From Police Scotland 4 hours ago:
Every homicide committed in Scotland since 2013 has been detected by Police Scotland. In 2022/23, all 52 homicides committed in Scotland were detected.
Latest statistics from Scottish Government, published today, show the number of homicides committed in Scotland continues to reduce. Police Scotland’s 100 per cent homicide detection rate means that every one of the 605 murders committed since the inception of the single national service in 2013, has been solved.
In addition, a significant number of ‘cold cases’, some committed many decades ago, have also been detected with the culprits identified, often using the latest technologies, and brought to trial. These have included the murders of Brenda Page (1978) and Renee MacRae (1976).
https://www.scotland.police.uk/what-s-happening/news/2023/homicides-in-scotland-2022-23/
Only the Express has covered this story claiming to have found one unsolved from 2019, only because it hasn’t gone to court yet, and five from before 2013, which are unsolved.
In England, it’s 99% with 16 cases unsolved just last year.
Talking-up Scotland 'Albatraz' 