I literally provided you with a link to a webform on Morrisons customer service website that is exclusively for anyone who has received a PCN in one of their car parks can use to explain to them the circumstances and request that they get the PCN cancelled. Here it is again and all you need to do is click on it as it is a hyperlink:
https://www.morrisons.com/help/form/contact-us/in-store-experience/car-parks/i-have-received-a-parking-charge-for-parking-in-your-car-parkYou state in your OP: "
They asked that if I was not the driver, to provide them with the drivers full name and address." Have you already appealed to ECP and they've come back to you with this question or are you simply paraphrasing the wording in the Notice to Keeper (NtK)?
Of course they don't know who was driving unless you tell them. There is no legal obligation for you, the Registered Keeper (RK) to identify the driver as they are simply an unregulated private parking company. However, they will claim that they have fully complied with PoFA and if you don't tell them, then they can transfer liability from the unknown driver to you, the RK, whether you were driving or not.
These are all points for appeal. However, I again repeat what I posted on another thread about a similar case at a Morrisons car park, which you should really try and understand is the likely outcome if Morrisons themselves don't get it cancelled first:
Unless you can get Morrisons to get the PCN cancelled, this will never be accepted on appeal, at least by ECP. There is a remote possibility that a secondary appeal to POPLA will succeed but don't bank on that.
However, no one who is here receiving advice and following it, pays a penny to ECP. Even if Plan A, a request with Morrisons to cancel the PCN or Plan B, an appeal to ECP or Plan C, an appeal to POPLA don't succeed, I can say with greater that 99% confidence that Plan D will bering the matter to a close after a county court claim is issued and simply defended, they will eventually discontinue some time next year.
Please stop worrying about the "mugs discount". It is there to persuade low-hanging fruit on the gullible tree to pay up without making ECP have to do anything. It's a scam. Sadly, one that probably works for the majority of the 41,000 private parking tickets that are issued every single day! Yes, every day.
Follow the advice and, whilst it can be protracted, you will not pay a penny of your well earned cash to these ex-clampers and you'll learn a lot of useful civil law and rights in the process.
The main point, which you seem to have missed, is that if you follow the advice, you won't be paying a penny to ECP.
