Some may think that using prosecution to try to enforce what many regard as a rather curious law would serve only to interfere with aviation enthusiasts' enjoyment and do nothing whatsoever to deter those who wish to listen to transmissions for some criminal purpose.
Indeed
FL.
There was a great screaming and shouting from various Chief Constables to ban scanners a few years ago so people couldn't listen to police messages and scarper before the police got to the scene, It went very quiet when somebody quipped "oh yes, in the same way making firearms illegal has stopped criminals from using them".