Some years ago I was one of the Home Office (British government department responsible for the police) scientists working on offender profiling. I was tasked with reviewing the state of the field as it then was and my conclusion then was that there were no scientifically validated techniques which had been shown to make a practical difference to the course of a real investigation. The FBI unit had had some undoubted successes but these seemed to be based on the contributions of some very experienced detectives applying policing knowledge rather than any formal psychological technique.
After I left the Home Office work went in a different direction and the best-known application was to the Rachel Nickell murder investigation. This led to the identification of a suspect, who was put on trial and acquitted. in 2008 another man was convicted for the case on DNA evidence. The original suspect received a formal apology and compensation.
In the UK there are now academic departments studying profiling at Liverpool and Starthclyde universities. It seems that research is shifting to broader and more scientifically based questions such as the nature of the detection process and the reliability of witness statements.