What happened before the court claim was lodged and ignored is only relevant to the chances of having the matter set aside and defending a subsequent restatement of that claim.
There is no concept in law (other then indemnity) of transferring liability for a private parking penalty to the driver - all you can do is remove their ability to hold you vicariously liable under schedule 4 of the Protection of Freedoms Act 2012 by giving them the details of the driver. If they know the details of the driver, before a court claim is made, they cannot hold you vicariously liable as keeper.
The time and place to argue this would have been in a defence to the court claim you chose to ignore. Regardless of how weak or strong their claim or your defence would have been, if you don't defend a court claim, you lose by default.
So far, you seem to be very good at drip-feeding insufficient information and repeating questions that have already been answered. If you don't want to, or can't be bothered to provide a meaningful account. that's fine, although don't expect much help. If you would rather repeat the same questions, rather than reading the advice you have been given, I'll just lock the thread.