Complete the online a search form online (via the orange button at the top right of the screen).
Eurostar to London
Have you lost something in the Eurostar departure hall or on the train? Please email the Eurostar Lost Property office: lost.property@eurostar.com. Lost property is kept here for 28 days.
Have you lost something at London St. Pancras International station outside the Eurostar area? Please contact the Lost Property office (in English) at customerservice@excess-baggage.com or +44 20 8090 9922. You can also register your items at Lostproperty.org.
The Netherlands: Complete the online search form on NS.nl.
Germany
Arrival in Germany: report to a service employee at the station or at a service desk. Or complete the online search form at Bahn.com.