New video footage has emerged showing a TV Licensing detector van conducting (supposedly) covert operations in Derby.
The same van, registration number VX09 VZP, was previously sighted in Liverpool back in April 2014.
It was recorded yesterday by the legally-licence-free occupier of a property in the Chaddesden area of the city.
In characteristic fashion, the van sped off as soon as it became apparent that the occupier was approaching with a camera.
According to TV Licensing, it has a "fleet" of these vans operating across the UK. The same type of van is always used - a plain white, high-top VW Transporter.
The vans are quite distinctive. They have a window panel door on the nearside, with a smaller pale-green curtained window directly above. The offside has a single window panel, but no door. The larger windows are blacked out, but the smaller curtained window is not.
Previous images show a lens mounted behind the curtained window. Capita Court Presenter Chris Christophorou, has previously discussed the significance of that lens.
The BBC retains ownership of these vans and associated equipment, but for convenience sake they are registered to the relevant Capita detection manager. The equipment within the vans was installed by Cambridge-based dB Broadcast Ltd, which is also responsible for any ongoing maintenance.
The current vans all bear 09 registration numbers, which means they were first registered in 2009/10. Capita contracts a company called Leasedrive to undertake the mechanical maintenance of the vans, although this is sub-contracted to a number of local garages and dealerships.
Given the regularity with which the same vans are spotted, we estimate that there are no more than ten of them covering the whole of the UK. The use of detection is certainly not widespread or routine, as TV Licensing would have people believe.
You can read a lot more about TV Licensing's use of detection in this article.