Two additional arguments:
1) As Incandescent points out the council has been dilatory in issuing the notice to owner, and there is no good reason for the delay.
2) Check the designation of the bay, there's various references to Sutton Lane North in the order and you want to confirm that there's an entry that matches the bay you were parked in, and the bay markings on the road match the wording of the order to the letter. If there is any discrepancy that you can find, that opens a further avenue.