More 'lessons learned', I suppose.

Last Christmas Devon police revoked the firearms licence for the gunman who shot 6 people dead on Thursday. The reason being given that there was an accusation of assault against him. He was sent on an anger management course and last month he had his licence and guns returned to him resulting in what we now know would have catastrophic results. Was it as easy as that? Was there any follow up on a clearly unstable young man who had some unnerving posts on social media? Surely some follow up care might have helped him mentally and reinforced the decision to remove his firearms in the first place. There is an internal enquiry going on and I suppose we will hear the usual statement of 'lessons learned'. Are they though?