There never were detector vans, oh there were/are vans (26 at current count) with TV detector written on the side and an impressive but ineffective antenna but inside there was/is nothing. No kit, nothing! They exist merely to threaten the proles.
Whilst in the old valve/CRT TV days it was possible to detect a TV by emissions from the line scan output. These days no way.
"Detection" consists of looking through windows and listening through letterboxes.
It's a pointless effort as the numbers without TV licences will continue to climb as people shun broadcast TV and know how to deal with TVL.
__________________
History is much like an endless waltz: The three beats of war, peace and revolution continue on forever.
However history will change with my coronation - Mariemaia Khushrenada
