@Ikeasucks
Have to pay by tonight to get the “discounted” rate at £60 instead of £100. I only pulled in to a nearby closed hotel car park to take a call for 15mins.
Has anyone just ignored a fine or successfully appealed
You have used their car park, failed to comply with the terms and will most likely need to pay.
Pay or initiate an appeal - but be prepared to lose the appeal.
Charges for private car parks are not immeadiately enforceable (hence posts stating that they are invoices not fines) but if they have appropriate signs and a valid appeals process they can be escalated to court and then become legally enforceable.
Take it as an expensive lesson to always check for car park signs.
You could claim to have stopped for a short while and found the hotel to be closed so could not pay any nominal charge or register your car on their system for free parking etc. If it was a short enough time then you can appeal on the basis that you just came and left.
An alternative is to pursue the issue as to why you must pay today, there should be a reasonable time. If you have delayed reacting then its your problem, but if they have not adhered to their process then there is some justification for more time (appealing should pause the clock before the price increases)
If they sent it at a reasonable time and the post office delivered late then there is some potential to complain, but you have received it before the price increases.
I have had an occasion where I used a shops camera controlled car park and was sent a bill for overstaying. Parking within the time limit was free.
I had arrived at a full car park, drove through and then returned later. The camera matched my numberplate on first arrival and final departure, I sent my appeal stating that I had been there twice. They will have been able to find the footage confirming that and cancelled the charge.
You won't have much chance for yours to be cancelled unless you contact the hotel, but that will be separate from the company managing the car park enforcement and you weren't using the hotel