VCS are a vexatious firm of ex-clampers and will pursue this all the way to a county court claim. They will lie and say that the byelaws have been rescinded for the location and so on.
If they decide to use DCB Legal to represent them, then it is a much easier firm to deal with and 99.9% for sure the claim will eventually either be struck out or discontinued. However, they sometime use Elms legal to issue the Letter of Claim (LoC) and then to issue the claim and after that will dismiss Elms and continue with their own in-house legal team, which is quite likely to go all the way to a hearing.
Either way, as long as the driver is not identified, they have no case to pursue the Keeper whether they were the driver or not. Remember that in any communication, you, the recipient of the Notice to Keeper (NtK) must only refer to the driver in the third person. No "I did this or that", only "the driver did this or that".