Let’s not Panic!  

When you booked your car park you may have been asked to enter your flight details, this is so that your car park operator can track your arrival / departure times.  If your delay results in extra days, then you can simply log into Manage My Booking and update the details.  Additional charges may apply and if so, these will be charged on the booking or locally at your car park.  In some circumstances the booking will not allow an amendment in such circumstances you can contact the operator directly via the telephone number provided on your booking voucher.