I got one recently for drop off at an airport. Drove through the pay station (no physical exit barriers to indicate them) without realising. I got a parking charge notice for £100. However, if paid within 28 days of the date the notice was issued the charge is discounted to £5.
That’s a hell of a discount, surprised they were as reasonable as that. I got done at Heathrow last year, £80, reduced to £40 when paid within 14 days. That was sore.
Funnily enough the appeal on the pub one was initially rejected because there are very clear signs in the carpark and in the bar area too, BUT, it was a warm Sunday and they’d opened up the outside garden bar where I’d got served and paid, so hadn’t actually been in the pub itself to see the screen or signs in there to register. The company still weren’t having it on the basis there were signs in the car park and in the end it was appeals to the landlady herself who then got the company to call the dogs off.
I know there are question marks around the legality of some of these practices but these people aren’t stupid and it takes a brave person to take it all the way and I’m not sure I would’ve done had the landlady not stepped in.