I used the same car park and received my second letter a couple of weeks ago. Sports direct pay G24 to man the car park ,according to the manager. Another good forum is moneysaving expert, there is enough information on there to support you until the end. There is also a piece in the St helens paper from the Mayor ( poor journalism) Don't pay them and don't reply to them, thats what they want you to do, they will go away in the end. I would love them to take it further, I have enough evidence from that car park for all of us.