Only the person named on the ticket may use it, but don't worry if you've just made a tiny spelling mistake. There's no need to let us know, just turn up and travel as normal.

Yes, the name on your Eurostar ticket must match the name in your passport. Only the person named on the ticket is authorized to use it, and because Eurostar involves international border crossings with full passport control, security is much tighter than on domestic trains. If you have a minor spelling mistake (e.g., "Johnn" instead of "John"), Eurostar staff generally allow you to travel without a change. However, if the ticket belongs to a completely different person, you will be denied boarding. You can change the name on a ticket via the "Manage My Booking" tool on the Eurostar website, but this usually incurs a fee (approx. £42/€50) plus the difference in fare. If your passport is in your maiden name and your ticket is in your married name, you must bring a copy of your marriage certificate to prove your identity at the gate.