They didn't identify the traveller, so cannot reasonably bring a prosecution.Sorry to piggy back here, but let's say the person in question, got stopped and issued a fine, but offered up a made up name and address. Then received the same email as the this other gentleman here.
Would your advice be the same? Considering the email has the name of the interested party, and a fine was issued which was ignored/tossed away with a fake address and name.