Done some digging into this. Looks like I am not the only one who has received these tickets, which is expected due to the number of cars which are parked in the same location, daily.
Here is an extract from Trust Pilot
BEWARE - the camera that is operating in the Lidl Carpark is poorly placed and is picking up vehicles that are parking legally on Commercial Road just down from the Hospital entrance. Staff, students and visitors can legally park here but the camera picks up the number plates that are parked beyond this entrance.
If it helps anyone, I have responded with this text in my appeal to four fines!
It seems there has been a misunderstanding regarding the parking fines. The vehicle in question was driven through the camera at the entrance to Lidl and immediately exited, effectively making a U-turn. It was then parked legally on Commercial Road, out of the camera's sight, which is why the camera continued recording the length of stay. Commercial Road has double yellow lines at the traffic lights and opposite the hospital entrance, but the rest is unmarked and unsigned.
Supporting images will be provided. Once the vehicle moves from the lower part of Commercial Road, it is picked up by the camera again and recorded as leaving the monitored part of the site. This vehicle has never been parked in a bay within Lidl Carpark. Brook Retail Park has not adopted any of the road outside the delivery parking bay, which is owned and maintained by the council which has a small section of unrestricted parking. Often used by hospital staff or visiting relatives.
The vehicle has been parking on this section of the road for over a year without receiving a fine. Recently, the company received four fines dating back to June, and only now are the PCNs being received. Please cancel all fines related to this vehicle, as it was parked legally on Commercial Road and not on the land operated and maintained by Brook Retail Park.
Looks like I will have to do my own due diligence to see whether that road is owned by the local council, or privately. Sending a FOI request to the council to see whether they own it or not.
Happy to hear thoughts from others on this.