Heh, do they still do the "TV detector vans" I've seen referenced or portrayed in certain old TV shows?

It's alleged that they do, but as they have complete databases of (a) all households and (b) all TV licences, I expect they just subtract (b) from (a) and menace whoever's left over. They had a billboard campaign recently along the lines of "13 houses in Mill Road, Cambridge CB1, have no TV licence" (obviously with local streets to the various billboards round the country).

Peter