Earlier this year my brother received a parking ticket whilst on his work duties. He's a postman. He appealed with Redbridge Council, explaining that he was on duty and they accepted his argument, they cancelled the ticket.
Today, we had a bailiff from Equita call by and say that they were here to collect £500 for the parking ticket and their fees. If this was not paid, they would be bringing a tow truck to remove the vehicle. Of course, we paid him to keep the car. He said we could get the money back from Redbridge council/Northamptonshire courts if we explained the situation.