Yes, it appears the "detector vans" are an urban legend/propoganda.

Even more fun, in the lead up to Greece joining the EU, they had to get their government pay under control so they were given monthly caps on what they could pay people. No problem, they created a 13th month.

* As detailed in Michael Lewis' Boomerang: https://amzn.to/4cXJnjE - He's the same guy who wrote The Big Short and Moneyball

There's a famous website about it, I've been following since 2008: https://www.bbctvlicence.com/