
Taxi driver to serve life for murder of Sian O'Callaghan
Christopher Halliwell to serve 30 years for the murder of Sian O'Callaghan. But escapes justice over second murder after police blunder.