Free Traffic Legal Advice

You need to search the forum because I’m not going to do it for you, but if you appeal, the appeal will be rejected, then you’ll get letters from debt collectors with increasing amounts and scary words like “CCJ”. Eventually they’ll give up.

The notice probably doesn’t comply with the requirements of PoFA 2012, it seems only to have some bits, you you may get POPLA to cancel the charge on a second appeal on this basis, as long as you don’t name the driver. However your email to them has implicitly identified the driver.

PoFA only comes into its own if the driver is not known, by transferring liability to the registered keeper. It looks as if they know who both of them are now.

£25 may be worth it to avoid the hassle, I agree.
And apologies that I was talking rubbish about PoFA earlier, brain fade, but the point seems to be that they know who the driver was now, whom they can pursue.

Next time you go to any airport without a barrier system, but where they still want to extort money from motorists, you don't have to pay. All you do is wait for the Notice to Keeper and appeal only as the Keeper without blabbing the drivers identity, inadvertently or otherwise. You simply remind APCOA or whichever unregulated private parking company is running the scam, that you refer them to the answer given in Arkell v Pressdram (1971) because they can only hold the driver liable and you, the Keeper, are under no legal obligation to identify the driver to a private company for an alleged contravention that took place on 'non relevant land'.

Even if you did nothing and ignored everything that comes your way, such as powerless debt recovery threats and such, nothing would happen because APCOA are benign and do not litigate.

It's your money.