I have just received a £60 'charge' in a private ncp car park, for parking 'outside the marked bay'. This bay was only marked at the back, so no line to the side, and my car tyre was 2 inches over the line! I have read up on this elsewhere, and my instinct is to ignore it. I feel that appealing that I was only a little bit over would have no sway and would be a waste of time. I know this has come up elsewhere on here, so apologies if this a bit repetitive. But my plan is to not enter into any correspondence with them and ignore any threats I get. Would this be the right course of action?