NOTHING I SAY ON HERE IS LEGAL ADVICE.
In case you did not know, "London v. Young" was a ruling by the Ontario Court of Appeal that, when a ticket bears a fatal error, if the defendant fails to appear in court on the day of trial, or fails to respond to the ticket, the only option available to the presiding Justice of the Peace is to quash the certificate. If the JP fails to do that, it is to be appealed and then a Justice will quash it. No date should be a fatal error. If you're concerned about the appeal you could also consult a paralegal.
http://www.OntarioTicket.com OR http://www.OHTA.ca