I work in a company whose premises are located in a business park (6 buildings total, parking lots, access roads and main road connect them all). Unfortunately parking is at a premium here, so everyone tries to park wherever possible. That includes parking spots designated for use by other firms here, located on same parking lot. Some of them got tired calling us to move unauthorized vehicle from their parking and hired a Parking Control company to monitor that. So now there is a risk of fine if parking where one is not supposed to. No complaints to that - I was wondering why it took them so long.
My question is this: can they enforce parking on the access road that leads from main road of the estate to our parking lot (which we share with others)? This access road is not wide enough to park on both sides of it, thus parking partially on pavement is necessary. Who decides if the car is parking illegally and/or in contravention of CPZ by the other company - the estate owner or that other company? I believe that this access road is shared, so actually "fair game" for parking, and they cannot enforce parking restriction on it. Am I right?