Thank you for your insight above. So if I understand correctly - the Keeper should send that statement to VWFS, in order to prevent them providing Keeper details to Alliance?
Errr, no. That is not what I have advised.
VWFS are the "keeper". You are the "Hirer". No one has mentioned the "driver". All three are separate legal entities. VWFS and Alliance Parking do not know the identity of the "driver". VWFS only know the identity of the "Hirer".
If VWFS have done the transfer of liability from them, the "keeper" to you, the "Hirer", then Alliance Parking will also know that you were the "Hirer". Unless you, the "Hirer" told them the name of the "driver", they also have no idea who the "driver" is.
As there is no legal obligation on you, the "Hirer" to identify who the "driver" was, and they are not allowed to infer or assume that the "Hirer" must also be the "driver", again covered by persuasive case law, then the only way Alliance Parking can pursue you as the "Hirer" is if all the requirements of PoFA 2012 have been fully complied with. Partial or even substantial compliance is not sufficient.
So, all you need to do is tell VWFS that they are morons for calling a PCN a "penalty" or a "fine" or that any "offence" has been committed. Expose their intellectual malnourishment by highlighting the relevant law, namely paragraphs 13 and 14 of Schedule 4 of the Protection of Freedoms Act 2012. Here is a link to the relevant legislation you can provide for their delectation and education:
https://www.legislation.gov.uk/ukpga/2012/9/schedule/4/enactedYou should have a study of it too, in order to gain an understanding of how this all works.
Once you have pointed out the errors that VWFS have made in their assumption that a PCN is some form of "fine" or "penalty" for committing an "offence", you can explain that all they had to do for this PCN and any other PCN that they receive as an NtK from any of their many thousands of customers, is to transfer liability from themselves to the Hirer as proscribed in paragraph 13 of PoFA and it is no longer an issue for them.
The error you have made is appealing to Alliance Parking without having been given an NtH which means that Alliance Parking are within their rights to ignore whatever you appealed. As for copying in VWFS, well, that is about as useful as a poke in the arm with a sharp stick.
Explain to VWFS that as long as they have transferred liability for the invoice, they are no longer liable and you will be dealing with it.