I suspect my introduction to the Police was the children's TV show Camberwick Green (see wikipeadia) and hence the song lyrics above.
I respect to the Police, I like the Police. I turn to them when in need and don't envy them for the job they do, but, since 1990 almost 1000 people have died in Police custody yet, not a single police officer has received a jail term as a result.
That is a bout one person a week dying in Police custody. The issue is that the Police investigate themselves and the Iindependent Police Complaints Authority can drag investigations out for years on end. The system need to change and soon.