Q725: If I am issued a parking ticket must it be stuck on my windscreen?
No, the officer issuing the ticket can stick it to any area of the vehicle. Ordinarily officers will attach the ticket to the windscreen because it is most visible in this position. In most cases they will place the ticket under a windscreen wiper in order that it does not blow away, hence the reason it may seem to be a requirement for it to be placed on the windscreen.
Some local areas may have different methods of notification and will not issue a parking ticket in this manner. For example, Officers/Wardens may take a photograph using a digital time stamp and issue the ticket via post. There are also CCTV systems covering parking places which work on the same principle.