Received a PCN for unpaid parking at Cambridge North station.  There were mitigating circumstances but I pointed out to National Car Parks that the PCN was invalid as it was issued way in excess of the 28 day deadline for issuing after an alleged offence (12 September/26 November).  Received the following reply from NCP:   Thank you for your appeal received on 6th December 2021 regarding the above detailed Parking Charge Notice.   We have reviewed your case and considered the com