Overview

• He was found guilty in 2008 of murdering four elderly orthopaedic patients in Leeds by injecting insulin and of attempting to kill a fifth
• The Criminal Cases Review Commission referred his case to the Court of Appeal in 2021 citing the prosecution’s reliance on wholly circumstantial evidence
• In a 14-day hearing earlier this year, Campbell’s legal team argued that evolving medical understanding of spontaneous hypoglycaemia rendered the convictions unsafe
• Lady Justice Macur, Mr Justice Picken and Sir Stephen Irwin unanimously dismissed his appeal on June 26, stating they had no doubt about the safety of all five convictions
• The decision has prompted comparisons with Lucy Letby’s case, which is also under CCRC review after her conviction for the murders of seven newborns