Taken from latest update email:
To receive an official ride time, you must cross the timing points at the start and finish lines. Finisher times will be published on the website from Monday afternoon (22 October).
Different from previous years, this year your timing tag will be attached to the back of your event number plate.
Your number plate will attach with cable ties to the front of your bike and will be your passport into the start area and onto the ferry (if applicable). You must have your number plate attached correctly to your bike to show that you are an official participant.
Your bike plate will be within your registration pack, which you can expect to receive next month.