7/7 bomb plotter Mohammed Sidique Khan was considered to be a peripheral player in a group of Britons discussing terrorist attacks, so surveillance on him was brought to a close in 2004.
Here is Khan, with fellow 7/7 bomber Shehzed Tanweer, and Omar Khyam, convicted for his role in that earlier plot, which included a plan to blow up a London nightclub.
In the same period the Clown Army, a group of middle class idiots who dress as clowns on political demonstrations, were considered so important that undercover police office 'Lyn Watson' was paid to inflitrate them.
Here is Watson, as part of a group of clowns who invaded the Leeds Labour Party HQ in 2004.
Tom Lehrer stated, after Henry Kissinger won the Nobel Peace Prize in 1973, that satire was now impossible. This example of the priorities of the police and security services makes satire, at least as far as the UK's political police are concerned, equally redundant.