• Afua Hirsch and Satish Sekar
• The Guardian, Monday 22 December 2008

Three witnesses who gave false evidence in a murder trial after they were bullied into doing so by police were sentenced to 18 months' imprisonment last week, raising fundamental questions about the fairness of the law of perjury and duress.

The witnesses - Mark Grommek, Leanne Vilday and Angela Psaila - were charged with perjury in 2004 in connection with the murder of a 20-year-old prostitute, Lynette White, who was found stabbed to death in a flat in Cardiff on Valentine's Day, 1988.