You can see the difference in attitude in their careers websites - MI5 could just be another government agency almost whereas the SIS website (note the conspicuous gap in their history section!) are clearly recruiting spies and "experienced business(etc) leaders" (to manage high level assets presumably)
You can see the difference in attitude in their careers websites - MI5 could just be another government agency almost whereas the SIS website (note the conspicuous gap in their history section!) are clearly recruiting spies and "experienced business(etc) leaders" (to manage high level assets presumably)