Reply #13 refers.
Your options:
1. "Mea culpa" and pay at the mugs discount rate.
2. "Unfair PCN" and appeal, secondary appeal, defend county court claim.
Your choice. We can only assist with your rights and any legal issues with this. You have not given us any explanation as to why the driver remains on this private land for 33 minutes without paying the tariff. Yes, the driver paid a tariff, but for the wrong car park.
You have to ask, why did this mistake occur? Was it purely the drivers fault or was there not enough prominent and clear signage that adequately brought to the attention of the driver, the charge for failing to comply with the terms and conditions of parking that private land?