A court hears that Stephen Sexton, 38, strangled and raped his former partner, Joanna Derkacz, 37, after their relationship ended. Prosecutors say Sexton was a marine engineering worker and that Derkacz was a recruitment consultant. The case centres on allegations that she had previously warned police about him, describing controlling behaviour and telling officers he could “flip” at any time. According to the account put to jurors, the offences occur weeks after those concerns were raised. The prosecution frames the case as violence following the breakdown of the relationship. The reports state that the matter goes before a jury and that jurors are considering evidence presented during the trial, including testimony about what Derkacz told police and the circumstances leading up to her death. The sources provided do not describe the defence position or specific forensic or timeline details beyond the core allegations. The trial is ongoing, and the court has not established guilt at this stage.