Much better.
So, the Notice to Keeper (NtK) is PoFA compliant which means that if the driver is not identified, the liability for the charge can transfer to the Keeper. However, that is not an issue here as the argument is going to be over whether a contractual term was breached by the driver.
As the appeals process has been exhausted, you are going to have to wait for MET to issue a claim in the county court. Until then, there is not much you can do. You can safely ignore all debt collection letters. They are powerless to do anything as the debt collectors are not a party to the contract allegedly breached by the driver.
Never, ever, ever communicate with a powerless debt collector. If you receive a Letter of Claim (LoC). then please come back and show us. It is not crucial to respond to an LoC but showtimes it is worthwhile, even if only to make the bar stewards work for it.
When the N1SDT Claim Form arrives from the CNCB, that must be responded to. Show it to us when you receive it, redacting only your personal data, the claim number, your VRM and the MCOL password. Leave everything else visible, especially the Particulars of Claim (PoC) and all dates.
The only other thing to note is that they are most likely to use DCB Legal as their bulk litigator which means that you are unlikely going to be able to use the arguments discussed above as it is 99.9% likely that they will discontinue before it ever gets to a hearing.