Livvy Haydock investigates whether women are being unfairly treated by the criminal justice system when coercive and controlling behaviour by a partner is behind their offences. Six years ago, the UK led the world in making coercive and controlling behaviour a crime. In a 2019 landmark judgement, Sally Challen’s murder conviction was quashed when the Court of Appeal ruled that years of abuse had contributed to her murdering her husband. But has the criminal justice system really evolved enough to recognise the complex relationship between prolonged abuse and violent crime by women? Reporter: Livvy Haydock Producer: Jim Booth Editor: Nicola Addyman