How it works up here, north of Hadrians Wall.

The ticket is simply that. Just the ticket. Its the means to pay a fixed penalty rather than appear personally in Court at a later date.
The NIP, if he was stopped and spoken to by Officers, is verbally administered.
If the ticket is unpaid then a copy complaint will be subsequently issued by the Procurator Fiscal (CPS in England?) and will again offer the ability to pay a fixed penalty. If unpaid, a summons for Court will subsequently be forthcoming.
Have seen where an accused kept their powder dry as regards the incorrect locus being stated on a ticket and the copy complaint for appearance at Court, only revealing the error as a 'defence' in court and at trial.
The Fiscal moved for a brief adjournment and an ammended complaint was served to accused and the case reopened. Found guilty after trial by the Sheriff. (We have them here instead of Magistrates...)
Best hope is that the ticket is bounced by the Police before all this unfolds but, in all honestly, I think I would be asking myself....
Was he speeding or not?

Upto him, ultimately.
