A determined motorist has now tracked them down, and The Parking Prankster can reveal that their offices are based in Beaconsfield, and their full address is:
3 Gregories Court
Even with the address the building is difficult to find.
The Prankster has therefore published an aerial photograph showing their office buildings ringed in red.
The Aston Martin of owner Rupert Williams, with personalised number plate ending RW, is often parked outside, showing that car park management is a lucrative business. Mr Williams conveniently lives about a mile away from the offices, making it easy to get to and from work.
The motorist found the offices through a combination of local knowledge and luck. The PO Box was traced to a nearby Mace Confectionery Store. From there the trail ran cold but he was lucky enough to overhear a conversation in a cafe mentioning UKPC. This led him to the offices.
The offices are staffed by 20 or so employees, mostly sat around computer screens.
The Parking Prankster