Someone asked a question about UK Television Detector vans a while back, which are used for checking out whether someone is watching live television without a licence. Apparently, they have white vans with TV licence detector signs on them, and they go round the streets but they don't have any detection equipment on board...Apparently, the are used as some kind of deterrent reminder.
Enjoy, ATB Dougie.P.S. There are a whole load of hilarious videos that go with it, all about people avoiding paying their licence fee. Long arguments with police and private dicks, heady with wrong intelligence. Still, that's the way to do it...police are agents of the people and swear and oath, and are there to protect the people and their rights and keep the peace and prevent illegal entry onto private property as part of our rights...Great stuff!