Re: TV detector vans certainly do work
"Look at the windows or any residence at night "
They'd have to come up half a mile of unmade road, then go on foot in the dark through thick woodlands for another half a mile because our TV is at the back of the house and the nearest road in that direction is a mile away with half a mile of woodland in-between.
So just to be sure we dim the screen & just listen to the sound ( with headphones).
Load of nonsense
( I do have a TV license 'cos you can't be too careful !)