This is because the signage is all in the name of a different parking company, Excel Parking Services.
The signage helpfully says, "By parking on this private car park you are entering into a contract with Excel Parking Services Ltd."
Now, VCS could get involved in parking management at this site in a number of ways.
1) VCS could act as debt collectors, and collect monies on behalf of Excel.
2) Excel could legally sell the charge to VCS (subject to DVLA permission) by completing deeds of assignment
3) VCS could change the signage, and collect monies on behalf of themselves
They have gone for option 3, but this only affects new charges, not historic ones.
What this therefore means is that when VCS file charges against motorists for this site, they have no right of action. Only Excel would have, but as Excel have never contacted the motorist, this would present its own difficulties.
VCS are of course fully aware of this, but this does not stop them filing claims. They know that most motorists will take fright at the sight of a claim form, and pay up; so VCS play the numbers and file anyway.
When the motorist points out the flaws in the case they bluff and bluster. Here is a typical letter from legal muppets, BW Legal, "explaining" that VCS can pursue a claim.
The bluff did not last long - 3 days. Here is the next letter discontinuing the claim.
You have to despair at the legal profession if their level of knowledge is such that they think one person can claim for a contract formed with a different person. This is Contracts 101. The situation worsens when you find out that BW Legal have been awarded Legal Team of the Year 2016. This means there are large numbers of lawyers out there who are even more incompetent than BW Legal.
The Parking Prankster