It's all a means to an end. The response to the DVLA is to point out that they ignored the operators unlawful use of the data provided by them. Once the DVLA has been notified of a misuse of data provided by them, simply brushing it off as a "simple ANPR misread" is not satisfactory.
Hopefully, this will result in a complaint to the BPA and perhaps a follow up to see what, if any, sanctions were applied and whether those sanctions were transmitted to the DVLA as required by the KADOE.